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https://issues.apache.org/jira/browse/CASSANDRA-10515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14977052#comment-14977052
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Jeff Griffith commented on CASSANDRA-10515:
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[~krummas] [~tjake] something interesting on this second form of commit log
growth where all nodes had uncontrolled commit log growth unless the first
example (many files in L0) where it was isolated nodes. for this latter case, I
think i'm able to relate this to a separate problem with an index out of bounds
exception. working with [~benedict] it seems like we have that one solved. i'm
hopeful that patch will solve this growing commit log problem as well. it seems
like all roads lead to rome where rome is commit log growth :-)
here is the other JIRA identifying an integer overflow in
AbstractNativeCell.java
https://issues.apache.org/jira/browse/CASSANDRA-10579
Still uncertain how to proceed with the first form that seems to be starvation
as you have described.
> 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: C5commitLogIncrease.jpg, CommitLogProblem.jpg,
> CommitLogSize.jpg, MultinodeCommitLogGrowth-node1.tar.gz, RUN3tpstats.jpg,
> cassandra.yaml, cfstats-clean.txt, stacktrace.txt, 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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