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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-938) major compaction period is not checked periodically
Date Wed, 12 Nov 2008 15:05:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12646923#action_12646923
] 

stack commented on HBASE-938:
-----------------------------

I will up the period, make it two days at least.

But was thinking too that we should mark files that have been major compacted -- write the
fact into the files metadata or into the file name -- and before running another, check the
column descriptor to see if TTL is forever; if it is, do not run another major compaction
if only one file to compact.

> major compaction period is not checked periodically
> ---------------------------------------------------
>
>                 Key: HBASE-938
>                 URL: https://issues.apache.org/jira/browse/HBASE-938
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.18.0, 0.18.1
>         Environment: HBase 0.18 branch (should be RC1) + Hadoop 0.18 branch
>            Reporter: Rong-En Fan
>            Assignee: stack
>            Priority: Critical
>             Fix For: 0.19.0
>
>         Attachments: 938.patch, major.patch
>
>
> The major compaction period, hbase.hregion.majorcompaction, is not checked periodically.
Currently, we only request major compaction when the region is open or split at which point
we check whether the major compaction period is due.

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