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https://issues.apache.org/jira/browse/HBASE-15055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15075641#comment-15075641
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Ted Yu commented on HBASE-15055:
--------------------------------

{code}
139           if (cfTtl != HConstants.FOREVER && oldest > cfTtl) {
{code}
If there is only one file satisfying the above condition among all the 
candidates, major compaction would be performed.

Is there more effective way to make major compaction pay off ?

> Major compaction is not triggered when both of TTL and 
> hbase.hstore.compaction.max.size are set
> -----------------------------------------------------------------------------------------------
>
>                 Key: HBASE-15055
>                 URL: https://issues.apache.org/jira/browse/HBASE-15055
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Eungsop Yoo
>            Priority: Minor
>         Attachments: HBASE-15055-v1.patch, HBASE-15055.patch
>
>
> Some large files may be skipped by hbase.hstore.compaction.max.size in 
> candidate selection. It causes skipping of major compaction. So the TTL 
> expired records are still remained in the disks and keep consuming disks.
> To resolve this issue, I suggest that to skip large files only if there is no 
> TTL expired record.



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