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https://issues.apache.org/jira/browse/HBASE-3083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Gray reassigned HBASE-3083:
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Assignee: Prakash Khemani
Assigning to Prakash for now. I will work with him on this. Plan is to get
this done this week.
> Major compaction check should use new timestamp meta information in HFiles
> (rather than dfs timestamp) along with TTL to allow major even if single file
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-3083
> URL: https://issues.apache.org/jira/browse/HBASE-3083
> Project: HBase
> Issue Type: Improvement
> Reporter: Jonathan Gray
> Assignee: Prakash Khemani
> Fix For: 0.90.0
>
>
> Periodic major compactions have a separate set of checks prior to submitting
> the compaction request.
> Currently, if there is a single file, and it is the result of a major
> compaction, then it is skipped. However, there is a check that will still
> allow it if the timestamp of the file is older than the TTL of that Store.
> This is not ideal because the timestamp of the file is the latest timestamp
> in the file rather than the oldest. Meta information was introduced to
> HFiles that stores the max/min timestamp of KVs in the file. We should use
> the min timestamp from that meta info rather than the file stamp itself.
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