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https://issues.apache.org/jira/browse/HBASE-938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-938:
------------------------

    Attachment: 938-v7.patch

Now you'll see messages like this if we try to do major compaction on a file 
that has already been major compacted:

{code}
2008-11-15 00:19:30,441 [regionserver/0:0:0:0:0:0:0:0:60020.compactor] DEBUG 
org.apache.hadoop.hbase.regionserver.HStore: Skipping major compaction because 
one major compacted file only and elapsedTime 1250119 is < ttl -1
{code}

> 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-v4.patch, 938-v6.patch, 938-v7.patch, 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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