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Date: Wed, 12 Nov 2008 07:05:44 -0800 (PST)
From: "stack (JIRA)" <jira@apache.org>
To: hbase-dev@hadoop.apache.org
Subject: [jira] Commented: (HBASE-938) major compaction period is not
 checked periodically
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    [ 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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