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https://issues.apache.org/jira/browse/HBASE-5199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13188840#comment-13188840
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Phabricator commented on HBASE-5199:
------------------------------------
khemani has commented on the revision "[jira][HBASE-5199] Delete out of TTL
store files before compaction selection ".
INLINE COMMENTS
src/main/java/org/apache/hadoop/hbase/regionserver/Store.java:1016 find out
the set of files to be deleted in a read lock. If that set is non-empty, then
acquire the write lock and remove the to-be-deleted set of files (if they still
exist) from the storefiles set.
REVISION DETAIL
https://reviews.facebook.net/D1311
> Delete out of TTL store files before compaction selection
> ---------------------------------------------------------
>
> Key: HBASE-5199
> URL: https://issues.apache.org/jira/browse/HBASE-5199
> Project: HBase
> Issue Type: Improvement
> Reporter: Liyin Tang
> Assignee: Liyin Tang
> Attachments: D1311.1.patch, D1311.2.patch, D1311.3.patch
>
>
> Currently, HBase deletes the out of TTL store files after compaction. We can
> change the sequence to delete the out of TTL store files before selecting
> store files for compactions.
> In this way, HBase can keep deleting the old invalid store files without
> compaction, and also prevent from unnecessary compactions since the out of
> TTL store files will be deleted before the compaction selection.
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