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https://issues.apache.org/jira/browse/CASSANDRA-10579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14976810#comment-14976810
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Benedict commented on CASSANDRA-10579:
--------------------------------------
I based the patch on 2.1.10, so you should be good to roll out the {{-fix}}
patch across your cluster, as it has no other changes. If you'd prefer to wait
until formal review occurs, it will be exactly the same as deploying 2.1.11
(when it materializes). However the patch will only be made officially
available in 2.1.11, as we do not re-release.
Taking another look, it seems that without assertions the possibility for
undefined behaviour (potentially resulting in corruption) is quite high, as
negative lengths can occur in the data we serialize (at minimum).
I've pushed an update that includes unit tests to cover this issue.
> IndexOutOfBoundsException during memtable flushing at startup (with
> offheap_objects)
> ------------------------------------------------------------------------------------
>
> Key: CASSANDRA-10579
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10579
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: 2.1.10 on linux
> Reporter: Jeff Griffith
> Assignee: Benedict
> Fix For: 2.1.x
>
>
> Sometimes we have problems at startup where memtable flushes with an index
> out of bounds exception as seen below. Cassandra is then dead in the water
> until we track down the corresponding commit log via the segment ID and
> remove it:
> {code}
> INFO [main] 2015-10-23 14:43:36,440 CommitLogReplayer.java:267 - Replaying
> /home/y/var/cassandra/commitlog/CommitLog-4-1445474832692.log
> INFO [main] 2015-10-23 14:43:36,440 CommitLogReplayer.java:270 - Replaying
> /home/y/var/cassandra/commitlog/CommitLog-4-1445474832692.log (CL version 4,
> messaging version 8)
> INFO [main] 2015-10-23 14:43:36,594 CommitLogReplayer.java:478 - Finished
> reading /home/y/var/cassandra/commitlog/CommitLog-4-1445474832692.log
> INFO [main] 2015-10-23 14:43:36,594 CommitLogReplayer.java:267 - Replaying
> /home/y/var/cassandra/commitlog/CommitLog-4-1445474832693.log
> INFO [main] 2015-10-23 14:43:36,595 CommitLogReplayer.java:270 - Replaying
> /home/y/var/cassandra/commitlog/CommitLog-4-1445474832693.log (CL version 4,
> messaging version 8)
> INFO [main] 2015-10-23 14:43:36,699 CommitLogReplayer.java:478 - Finished
> reading /home/y/var/cassandra/commitlog/CommitLog-4-1445474832693.log
> INFO [main] 2015-10-23 14:43:36,699 CommitLogReplayer.java:267 - Replaying
> /home/y/var/cassandra/commitlog/CommitLog-4-1445474832694.log
> INFO [main] 2015-10-23 14:43:36,699 CommitLogReplayer.java:270 - Replaying
> /home/y/var/cassandra/commitlog/CommitLog-4-1445474832694.log (CL version 4,
> messaging version 8)
> WARN [SharedPool-Worker-5] 2015-10-23 14:43:36,747
> AbstractTracingAwareExecutorService.java:169 - Uncaught exception on thread
> Thread[SharedPool-Worker-5,5,main]: {}
> java.lang.ArrayIndexOutOfBoundsException: 6
> at
> org.apache.cassandra.db.AbstractNativeCell.nametype(AbstractNativeCell.java:204)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.db.AbstractNativeCell.isStatic(AbstractNativeCell.java:199)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.db.composites.AbstractCType.compare(AbstractCType.java:166)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.db.composites.AbstractCellNameType$1.compare(AbstractCellNameType.java:61)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.db.composites.AbstractCellNameType$1.compare(AbstractCellNameType.java:58)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at org.apache.cassandra.utils.btree.BTree.find(BTree.java:277)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.utils.btree.NodeBuilder.update(NodeBuilder.java:154)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at org.apache.cassandra.utils.btree.Builder.update(Builder.java:74)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at org.apache.cassandra.utils.btree.BTree.update(BTree.java:186)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.db.AtomicBTreeColumns.addAllWithSizeDelta(AtomicBTreeColumns.java:225)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at org.apache.cassandra.db.Memtable.put(Memtable.java:210)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.db.ColumnFamilyStore.apply(ColumnFamilyStore.java:1225)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:396)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:359)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.db.commitlog.CommitLogReplayer$1.runMayThrow(CommitLogReplayer.java:455)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_31]
> at
> org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164)
> ~[apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
> [apache-cassandra-2.1.10.jar:2.1.10-SNAPSHOT]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_31]
> {code}
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