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https://issues.apache.org/jira/browse/CASSANDRA-10515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14959074#comment-14959074
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Mikhail Stepura commented on CASSANDRA-10515:
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[~jeffery.griffith] could you please attach a thread dump as well?
> Commit logs back up with move to 2.1.10
> ---------------------------------------
>
> Key: CASSANDRA-10515
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10515
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: redhat 6.5, cassandra 2.1.10
> Reporter: Jeff Griffith
> Assignee: Branimir Lambov
> Priority: Critical
> Labels: commitlog, triage
> Attachments: CommitLogProblem.jpg, CommitLogSize.jpg, system.log.clean
>
>
> After upgrading from cassandra 2.0.x to 2.1.10, we began seeing problems
> where some nodes break the 12G commit log max we configured and go as high as
> 65G or more before it restarts. Once it reaches the state of more than 12G
> commit log files, "nodetool compactionstats" hangs. Eventually C* restarts
> without errors (not sure yet whether it is crashing but I'm checking into it)
> and the cleanup occurs and the commit logs shrink back down again. Here is
> the nodetool compactionstats immediately after restart.
> {code}
> jgriffith@prod1xc1.c2.bf1:~$ ndc
> pending tasks: 2185
> compaction type keyspace table completed
> total unit progress
> Compaction SyncCore *cf1* 61251208033
> 170643574558 bytes 35.89%
> Compaction SyncCore *cf2* 19262483904
> 19266079916 bytes 99.98%
> Compaction SyncCore *cf3* 6592197093
> 6592316682 bytes 100.00%
> Compaction SyncCore *cf4* 3411039555
> 3411039557 bytes 100.00%
> Compaction SyncCore *cf5* 2879241009
> 2879487621 bytes 99.99%
> Compaction SyncCore *cf6* 21252493623
> 21252635196 bytes 100.00%
> Compaction SyncCore *cf7* 81009853587
> 81009854438 bytes 100.00%
> Compaction SyncCore *cf8* 3005734580
> 3005768582 bytes 100.00%
> Active compaction remaining time : n/a
> {code}
> I was also doing periodic "nodetool tpstats" which were working but not being
> logged in system.log on the StatusLogger thread until after the compaction
> started working again.
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