Introduce a special kind of non-durable read that provides only per-key linearizable isolation; i.e. strict-serializable isolation for single partition-key reads.
This read creates only a happens-before edge, by collecting dependencies for execution and ensuring that execution happens strictly after these dependencies
have executed, but at no precise time otherwise. So later writes may be witnessed, and if multiple keys are read they may represents different points in time.
patch by Benedict; reviewed by Ariel Weisberg for CASSANDRA-19305
Refactor CommandsForKey for efficiency, and to support transitive dependency elision
patch by Benedict; reviewed by Aleksey Yeshchenko for CASSANDRA-19310
s fc83325fa9 Fix AccordObjectSizes empty sizes
s 44bce6a08c Fix error handling when there are no column families to repair
s f1459540e5 Fix broken nowInSec deserialization
s 91c1befd1c Fix Mutation serializedSize
s b11467c200 Using simulated clock instead of raw nanoTime
s 6412b35924 Accord repair needs to use sentinel tokens
s d19c01ff01 Enable Accord repair with HappyPathFuzzTest
s 2da87f91b8 Implement abort in AccordRepairJob
s e12877c4fa move barrier to accord spec
Patch by Ariel Weisberg; Reviewed by David Capwell for CASSANDRA-19023
s c4bf1533b4 Add more JVM arg checks to the paxos simulation runner
s 1b650a0636 break circular dependency between FileSystemOwnershipCheck and CassandraRelevantProperties
s e0111748dd fix verify with-rng and interrupts
s f8475f2a18 make SimulatedFailureDetector deterministic
s ee77734bbe Deterministic transformation
s 890f23696a Add mechanism forsimulator to intercept password salting
s 5205b99874 Specify Paxos V2 because it is the only linearizable option
Patch by Ariel Weisberg; Reviewed by David Capwell for CASSANDRA-19008
- Avoid serializing full TxnData instances to Accord state tables
patch by Caleb Rackliffe; reviewed by David Capwell, Benedict Elliot Smith, and Ariel Weisberg for CASSANDRA-18355
Accord compaction purgers see random slices of Accord state during compaction (based on randomly selected compaction inputs).
For at least the `durability` column in the `commands` table the tombstone being created when truncating was deleting the latest value since we can get enough information to truncate without actuall yhaving the latest `durability` value.
To fix we can wait to emit a tombstone until we are erasing the entire command row when truncating or truncating with outcome and meanwhile we can drop the extra columns that are no longer needed instead of using a tombstone. We don't need to emit cell tombstones we can drop them from the purger when processing each row.
patch by Ariel Weisberg; reviewed by David Capwell for CASSANDRA-18795
patch by Benedict Elliott Smith; reviewed by Ariel Weisberg, Aleksey Yeschenko, and David Capwell for CASSANDRA-18883
Co-authored-by: Benedict Elliott Smith <benedict@apache.org>
Co-authored-by: Ariel Weisberg <aweisberg@apple.com>
Co-authored-by: Aleksey Yeschenko <aleksey@apache.org>
Co-authored-by: David Capwell <dcapwell@gmail.com>
Patch by Blake Eggleston and Benedict Elliott Smith; Reviewed by David
Capwell for CASSANDRA-17101
CEP-15: Accord TCM integration
Patch by Blake Eggleston; Reviewed by David Capwell for CASSANDRA-18444
Benedict Elliott Smith