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https://issues.apache.org/jira/browse/CASSANDRA-4305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13289206#comment-13289206
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Sylvain Lebresne commented on CASSANDRA-4305:
---------------------------------------------
What's the big difficulty with not modifying RM objects once you've called
apply on them? And I really think RM object shouldn't be reused, doing so feels
like a bug because it means you will likely re-apply the same mutations
multiple time.
> CF serialization failure when working with custom secondary indices.
> --------------------------------------------------------------------
>
> Key: CASSANDRA-4305
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4305
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.10
> Reporter: Pavel Yaskevich
> Assignee: Pavel Yaskevich
> Labels: datastax_qa
> Fix For: 1.0.11
>
> Attachments: CASSANDRA-4305.patch
>
>
> Assertion (below) was triggered when client was adding new rows to
> Solr-backed secondary indices (1000-row batch without any timeout).
> {noformat}
> ERROR [COMMIT-LOG-WRITER] 2012-05-30 16:39:02,896
> AbstractCassandraDaemon.java (line 139) Fatal exception in thread
> Thread[COMMIT-LOG-WRITER,5,main]
> java.lang.AssertionError: Final buffer length 176 to accomodate data size of
> 123 (predicted 87) for RowMutation(keyspace='solrTest1338395932411',
> key='6b6579383039', modifications=[ColumnFamily(cf1
> [long:false:8@1338395942384024,stringId:false:13@1338395940586003,])])
> at
> org.apache.cassandra.utils.FBUtilities.serialize(FBUtilities.java:682)
> at
> org.apache.cassandra.db.RowMutation.getSerializedBuffer(RowMutation.java:279)
> at
> org.apache.cassandra.db.commitlog.CommitLogSegment.write(CommitLogSegment.java:122)
> at
> org.apache.cassandra.db.commitlog.CommitLog$LogRecordAdder.run(CommitLog.java:600)
> at
> org.apache.cassandra.db.commitlog.PeriodicCommitLogExecutorService$1.runMayThrow(PeriodicCommitLogExecutorService.java:49)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
> at java.lang.Thread.run(Thread.java:662)
> {noformat}
> After investigation it was clear that it was happening because we were
> holding instances of RowMutation queued to the addition to CommitLog to the
> actual "write" moment which is redundant.
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