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From "Wei Deng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10172) Hint compaction isn't actually disabled
Date Sat, 12 Sep 2015 01:28:45 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14741836#comment-14741836
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Wei Deng commented on CASSANDRA-10172:
--------------------------------------

I tested this on C* 2.1 and saw the same behavior, i.e. even though in the schema definition
of system.hints table I could find the following line:

 AND compaction = {'enabled': 'false', 'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy'}

I still saw compactions happening on the SSTable files and system.log also indicates the same.

> Hint compaction isn't actually disabled
> ---------------------------------------
>
>                 Key: CASSANDRA-10172
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10172
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Aleksey Yeschenko
>             Fix For: 2.2.x
>
>         Attachments: system (3).log
>
>
> 3 node cluster, 100M writes.
> Test Start: 00:00:00
> Node 1 Killed: 00:05:48
> Node 2 Killed: 00:13:33
> Node 1 Started: 00:24:20
> Node 2 Started: 00:32:23
> Test Done: 00:38:33
> Node 1 hints replay finished: 00:56:16
> Node 2 hints replay finished: 01:00:16
> Node 3 hints replay finished: 02:08:00
> Log attached.  Note that lots of compaction happens on system.hints before handoff begins.



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