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From "Michael Wohlwend (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-14014) Inserting of larger columns leads to exceptions and failing repairs
Date Thu, 16 Nov 2017 11:13:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-14014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16255136#comment-16255136
] 

Michael Wohlwend commented on CASSANDRA-14014:
----------------------------------------------

I can generate a test table with the same amount of data. If the errors show up again, I flush
the node and can send the sstable along with the log output with DEBUG enabled, if that is
helpful.



> Inserting of larger columns leads to exceptions and failing repairs
> -------------------------------------------------------------------
>
>                 Key: CASSANDRA-14014
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14014
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Repair
>         Environment: 7 node cluster, debian stretch, 32GB ram, 2TB disk, C* 3.11.1
>            Reporter: Michael Wohlwend
>         Attachments: cassandra-log.txt
>
>
> Inserting records with an unusual large text field (hundreds of MB instead of a few KB)
caused exceptions of the kind "mutation too large":
> ===========================
> ERROR [MutationStage-3] 2017-11-07 08:32:52,712 StorageProxy.java:1414 - Failed to apply
mutation locally : {}
> java.lang.IllegalArgumentException: Mutation of 185.439MiB is too large for the maximum
size of 64.000MiB
>         at org.apache.cassandra.db.commitlog.CommitLog.add(CommitLog.java:255) ~[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.db.Keyspace.applyInternal(Keyspace.java:585) ~[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:462) ~[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.db.Mutation.apply(Mutation.java:227) ~[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.db.Mutation.apply(Mutation.java:232) ~[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.db.Mutation.apply(Mutation.java:241) ~[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.service.StorageProxy$8.runMayThrow(StorageProxy.java:1408)
~[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.service.StorageProxy$LocalMutationRunnable.run(StorageProxy.java:2647)
[apache-cassandra-3.11.1.jar:3.11.1]
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_141]
>         at org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:162)
[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:134)
[apache-cassandra-3.11.1.jar:3.11.1]
>         at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109) [apache-cassandra-3.11.1.jar:3.11.1]
>         at java.lang.Thread.run(Thread.java:748) [na:1.8.0_141]
> WARN  [MutationStage-145] 2017-11-07 08:33:08,291 AbstractLocalAwareExecutorService.java:167
- Uncaught exception on thread Thread[MutationStage-145,5,main]: {}
> ====================================
> Trying to repair the table fails. In the end, the cassandra shuts down on the node.
> The exceptions thrown during repair are "EOF after xxx bytes out of YYY", "leak detected",

> "failed to create merkle tree ... OutOfMemory" and "self-supression not permitted".
> See the  attached log file (edited and shortened).
>  Michael



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