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https://issues.apache.org/jira/browse/CASSANDRA-3758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13194059#comment-13194059
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Jackson Chung commented on CASSANDRA-3758:
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confirmed that disable multithreaded_compaction allows compaction to finish
> parallel compaction hang (on large rows?)
> -----------------------------------------
>
> Key: CASSANDRA-3758
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3758
> Project: Cassandra
> Issue Type: Bug
> Reporter: Jackson Chung
> Assignee: Sylvain Lebresne
> Attachments: cassandra.log.zip
>
>
> it is observed that:
> nodetool -h 127.0.0.1 -p 8080 compactionstats
> pending tasks: 1
> compaction type keyspace column family bytes compacted bytes total progress
> Compaction SyncCoreComputedContactNetworks 119739938 0 n/a
> and that is not moving (ie the bytes compacted never increase, the bytes
> total stay 0).
> this is probably going to be difficult to reproduce, as the problem is
> observed when compacting 15 large sstables (total ~300G).
> attaching the thread dumps (along with logs), when such happen.
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