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From "Jeremiah Jordan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10099) Improve concurrency in CompactionStrategyManager
Date Wed, 14 Sep 2016 23:46:20 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15491786#comment-15491786
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Jeremiah Jordan commented on CASSANDRA-10099:
---------------------------------------------

You would also want to make sure to check for any follow up changes to the code from the patch
that have been made in trunk to make sure the patch doesn't have bugs fixed later on...

> Improve concurrency in CompactionStrategyManager
> ------------------------------------------------
>
>                 Key: CASSANDRA-10099
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10099
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Yuki Morishita
>            Assignee: Marcus Eriksson
>              Labels: compaction, lcs
>             Fix For: 3.6
>
>
> Continue discussion from CASSANDRA-9882.
> CompactionStrategyManager(WrappingCompactionStrategy for <3.0) tracks SSTable changes
mainly for separating repaired / unrepaired SSTables (+ LCS manages level).
> This is blocking operation, and can lead to block of flush etc. when determining next
background task takes longer.
> Explore the way to mitigate this concurrency issue.



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