[
https://issues.apache.org/jira/browse/CASSANDRA-10099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15042234#comment-15042234
]
Jeremiah Jordan commented on CASSANDRA-10099:
---------------------------------------------
That is better. Besides your fears about LCS (which I share). You probably
also want to take a look at pause and resume, as there is a comment in ACS
about needing them to synchronize with getNextBackgroundTask.
https://github.com/apache/cassandra/blob/cassandra-2.1/src/java/org/apache/cassandra/db/compaction/AbstractCompactionStrategy.java#L71-L80
> 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
> Fix For: 2.1.x, 2.2.x, 3.x
>
>
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
