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Date: Tue, 11 Nov 2008 22:15:44 -0800 (PST)
From: "Billy Pearson (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=12646809#action_12646809 ] 

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

default I set my Major Compaction to once a week but on topic we need major compaction to run sometime even if no updates so we will able to remove expired ttl data in a timely fashion. not sure if timely = daily guess that depends on your setup and data.

Guess we need to decide whats acceptable ttl of expired ttl data.


> 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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