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From "Marcus Eriksson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10276) With DTCS, do STCS in windows if more than max_threshold sstables
Date Fri, 23 Oct 2015 07:43:27 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14970598#comment-14970598
] 

Marcus Eriksson commented on CASSANDRA-10276:
---------------------------------------------

[~Bj0rn] I don't think it is worth it to always do compaction in a window, say there is a
10kb file and a 50gig file in the same window, we should never compact those together

I pushed a new commit to the repository that always does STCS within the window to avoid this
situation

> With DTCS, do STCS in windows if more than max_threshold sstables
> -----------------------------------------------------------------
>
>                 Key: CASSANDRA-10276
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10276
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core
>            Reporter: Marcus Eriksson
>            Assignee: Marcus Eriksson
>             Fix For: 3.x, 2.1.x, 2.2.x
>
>
> To avoid constant recompaction of files in big ( > max threshold) DTCS windows, we
should do STCS of those files.
> Patch here: https://github.com/krummas/cassandra/commits/marcuse/dtcs_stcs



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