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@ -9,7 +9,22 @@
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# one logical cluster from joining another.
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cluster_name: 'Test Cluster'
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# You should always specify InitialToken when setting up a production
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# This defines the number of tokens randomly assigned to this node on the ring
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# The more tokens, relative to other nodes, the larger the proportion of data
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# that this node will store. You probably want all nodes to have the same number
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# of tokens assuming they have equal hardware capability.
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#
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# If you leave this unspecified, Cassandra will use the default of 1 token for legacy compatibility,
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# and will use the initial_token as described below.
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#
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# Specifying initial_token will override this setting.
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#
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# If you already have a cluster with 1 token per node, and wish to migrate to
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# multiple tokens per node, see http://wiki.apache.org/cassandra/Operations
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# num_tokens: 256
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# If you haven't specified num_tokens, or have set it to the default of 1 then
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# you should always specify InitialToken when setting up a production
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# cluster for the first time, and often when adding capacity later.
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# The principle is that each node should be given an equal slice of
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# the token ring; see http://wiki.apache.org/cassandra/Operations
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@ -21,21 +36,23 @@ cluster_name: 'Test Cluster'
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# a random token, which will lead to hot spots.
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initial_token:
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# Set to true to make new [non-seed] nodes automatically migrate data
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# to themselves from the pre-existing nodes in the cluster. Defaults
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# to false because you can only bootstrap N machines at a time from
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# an existing cluster of N, so if you are bringing up a cluster of
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# 10 machines with 3 seeds you would have to do it in stages. Leaving
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# this off for the initial start simplifies that.
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auto_bootstrap: false
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# See http://wiki.apache.org/cassandra/HintedHandoff
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hinted_handoff_enabled: true
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# this defines the maximum amount of time a dead host will have hints
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# generated. After it has been dead this long, hints will be dropped.
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max_hint_window_in_ms: 3600000 # one hour
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# Sleep this long after delivering each row or row fragment
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hinted_handoff_throttle_delay_in_ms: 50
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# generated. After it has been dead this long, new hints for it will not be
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# created until it has been seen alive and gone down again.
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max_hint_window_in_ms: 10800000 # 3 hours
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# throttle in KB's per second, per delivery thread
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hinted_handoff_throttle_in_kb: 1024
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# Number of threads with which to deliver hints;
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# Consider increasing this number when you have multi-dc deployments, since
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# cross-dc handoff tends to be slower
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max_hints_delivery_threads: 2
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# The following setting populates the page cache on memtable flush and compaction
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# WARNING: Enable this setting only when the whole node's data fits in memory.
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# Defaults to: false
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# populate_io_cache_on_flush: false
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# authentication backend, implementing IAuthenticator; used to identify users
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authenticator: org.apache.cassandra.auth.AllowAllAuthenticator
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@ -46,14 +63,13 @@ authorizer: org.apache.cassandra.auth.AllowAllAuthorizer
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# The partitioner is responsible for distributing rows (by key) across
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# nodes in the cluster. Any IPartitioner may be used, including your
|
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# own as long as it is on the classpath. Out of the box, Cassandra
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# provides org.apache.cassandra.dht.RandomPartitioner
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# org.apache.cassandra.dht.ByteOrderedPartitioner,
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# org.apache.cassandra.dht.OrderPreservingPartitioner (deprecated),
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# and org.apache.cassandra.dht.CollatingOrderPreservingPartitioner
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# (deprecated).
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# provides org.apache.cassandra.dht.{Murmur3Partitioner, RandomPartitioner
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# ByteOrderedPartitioner, OrderPreservingPartitioner (deprecated)}.
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#
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# - RandomPartitioner distributes rows across the cluster evenly by md5.
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# When in doubt, this is the best option.
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# This is the default prior to 1.2 and is retained for compatibility.
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# - Murmur3Partitioner is similar to RandomPartioner but uses Murmur3_128
|
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# Hash Function instead of md5. When in doubt, this is the best option.
|
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# - ByteOrderedPartitioner orders rows lexically by key bytes. BOP allows
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# scanning rows in key order, but the ordering can generate hot spots
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# for sequential insertion workloads.
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@ -65,71 +81,142 @@ authorizer: org.apache.cassandra.auth.AllowAllAuthorizer
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#
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# See http://wiki.apache.org/cassandra/Operations for more on
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|
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# partitioners and token selection.
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partitioner: org.apache.cassandra.dht.RandomPartitioner
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partitioner: org.apache.cassandra.dht.Murmur3Partitioner
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# directories where Cassandra should store data on disk.
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data_file_directories:
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- /var/lib/cassandra/data
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- /tmp/fat-client/data
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# commit log
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commitlog_directory: /var/lib/cassandra/commitlog
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commitlog_directory: /tmp/fat-client/commitlog
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# policy for data disk failures:
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# stop: shut down gossip and Thrift, leaving the node effectively dead, but
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# still inspectable via JMX.
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# best_effort: stop using the failed disk and respond to requests based on
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# remaining available sstables. This means you WILL see obsolete
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|
# data at CL.ONE!
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# ignore: ignore fatal errors and let requests fail, as in pre-1.2 Cassandra
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|
disk_failure_policy: stop
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# Maximum size of the key cache in memory.
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#
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|
# Each key cache hit saves 1 seek and each row cache hit saves 2 seeks at the
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# minimum, sometimes more. The key cache is fairly tiny for the amount of
|
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# time it saves, so it's worthwhile to use it at large numbers.
|
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# The row cache saves even more time, but must store the whole values of
|
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# its rows, so it is extremely space-intensive. It's best to only use the
|
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|
# row cache if you have hot rows or static rows.
|
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#
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# NOTE: if you reduce the size, you may not get you hottest keys loaded on startup.
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#
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# Default value is empty to make it "auto" (min(5% of Heap (in MB), 100MB)). Set to 0 to disable key cache.
|
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|
|
key_cache_size_in_mb:
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|
# Duration in seconds after which Cassandra should
|
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# safe the keys cache. Caches are saved to saved_caches_directory as
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# specified in this configuration file.
|
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|
#
|
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|
|
# Saved caches greatly improve cold-start speeds, and is relatively cheap in
|
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|
# terms of I/O for the key cache. Row cache saving is much more expensive and
|
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# has limited use.
|
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|
#
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|
|
# Default is 14400 or 4 hours.
|
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|
|
key_cache_save_period: 14400
|
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|
|
# Number of keys from the key cache to save
|
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|
|
# Disabled by default, meaning all keys are going to be saved
|
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|
|
# key_cache_keys_to_save: 100
|
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|
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|
|
# Maximum size of the row cache in memory.
|
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|
|
|
# NOTE: if you reduce the size, you may not get you hottest keys loaded on startup.
|
|
|
|
|
#
|
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|
|
# Default value is 0, to disable row caching.
|
|
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|
|
row_cache_size_in_mb: 0
|
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|
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|
|
# Duration in seconds after which Cassandra should
|
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|
|
# safe the row cache. Caches are saved to saved_caches_directory as specified
|
|
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|
|
# in this configuration file.
|
|
|
|
|
#
|
|
|
|
|
# Saved caches greatly improve cold-start speeds, and is relatively cheap in
|
|
|
|
|
# terms of I/O for the key cache. Row cache saving is much more expensive and
|
|
|
|
|
# has limited use.
|
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|
|
|
#
|
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|
|
# Default is 0 to disable saving the row cache.
|
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|
|
row_cache_save_period: 0
|
|
|
|
|
|
|
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|
|
# Number of keys from the row cache to save
|
|
|
|
|
# Disabled by default, meaning all keys are going to be saved
|
|
|
|
|
# row_cache_keys_to_save: 100
|
|
|
|
|
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|
|
# The provider for the row cache to use.
|
|
|
|
|
#
|
|
|
|
|
# Supported values are: ConcurrentLinkedHashCacheProvider, SerializingCacheProvider
|
|
|
|
|
#
|
|
|
|
|
# SerializingCacheProvider serialises the contents of the row and stores
|
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|
|
|
# it in native memory, i.e., off the JVM Heap. Serialized rows take
|
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|
|
|
# significantly less memory than "live" rows in the JVM, so you can cache
|
|
|
|
|
# more rows in a given memory footprint. And storing the cache off-heap
|
|
|
|
|
# means you can use smaller heap sizes, reducing the impact of GC pauses.
|
|
|
|
|
#
|
|
|
|
|
# It is also valid to specify the fully-qualified class name to a class
|
|
|
|
|
# that implements org.apache.cassandra.cache.IRowCacheProvider.
|
|
|
|
|
#
|
|
|
|
|
# Defaults to SerializingCacheProvider
|
|
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|
|
row_cache_provider: SerializingCacheProvider
|
|
|
|
|
|
|
|
|
|
# The pluggable Memory allocation for Off heap row cache, Experiments show that JEMAlloc
|
|
|
|
|
# saves some memory than the native GCC allocator.
|
|
|
|
|
#
|
|
|
|
|
# Supported values are: NativeAllocator, JEMallocAllocator
|
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|
|
|
#
|
|
|
|
|
# If you intend to use JEMallocAllocator you have to install JEMalloc as library and
|
|
|
|
|
# modify cassandra-env.sh as directed in the file.
|
|
|
|
|
#
|
|
|
|
|
# Defaults to NativeAllocator
|
|
|
|
|
# memory_allocator: NativeAllocator
|
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|
|
|
|
|
|
|
|
# saved caches
|
|
|
|
|
saved_caches_directory: /var/lib/cassandra/saved_caches
|
|
|
|
|
saved_caches_directory: /tmp/fat-client/saved_caches
|
|
|
|
|
|
|
|
|
|
# commitlog_sync may be either "periodic" or "batch."
|
|
|
|
|
# When in batch mode, Cassandra won't ack writes until the commit log
|
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|
|
|
# has been fsynced to disk. It will wait up to
|
|
|
|
|
# CommitLogSyncBatchWindowInMS milliseconds for other writes, before
|
|
|
|
|
# commitlog_sync_batch_window_in_ms milliseconds for other writes, before
|
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|
|
# performing the sync.
|
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|
|
commitlog_sync: periodic
|
|
|
|
|
|
|
|
|
|
# the other option is "timed," where writes may be acked immediately
|
|
|
|
|
#
|
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|
|
|
# commitlog_sync: batch
|
|
|
|
|
# commitlog_sync_batch_window_in_ms: 50
|
|
|
|
|
#
|
|
|
|
|
# the other option is "periodic" where writes may be acked immediately
|
|
|
|
|
# and the CommitLog is simply synced every commitlog_sync_period_in_ms
|
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|
|
# milliseconds.
|
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|
|
|
commitlog_sync: periodic
|
|
|
|
|
commitlog_sync_period_in_ms: 10000
|
|
|
|
|
|
|
|
|
|
# emergency pressure valve: each time heap usage after a full (CMS)
|
|
|
|
|
# garbage collection is above this fraction of the max, Cassandra will
|
|
|
|
|
# flush the largest memtables.
|
|
|
|
|
# The size of the individual commitlog file segments. A commitlog
|
|
|
|
|
# segment may be archived, deleted, or recycled once all the data
|
|
|
|
|
# in it (potentally from each columnfamily in the system) has been
|
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|
|
# flushed to sstables.
|
|
|
|
|
#
|
|
|
|
|
# Set to 1.0 to disable. Setting this lower than
|
|
|
|
|
# CMSInitiatingOccupancyFraction is not likely to be useful.
|
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|
|
|
#
|
|
|
|
|
# RELYING ON THIS AS YOUR PRIMARY TUNING MECHANISM WILL WORK POORLY:
|
|
|
|
|
# it is most effective under light to moderate load, or read-heavy
|
|
|
|
|
# workloads; under truly massive write load, it will often be too
|
|
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|
|
# little, too late.
|
|
|
|
|
flush_largest_memtables_at: 0.75
|
|
|
|
|
# The default size is 32, which is almost always fine, but if you are
|
|
|
|
|
# archiving commitlog segments (see commitlog_archiving.properties),
|
|
|
|
|
# then you probably want a finer granularity of archiving; 8 or 16 MB
|
|
|
|
|
# is reasonable.
|
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|
|
|
commitlog_segment_size_in_mb: 32
|
|
|
|
|
|
|
|
|
|
# emergency pressure valve #2: the first time heap usage after a full
|
|
|
|
|
# (CMS) garbage collection is above this fraction of the max,
|
|
|
|
|
# Cassandra will reduce cache maximum _capacity_ to the given fraction
|
|
|
|
|
# of the current _size_. Should usually be set substantially above
|
|
|
|
|
# flush_largest_memtables_at, since that will have less long-term
|
|
|
|
|
# impact on the system.
|
|
|
|
|
#
|
|
|
|
|
# Set to 1.0 to disable. Setting this lower than
|
|
|
|
|
# CMSInitiatingOccupancyFraction is not likely to be useful.
|
|
|
|
|
reduce_cache_sizes_at: 0.85
|
|
|
|
|
reduce_cache_capacity_to: 0.6
|
|
|
|
|
|
|
|
|
|
# Addresses of hosts that are deemed contact points.
|
|
|
|
|
# Cassandra nodes use this list of hosts to find each other and learn
|
|
|
|
|
# the topology of the ring. You must change this if you are running
|
|
|
|
|
# multiple nodes!
|
|
|
|
|
seeds:
|
|
|
|
|
- 127.0.0.1
|
|
|
|
|
|
|
|
|
|
# Access mode. mmapped i/o is substantially faster, but only practical on
|
|
|
|
|
# a 64bit machine (which notably does not include EC2 "small" instances)
|
|
|
|
|
# or relatively small datasets. "auto", the safe choice, will enable
|
|
|
|
|
# mmapping on a 64bit JVM. Other values are "mmap", "mmap_index_only"
|
|
|
|
|
# (which may allow you to get part of the benefits of mmap on a 32bit
|
|
|
|
|
# machine by mmapping only index files) and "standard".
|
|
|
|
|
# (The buffer size settings that follow only apply to standard,
|
|
|
|
|
# non-mmapped i/o.)
|
|
|
|
|
disk_access_mode: auto
|
|
|
|
|
# any class that implements the SeedProvider interface and has a
|
|
|
|
|
# constructor that takes a Map<String, String> of parameters will do.
|
|
|
|
|
seed_provider:
|
|
|
|
|
# Addresses of hosts that are deemed contact points.
|
|
|
|
|
# Cassandra nodes use this list of hosts to find each other and learn
|
|
|
|
|
# the topology of the ring. You must change this if you are running
|
|
|
|
|
# multiple nodes!
|
|
|
|
|
- class_name: org.apache.cassandra.locator.SimpleSeedProvider
|
|
|
|
|
parameters:
|
|
|
|
|
# seeds is actually a comma-delimited list of addresses.
|
|
|
|
|
# Ex: "<ip1>,<ip2>,<ip3>"
|
|
|
|
|
- seeds: "127.0.0.1"
|
|
|
|
|
|
|
|
|
|
# For workloads with more data than can fit in memory, Cassandra's
|
|
|
|
|
# bottleneck will be reads that need to fetch data from
|
|
|
|
|
@ -143,6 +230,21 @@ disk_access_mode: auto
|
|
|
|
|
concurrent_reads: 32
|
|
|
|
|
concurrent_writes: 32
|
|
|
|
|
|
|
|
|
|
# Total memory to use for memtables. Cassandra will flush the largest
|
|
|
|
|
# memtable when this much memory is used.
|
|
|
|
|
# If omitted, Cassandra will set it to 1/3 of the heap.
|
|
|
|
|
# memtable_total_space_in_mb: 2048
|
|
|
|
|
|
|
|
|
|
# Total space to use for commitlogs. Since commitlog segments are
|
|
|
|
|
# mmapped, and hence use up address space, the default size is 32
|
|
|
|
|
# on 32-bit JVMs, and 1024 on 64-bit JVMs.
|
|
|
|
|
#
|
|
|
|
|
# If space gets above this value (it will round up to the next nearest
|
|
|
|
|
# segment multiple), Cassandra will flush every dirty CF in the oldest
|
|
|
|
|
# segment and remove it. So a small total commitlog space will tend
|
|
|
|
|
# to cause more flush activity on less-active columnfamilies.
|
|
|
|
|
# commitlog_total_space_in_mb: 4096
|
|
|
|
|
|
|
|
|
|
# This sets the amount of memtable flush writer threads. These will
|
|
|
|
|
# be blocked by disk io, and each one will hold a memtable in memory
|
|
|
|
|
# while blocked. If you have a large heap and many data directories,
|
|
|
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@ -150,9 +252,26 @@ concurrent_writes: 32
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# By default this will be set to the amount of data directories defined.
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#memtable_flush_writers: 1
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# the number of full memtables to allow pending flush, that is,
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# waiting for a writer thread. At a minimum, this should be set to
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# the maximum number of secondary indexes created on a single CF.
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memtable_flush_queue_size: 4
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# Whether to, when doing sequential writing, fsync() at intervals in
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# order to force the operating system to flush the dirty
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# buffers. Enable this to avoid sudden dirty buffer flushing from
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# impacting read latencies. Almost always a good idea on SSD:s; not
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# necessarily on platters.
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trickle_fsync: false
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trickle_fsync_interval_in_kb: 10240
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# TCP port, for commands and data
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storage_port: 7000
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# SSL port, for encrypted communication. Unused unless enabled in
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# encryption_options
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ssl_storage_port: 7001
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# Address to bind to and tell other Cassandra nodes to connect to. You
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# _must_ change this if you want multiple nodes to be able to
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# communicate!
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@ -165,45 +284,106 @@ storage_port: 7000
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# Setting this to 0.0.0.0 is always wrong.
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listen_address: 127.0.0.2
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# Address to broadcast to other Cassandra nodes
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# Leaving this blank will set it to the same value as listen_address
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# broadcast_address: 1.2.3.4
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# Whether to start the native transport server.
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# Currently, only the thrift server is started by default because the native
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# transport is considered beta.
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# Please note that the address on which the native transport is bound is the
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# same as the rpc_address. The port however is different and specified below.
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start_native_transport: false
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# port for the CQL native transport to listen for clients on
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native_transport_port: 9042
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# The minimum and maximum threads for handling requests when the native
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# transport is used. The meaning is those is similar to the one of
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# rpc_min_threads and rpc_max_threads, though the default differ slightly and
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# are the ones below:
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# native_transport_min_threads: 16
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# native_transport_max_threads: 128
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# Whether to start the thrift rpc server.
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start_rpc: false
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# The address to bind the Thrift RPC service to -- clients connect
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# here. Unlike ListenAddress above, you *can* specify 0.0.0.0 here if
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# you want Thrift to listen on all interfaces.
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#
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# Leaving this blank has the same effect it does for ListenAddress,
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# (i.e. it will be based on the configured hostname of the node).
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rpc_address: 127.0.0.2
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rpc_address: localhost
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# port for Thrift to listen for clients on
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rpc_port: 9160
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# enable or disable keepalive on rpc connections
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rpc_keepalive: true
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# Cassandra provides three out-of-the-box options for the RPC Server:
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#
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# sync -> One thread per thrift connection. For a very large number of clients, memory
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# will be your limiting factor. On a 64 bit JVM, 128KB is the minimum stack size
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# per thread, and that will correspond to your use of virtual memory (but physical memory
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# may be limited depending on use of stack space).
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#
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# hsha -> Stands for "half synchronous, half asynchronous." All thrift clients are handled
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# asynchronously using a small number of threads that does not vary with the amount
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# of thrift clients (and thus scales well to many clients). The rpc requests are still
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# synchronous (one thread per active request).
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#
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# The default is sync because on Windows hsha is about 30% slower. On Linux,
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# sync/hsha performance is about the same, with hsha of course using less memory.
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#
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# Alternatively, can provide your own RPC server by providing the fully-qualified class name
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# of an o.a.c.t.TServerFactory that can create an instance of it.
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rpc_server_type: sync
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# Uncomment rpc_min|max_thread to set request pool size limits.
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#
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# Regardless of your choice of RPC server (see above), the number of maximum requests in the
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# RPC thread pool dictates how many concurrent requests are possible (but if you are using the sync
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# RPC server, it also dictates the number of clients that can be connected at all).
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#
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# The default is unlimited and thus provide no protection against clients overwhelming the server. You are
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# encouraged to set a maximum that makes sense for you in production, but do keep in mind that
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# rpc_max_threads represents the maximum number of client requests this server may execute concurrently.
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#
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# rpc_min_threads: 16
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# rpc_max_threads: 2048
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# uncomment to set socket buffer sizes on rpc connections
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# rpc_send_buff_size_in_bytes:
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# rpc_recv_buff_size_in_bytes:
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# uncomment to set socket buffer size for internode communication
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# internode_send_buff_size_in_bytes:
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# internode_recv_buff_size_in_bytes:
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# Frame size for thrift (maximum field length).
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# 0 disables TFramedTransport in favor of TSocket. This option
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# is deprecated; we strongly recommend using Framed mode.
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thrift_framed_transport_size_in_mb: 15
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# The max length of a thrift message, including all fields and
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# internal thrift overhead.
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thrift_max_message_length_in_mb: 16
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# Set to true to have Cassandra create a hard link to each sstable
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# flushed or streamed locally in a backups/ subdirectory of the
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# Keyspace data. Removing these links is the operator's
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# responsibility.
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incremental_backups: false
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# Whether or not to take a snapshot before each compaction. Be
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# careful using this option, since Cassandra won't clean up the
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# snapshots for you. Mostly useful if you're paranoid when there
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# is a data format change.
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snapshot_before_compaction: false
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# change this to increase the compaction thread's priority. In java, 1 is the
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# lowest priority and that is our default.
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# compaction_thread_priority: 1
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# The threshold size in megabytes the binary memtable must grow to,
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# before it's submitted for flushing to disk.
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binary_memtable_throughput_in_mb: 256
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# Whether or not a snapshot is taken of the data before keyspace truncation
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# or dropping of column families. The STRONGLY advised default of true
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# should be used to provide data safety. If you set this flag to false, you will
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# lose data on truncation or drop.
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auto_snapshot: true
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# Add column indexes to a row after its contents reach this size.
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# Increase if your column values are large, or if you have a very large
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@ -219,39 +399,129 @@ column_index_size_in_kb: 64
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# will be logged specifying the row key.
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in_memory_compaction_limit_in_mb: 64
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# Number of simultaneous compactions to allow, NOT including
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# validation "compactions" for anti-entropy repair. Simultaneous
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# compactions can help preserve read performance in a mixed read/write
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# workload, by mitigating the tendency of small sstables to accumulate
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# during a single long running compactions. The default is usually
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# fine and if you experience problems with compaction running too
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# slowly or too fast, you should look at
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# compaction_throughput_mb_per_sec first.
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#
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# concurrent_compactors defaults to the number of cores.
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# Uncomment to make compaction mono-threaded, the pre-0.8 default.
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#concurrent_compactors: 1
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# Multi-threaded compaction. When enabled, each compaction will use
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# up to one thread per core, plus one thread per sstable being merged.
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# This is usually only useful for SSD-based hardware: otherwise,
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# your concern is usually to get compaction to do LESS i/o (see:
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# compaction_throughput_mb_per_sec), not more.
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multithreaded_compaction: false
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# Throttles compaction to the given total throughput across the entire
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# system. The faster you insert data, the faster you need to compact in
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# order to keep the sstable count down, but in general, setting this to
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# 16 to 32 times the rate you are inserting data is more than sufficient.
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# Setting this to 0 disables throttling. Note that this account for all types
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# of compaction, including validation compaction.
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compaction_throughput_mb_per_sec: 16
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# Track cached row keys during compaction, and re-cache their new
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# positions in the compacted sstable. Disable if you use really large
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# key caches.
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compaction_preheat_key_cache: true
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# Time to wait for a reply from other nodes before failing the command
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rpc_timeout_in_ms: 10000
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# Throttles all outbound streaming file transfers on this node to the
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# given total throughput in Mbps. This is necessary because Cassandra does
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# mostly sequential IO when streaming data during bootstrap or repair, which
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# can lead to saturating the network connection and degrading rpc performance.
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# When unset, the default is 400 Mbps or 50 MB/s.
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# stream_throughput_outbound_megabits_per_sec: 400
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# How long the coordinator should wait for read operations to complete
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read_request_timeout_in_ms: 10000
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# How long the coordinator should wait for seq or index scans to complete
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range_request_timeout_in_ms: 10000
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# How long the coordinator should wait for writes to complete
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write_request_timeout_in_ms: 10000
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# How long the coordinator should wait for truncates to complete
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# (This can be much longer, because unless auto_snapshot is disabled
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# we need to flush first so we can snapshot before removing the data.)
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truncate_request_timeout_in_ms: 60000
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# The default timeout for other, miscellaneous operations
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request_timeout_in_ms: 10000
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# Enable operation timeout information exchange between nodes to accurately
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# measure request timeouts, If disabled cassandra will assuming the request
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# was forwarded to the replica instantly by the coordinator
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#
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# Warning: before enabling this property make sure to ntp is installed
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# and the times are synchronized between the nodes.
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cross_node_timeout: false
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# Enable socket timeout for streaming operation.
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# When a timeout occurs during streaming, streaming is retried from the start
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# of the current file. This *can* involve re-streaming an important amount of
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# data, so you should avoid setting the value too low.
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# Default value is 0, which never timeout streams.
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# streaming_socket_timeout_in_ms: 0
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# phi value that must be reached for a host to be marked down.
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# most users should never need to adjust this.
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# phi_convict_threshold: 8
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# endpoint_snitch -- Set this to a class that implements
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# IEndpointSnitch, which will let Cassandra know enough
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# about your network topology to route requests efficiently.
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# IEndpointSnitch. The snitch has two functions:
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# - it teaches Cassandra enough about your network topology to route
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# requests efficiently
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# - it allows Cassandra to spread replicas around your cluster to avoid
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# correlated failures. It does this by grouping machines into
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# "datacenters" and "racks." Cassandra will do its best not to have
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# more than one replica on the same "rack" (which may not actually
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# be a physical location)
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#
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# IF YOU CHANGE THE SNITCH AFTER DATA IS INSERTED INTO THE CLUSTER,
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# YOU MUST RUN A FULL REPAIR, SINCE THE SNITCH AFFECTS WHERE REPLICAS
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# ARE PLACED.
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#
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# Out of the box, Cassandra provides
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# - org.apache.cassandra.locator.SimpleSnitch:
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# - SimpleSnitch:
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# Treats Strategy order as proximity. This improves cache locality
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# when disabling read repair, which can further improve throughput.
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# - org.apache.cassandra.locator.RackInferringSnitch:
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# Only appropriate for single-datacenter deployments.
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# - PropertyFileSnitch:
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# Proximity is determined by rack and data center, which are
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# explicitly configured in cassandra-topology.properties.
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# - GossipingPropertyFileSnitch
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# The rack and datacenter for the local node are defined in
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# cassandra-rackdc.properties and propagated to other nodes via gossip. If
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# cassandra-topology.properties exists, it is used as a fallback, allowing
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# migration from the PropertyFileSnitch.
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# - RackInferringSnitch:
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# Proximity is determined by rack and data center, which are
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# assumed to correspond to the 3rd and 2nd octet of each node's
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# IP address, respectively
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# org.apache.cassandra.locator.PropertyFileSnitch:
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# - Proximity is determined by rack and data center, which are
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# explicitly configured in cassandra-topology.properties.
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endpoint_snitch: org.apache.cassandra.locator.SimpleSnitch
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# IP address, respectively. Unless this happens to match your
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# deployment conventions (as it did Facebook's), this is best used
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# as an example of writing a custom Snitch class.
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# - Ec2Snitch:
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# Appropriate for EC2 deployments in a single Region. Loads Region
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# and Availability Zone information from the EC2 API. The Region is
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# treated as the Datacenter, and the Availability Zone as the rack.
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# Only private IPs are used, so this will not work across multiple
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# Regions.
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# - Ec2MultiRegionSnitch:
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# Uses public IPs as broadcast_address to allow cross-region
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# connectivity. (Thus, you should set seed addresses to the public
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# IP as well.) You will need to open the storage_port or
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# ssl_storage_port on the public IP firewall. (For intra-Region
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# traffic, Cassandra will switch to the private IP after
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# establishing a connection.)
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#
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# You can use a custom Snitch by setting this to the full class name
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# of the snitch, which will be assumed to be on your classpath.
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endpoint_snitch: SimpleSnitch
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# dynamic_snitch -- This boolean controls whether the above snitch is
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# wrapped with a dynamic snitch, which will monitor read latencies
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# and avoid reading from hosts that have slowed (due to compaction,
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# for instance)
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dynamic_snitch: true
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# controls how often to perform the more expensive part of host score
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|
|
# calculation
|
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|
|
dynamic_snitch_update_interval_in_ms: 100
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|
|
@ -265,7 +535,7 @@ dynamic_snitch_reset_interval_in_ms: 600000
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|
|
# expressed as a double which represents a percentage. Thus, a value of
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# 0.2 means Cassandra would continue to prefer the static snitch values
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# until the pinned host was 20% worse than the fastest.
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dynamic_snitch_badness_threshold: 0.0
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dynamic_snitch_badness_threshold: 0.1
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# request_scheduler -- Set this to a class that implements
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# RequestScheduler, which will schedule incoming client requests
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@ -307,183 +577,54 @@ request_scheduler: org.apache.cassandra.scheduler.NoScheduler
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# the request scheduling. Currently the only valid option is keyspace.
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# request_scheduler_id: keyspace
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# The Index Interval determines how large the sampling of row keys
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# is for a given SSTable. The larger the sampling, the more effective
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# the index is at the cost of space.
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index_interval: 128
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# Keyspaces have ColumnFamilies. (Usually 1 KS per application.)
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# ColumnFamilies have Rows. (Dozens of CFs per KS.)
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# Rows contain Columns. (Many per CF.)
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# Columns contain name:value:timestamp. (Many per Row.)
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# Enable or disable inter-node encryption
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# Default settings are TLS v1, RSA 1024-bit keys (it is imperative that
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# users generate their own keys) TLS_RSA_WITH_AES_128_CBC_SHA as the cipher
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# suite for authentication, key exchange and encryption of the actual data transfers.
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# NOTE: No custom encryption options are enabled at the moment
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# The available internode options are : all, none, dc, rack
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#
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# A KS is most similar to a schema, and a CF is most similar to a relational table.
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# If set to dc cassandra will encrypt the traffic between the DCs
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# If set to rack cassandra will encrypt the traffic between the racks
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#
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# Keyspaces, ColumnFamilies, and Columns may carry additional
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# metadata that change their behavior. These are as follows:
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# The passwords used in these options must match the passwords used when generating
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# the keystore and truststore. For instructions on generating these files, see:
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# http://download.oracle.com/javase/6/docs/technotes/guides/security/jsse/JSSERefGuide.html#CreateKeystore
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#
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# Keyspace required parameters:
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# - name: name of the keyspace; "system" is
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# reserved for Cassandra Internals.
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# - replica_placement_strategy: the class that determines how replicas
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# are distributed among nodes. Contains both the class as well as
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|
# configuration information. Must extend AbstractReplicationStrategy.
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|
|
# Out of the box, Cassandra provides
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|
# * org.apache.cassandra.locator.SimpleStrategy
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|
|
# * org.apache.cassandra.locator.NetworkTopologyStrategy
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|
|
# * org.apache.cassandra.locator.OldNetworkTopologyStrategy
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|
|
#
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|
|
# SimpleStrategy merely places the first
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|
|
# replica at the node whose token is closest to the key (as determined
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# by the Partitioner), and additional replicas on subsequent nodes
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# along the ring in increasing Token order.
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|
|
#
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|
|
# With NetworkTopologyStrategy,
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|
|
# for each datacenter, you can specify how many replicas you want
|
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|
|
# on a per-keyspace basis. Replicas are placed on different racks
|
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|
# within each DC, if possible. This strategy also requires rack aware
|
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|
|
# snitch, such as RackInferringSnitch or PropertyFileSnitch.
|
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|
|
# An example:
|
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|
|
# - name: Keyspace1
|
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|
|
# replica_placement_strategy: org.apache.cassandra.locator.NetworkTopologyStrategy
|
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|
|
# strategy_options:
|
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|
|
# DC1 : 3
|
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|
|
# DC2 : 2
|
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|
|
# DC3 : 1
|
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|
|
#
|
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|
|
# OldNetworkToplogyStrategy [formerly RackAwareStrategy]
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|
|
# places one replica in each of two datacenters, and the third on a
|
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|
|
# different rack in in the first. Additional datacenters are not
|
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|
|
# guaranteed to get a replica. Additional replicas after three are placed
|
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|
|
# in ring order after the third without regard to rack or datacenter.
|
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|
|
|
# - replication_factor: Number of replicas of each row
|
|
|
|
|
# Keyspace optional paramaters:
|
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|
|
# - strategy_options: Additional information for the replication strategy.
|
|
|
|
|
# - column_families:
|
|
|
|
|
# ColumnFamily required parameters:
|
|
|
|
|
# - name: name of the ColumnFamily. Must not contain the character "-".
|
|
|
|
|
# - compare_with: tells Cassandra how to sort the columns for slicing
|
|
|
|
|
# operations. The default is BytesType, which is a straightforward
|
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|
|
# lexical comparison of the bytes in each column. Other options are
|
|
|
|
|
# AsciiType, UTF8Type, LexicalUUIDType, TimeUUIDType, LongType,
|
|
|
|
|
# and IntegerType (a generic variable-length integer type).
|
|
|
|
|
# You can also specify the fully-qualified class name to a class of
|
|
|
|
|
# your choice extending org.apache.cassandra.db.marshal.AbstractType.
|
|
|
|
|
#
|
|
|
|
|
# ColumnFamily optional parameters:
|
|
|
|
|
# - keys_cached: specifies the number of keys per sstable whose
|
|
|
|
|
# locations we keep in memory in "mostly LRU" order. (JUST the key
|
|
|
|
|
# locations, NOT any column values.) Specify a fraction (value less
|
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|
|
# than 1) or an absolute number of keys to cache. Defaults to 200000
|
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|
|
|
# keys.
|
|
|
|
|
# - rows_cached: specifies the number of rows whose entire contents we
|
|
|
|
|
# cache in memory. Do not use this on ColumnFamilies with large rows,
|
|
|
|
|
# or ColumnFamilies with high write:read ratios. Specify a fraction
|
|
|
|
|
# (value less than 1) or an absolute number of rows to cache.
|
|
|
|
|
# Defaults to 0. (i.e. row caching is off by default)
|
|
|
|
|
# - comment: used to attach additional human-readable information about
|
|
|
|
|
# the column family to its definition.
|
|
|
|
|
# - read_repair_chance: specifies the probability with which read
|
|
|
|
|
# repairs should be invoked on non-quorum reads. must be between 0
|
|
|
|
|
# and 1. defaults to 1.0 (always read repair).
|
|
|
|
|
# - gc_grace_seconds: specifies the time to wait before garbage
|
|
|
|
|
# collecting tombstones (deletion markers). defaults to 864000 (10
|
|
|
|
|
# days). See http://wiki.apache.org/cassandra/DistributedDeletes
|
|
|
|
|
# - default_validation_class: specifies a validator class to use for
|
|
|
|
|
# validating all the column values in the CF.
|
|
|
|
|
# - populate_io_cache_on_flush: populates the page cache on memtable flush
|
|
|
|
|
# and compaction. Defaults to false.
|
|
|
|
|
# NOTE:
|
|
|
|
|
# min_ must be less than max_compaction_threshold!
|
|
|
|
|
# - min_compaction_threshold: the minimum number of SSTables needed
|
|
|
|
|
# to start a minor compaction. increasing this will cause minor
|
|
|
|
|
# compactions to start less frequently and be more intensive. setting
|
|
|
|
|
# this to 0 disables minor compactions. defaults to 4.
|
|
|
|
|
# - max_compaction_threshold: the maximum number of SSTables allowed
|
|
|
|
|
# before a minor compaction is forced. decreasing this will cause
|
|
|
|
|
# minor compactions to start more frequently and be less intensive.
|
|
|
|
|
# setting this to 0 disables minor compactions. defaults to 32.
|
|
|
|
|
# /NOTE
|
|
|
|
|
# - row_cache_save_period_in_seconds: number of seconds between saving
|
|
|
|
|
# row caches. The row caches can be saved periodically and if one
|
|
|
|
|
# exists on startup it will be loaded.
|
|
|
|
|
# - key_cache_save_period_in_seconds: number of seconds between saving
|
|
|
|
|
# key caches. The key caches can be saved periodically and if one
|
|
|
|
|
# exists on startup it will be loaded.
|
|
|
|
|
# - memtable_flush_after_mins: The maximum time to leave a dirty table
|
|
|
|
|
# unflushed. This should be large enough that it won't cause a flush
|
|
|
|
|
# storm of all memtables during periods of inactivity.
|
|
|
|
|
# - memtable_throughput_in_mb: The maximum size of the memtable before
|
|
|
|
|
# it is flushed. If undefined, 1/8 * heapsize will be used.
|
|
|
|
|
# - memtable_operations_in_millions: Number of operations in millions
|
|
|
|
|
# before the memtable is flushed. If undefined, throughput / 64 * 0.3
|
|
|
|
|
# will be used.
|
|
|
|
|
# - column_metadata:
|
|
|
|
|
# Column required parameters:
|
|
|
|
|
# - name: binds a validator (and optionally an indexer) to columns
|
|
|
|
|
# with this name in any row of the enclosing column family.
|
|
|
|
|
# - validator: like cf.compare_with, an AbstractType that checks
|
|
|
|
|
# that the value of the column is well-defined.
|
|
|
|
|
# Column optional parameters:
|
|
|
|
|
# NOTE:
|
|
|
|
|
# index_name cannot be set if index_type is not also set!
|
|
|
|
|
# - index_name: User-friendly name for the index.
|
|
|
|
|
# - index_type: The type of index to be created. Currently only
|
|
|
|
|
# KEYS is supported.
|
|
|
|
|
# /NOTE
|
|
|
|
|
#
|
|
|
|
|
# NOTE:
|
|
|
|
|
# this keyspace definition is for demonstration purposes only.
|
|
|
|
|
# Cassandra will not load these definitions during startup. See
|
|
|
|
|
# http://wiki.apache.org/cassandra/FAQ#no_keyspaces for an explanation.
|
|
|
|
|
# /NOTE
|
|
|
|
|
keyspaces:
|
|
|
|
|
- name: Keyspace1
|
|
|
|
|
replica_placement_strategy: org.apache.cassandra.locator.SimpleStrategy
|
|
|
|
|
replication_factor: 1
|
|
|
|
|
column_families:
|
|
|
|
|
- name: Standard1
|
|
|
|
|
compare_with: BytesType
|
|
|
|
|
keys_cached: 10000
|
|
|
|
|
rows_cached: 1000
|
|
|
|
|
row_cache_save_period_in_seconds: 0
|
|
|
|
|
key_cache_save_period_in_seconds: 3600
|
|
|
|
|
memtable_flush_after_mins: 59
|
|
|
|
|
memtable_throughput_in_mb: 255
|
|
|
|
|
memtable_operations_in_millions: 0.29
|
|
|
|
|
server_encryption_options:
|
|
|
|
|
internode_encryption: none
|
|
|
|
|
keystore: conf/.keystore
|
|
|
|
|
keystore_password: cassandra
|
|
|
|
|
truststore: conf/.truststore
|
|
|
|
|
truststore_password: cassandra
|
|
|
|
|
# More advanced defaults below:
|
|
|
|
|
# protocol: TLS
|
|
|
|
|
# algorithm: SunX509
|
|
|
|
|
# store_type: JKS
|
|
|
|
|
# cipher_suites: [TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA]
|
|
|
|
|
# require_client_auth: false
|
|
|
|
|
|
|
|
|
|
- name: Standard2
|
|
|
|
|
compare_with: UTF8Type
|
|
|
|
|
read_repair_chance: 0.1
|
|
|
|
|
keys_cached: 100
|
|
|
|
|
gc_grace_seconds: 0
|
|
|
|
|
min_compaction_threshold: 5
|
|
|
|
|
max_compaction_threshold: 31
|
|
|
|
|
# enable or disable client/server encryption.
|
|
|
|
|
client_encryption_options:
|
|
|
|
|
enabled: false
|
|
|
|
|
keystore: conf/.keystore
|
|
|
|
|
keystore_password: cassandra
|
|
|
|
|
# More advanced defaults below:
|
|
|
|
|
# protocol: TLS
|
|
|
|
|
# algorithm: SunX509
|
|
|
|
|
# store_type: JKS
|
|
|
|
|
# cipher_suites: [TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA]
|
|
|
|
|
# require_client_auth: false
|
|
|
|
|
|
|
|
|
|
- name: StandardByUUID1
|
|
|
|
|
compare_with: TimeUUIDType
|
|
|
|
|
# internode_compression controls whether traffic between nodes is
|
|
|
|
|
# compressed.
|
|
|
|
|
# can be: all - all traffic is compressed
|
|
|
|
|
# dc - traffic between different datacenters is compressed
|
|
|
|
|
# none - nothing is compressed.
|
|
|
|
|
internode_compression: all
|
|
|
|
|
|
|
|
|
|
- name: Super1
|
|
|
|
|
column_type: Super
|
|
|
|
|
compare_with: BytesType
|
|
|
|
|
compare_subcolumns_with: BytesType
|
|
|
|
|
|
|
|
|
|
- name: Super2
|
|
|
|
|
column_type: Super
|
|
|
|
|
compare_subcolumns_with: UTF8Type
|
|
|
|
|
rows_cached: 10000
|
|
|
|
|
keys_cached: 50
|
|
|
|
|
comment: 'A column family with supercolumns, whose column and subcolumn names are UTF8 strings'
|
|
|
|
|
|
|
|
|
|
- name: Super3
|
|
|
|
|
column_type: Super
|
|
|
|
|
compare_with: LongType
|
|
|
|
|
comment: 'A column family with supercolumns, whose column names are Longs (8 bytes)'
|
|
|
|
|
|
|
|
|
|
- name: Indexed1
|
|
|
|
|
default_validation_class: LongType
|
|
|
|
|
column_metadata:
|
|
|
|
|
- name: birthdate
|
|
|
|
|
validator_class: LongType
|
|
|
|
|
index_name: birthdate_idx
|
|
|
|
|
index_type: KEYS
|
|
|
|
|
# Enable or disable tcp_nodelay for inter-dc communication.
|
|
|
|
|
# Disabling it will result in larger (but fewer) network packets being sent,
|
|
|
|
|
# reducing overhead from the TCP protocol itself, at the cost of increasing
|
|
|
|
|
# latency if you block for cross-datacenter responses.
|
|
|
|
|
inter_dc_tcp_nodelay: false
|
|
|
|
|
|
Brandon Williams