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https://issues.apache.org/jira/browse/HBASE-21504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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xuming updated HBASE-21504:
---------------------------
Summary: When Using FIFOCompactionPolicy, in some case, doing a compaction
will write a initial hfile which will never be TTL expired (was: Using
FIFOCompactionPolicy, a compact my write a empty HFile. And the HFile will
never be expired )
> When Using FIFOCompactionPolicy, in some case, doing a compaction will write
> a initial hfile which will never be TTL expired
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-21504
> URL: https://issues.apache.org/jira/browse/HBASE-21504
> Project: HBase
> Issue Type: Bug
> Components: Compaction
> Affects Versions: 2.1.0
> Reporter: xuming
> Priority: Critical
> Attachments: 1.patch
>
>
> When i use FIFOCompactionPolicy, and if all hfiles(>1) are TTL expired in a
> region, once we do a compaction on the region, the compaction policy will
> select the latest hfile to do compaction.But beacuse the hfile is already TTL
> expired, compactor will write a new hfile(whose entry counter is 0 and
> maxTimeStamp is Long.MAX_VALUE). The new hfile will never be TTL expired, so
> we can never remove it by FIFOCompactionPolicy.
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