This commit is contained in:
Jonathan Ellis 2013-08-12 15:28:56 -05:00
parent 830507b031
commit 82fc871159
1 changed files with 6 additions and 4 deletions

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@ -18,14 +18,14 @@ using the provided 'sstableupgrade' tool.
Upgrading
---------
- CAS and new features in CQL such as DROP COLUMN assume that cell
timestamps are microseconds-since-epoch. Do not use these
features if you are using client-specified timestamps with some
other source.
- Upgrading is ONLY supported from Cassandra 1.2.9 or later. This
goes for sstable compatibility as well as network. When
upgrading from an earlier release, upgrade to 1.2.9 first and
run upgradesstables before proceeding to 2.0.
- CAS and new features in CQL such as DROP COLUMN assume that cell
timestamps are microseconds-since-epoch. Do not use these
features if you are using client-specified timestamps with some
other source.
- Replication and strategy options do not accept unknown options anymore.
This was already the case for CQL3 in 1.2 but this is now the case for
thrift too.
@ -75,6 +75,8 @@ Operations
Features
--------
- Lightweight transactions
(http://www.datastax.com/dev/blog/lightweight-transactions-in-cassandra-2-0)
- Alias support has been added to CQL3 SELECT statement. Refer to
CQL3 documentation (http://cassandra.apache.org/doc/cql3/CQL.html) for details.
- JEMalloc support (see memory_allocator in cassandra.yaml)