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From "Jeff Griffith (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10579) IndexOutOfBoundsException during memtable flushing at startup (with offheap_objects)
Date Mon, 26 Oct 2015 14:31:27 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14974292#comment-14974292
] 

Jeff Griffith commented on CASSANDRA-10579:
-------------------------------------------

thanks [~benedict]  i'll try to capture those. it seems to be tricky to identify the specific
commit log causing the problem. i'm trying to do some math with the segment ID but haven't
quite figured out how to isolate it. either way i'll try to attach something useful shortly.

re previous version, we have seen this before but since we just upgraded to 2.1.10 it does
seem to be becoming a more frequent occurrence.

> 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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