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https://issues.apache.org/jira/browse/CASSANDRA-3269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13116783#comment-13116783
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Jonathan Ellis commented on CASSANDRA-3269:
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Hmm. Would be useful to have a debug log -- it would say this
{noformat}
logger.debug("Not safe to delete commit log " + segment + ";
dirty is " + segment.dirtyString() + "; hasNext: " + iter.hasNext());
{noformat}
whenever a CF was flushed but it can't remove a segment.
For bonus points, you could add a log message in CommitLog before it creates
the forceFlush runnable in createNewSegment when the size cap is exceeded.
> accumulated 100GB of commit logs
> --------------------------------
>
> Key: CASSANDRA-3269
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3269
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: Yang Yang
>
> I ran my cluster for about 2 days. the cluster has 2 nodes. I restarted one
> box several times, and the other one was always running. the one always
> running ended up accumulating 100GB of commit logs.
> this is 1.0.0 code from about Sept 15 in github. I kept the original setting
> for
> #commitlog_total_space_in_mb: 4096
> i.e. commented out
> here is some sample of the output:
> -rw-r--r-- 1 yyang yyang 134217857 2011-09-28 03:51
> CommitLog-1317181834810.log
> -rw-r--r-- 1 yyang yyang 134217869 2011-09-28 03:50
> CommitLog-1317181764105.log
> -rw-r--r-- 1 yyang yyang 134217783 2011-09-28 03:49
> CommitLog-1317181694633.log
> -rw-r--r-- 1 yyang yyang 134217750 2011-09-28 02:39
> CommitLog-1317176955102.log
> yyang@ip-10-71-21-46:/mnt/cass/log/cassandra$ ls -lt
> /mnt/cass/lib//cassandra/commitlog/|wc -l
> 727
> yyang@ip-10-71-21-46:/mnt/cass/log/cassandra$ du -s
> /mnt/cass/lib/cassandra/commitlog/
> 95095316 /mnt/cass/lib/cassandra/commitlog/
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