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https://issues.apache.org/jira/browse/CASSANDRA-7640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeremiah Jordan resolved CASSANDRA-7640.
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Resolution: Duplicate
> Seeing commit log grow unbounded
> --------------------------------
>
> Key: CASSANDRA-7640
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7640
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Jeremiah Jordan
> Assignee: Benedict
> Priority: Minor
> Fix For: 2.0.10
>
>
> While running 2.0.6 saw the commit log size grow up to 30 GB before
> restarting the node, with the max set to 1 GB.
> With DEBUG logging on CommitLog* we see segments are not being removed
> because they are still dirty. But for some reason the force flush when the
> active size is too large isn't happening (The active size gets printed out,
> and is 20+GB). The logs show normal "high volume" flushes happening, and
> force flushes of system.* stuff happening. But there are no flushes
> occurring for the memtables that are keeping the segments dirty.
> Upon restart the commit log replays fine with no errors. There are no errors
> from flushing to the post flusher. tpstats for both show 0 active 0 pending
> at times during.
> The only config change around this is that the segment size is larger than
> normal, it is set to 128 MB, as there are some very large columns being
> inserted (30+MB).
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