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From "Jeremiah Jordan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9592) `Periodically attempt to submit background compaction tasks
Date Fri, 12 Jun 2015 22:19:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584182#comment-14584182
] 

Jeremiah Jordan commented on CASSANDRA-9592:
--------------------------------------------

bq. I think this change makes compaction kick scheduled here obsolete so we can delete it.

We should make this new task every 5/10 minutes then so that we don't start compactions early.
 The "5 minute window with no compactions" is nice to have to giving an operator time to disable
compaction over JMX or other such things.  So we shouldn't lower it down to only 1 minute.

> `Periodically attempt to submit background compaction tasks
> -----------------------------------------------------------
>
>                 Key: CASSANDRA-9592
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9592
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Benedict
>            Assignee: Benedict
>            Priority: Trivial
>             Fix For: 2.1.x
>
>
> There's more race conditions affecting compaction task submission than CASSANDRA-7745,
so to prevent some of these problems stalling compactions, I propose simply submitting background
compactions once every minute, if possible. This will typically be a no-op, but there's no
harm in that, since it's very cheap to do.



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