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From "Billy Pearson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-938) major compaction period is not checked periodically
Date Sat, 01 Nov 2008 03:11:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644483#action_12644483
] 

Billy Pearson commented on HBASE-938:
-------------------------------------

Looking at trunk my idea above will not work because we do not have the optional flush any
more.

But yes the major compaction is based off the oldest timestamps from the mapfile's on the
store level.
So restarts do not interfere with the Major compactions but will queue up over due Major Compactions
because of the open.


> 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
>            Priority: Critical
>             Fix For: 0.19.0
>
>
> 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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