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From "Benedict (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10579) IndexOutOfBoundsException during memtable flushing at startup (with offheap_objects)
Date Mon, 26 Oct 2015 14:38:28 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14974303#comment-14974303
] 

Benedict commented on CASSANDRA-10579:
--------------------------------------

I've updated the branch to also check for this error on construction of the cell, so that
the problem should be elicited by the commit log segment containing the problematic data.
If the problem is deterministically induced by data in a segment, this will reliably produce
the error while processing that segment (so you shouldn't have to do any maths - just the
one it most recently logged).

Out of interest: have you disabled assertions on your node?


> 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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