[jira] [Created] (HBASE-8020) CompactionRequest should not be based on regionId, but the encoded name instead

["Harsh J (JIRA)" <ji...@apache.org>]

Harsh J created HBASE-8020:
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             Summary: CompactionRequest should not be based on regionId, but the encoded name instead
                 Key: HBASE-8020
                 URL: https://issues.apache.org/jira/browse/HBASE-8020
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.94.2
            Reporter: Harsh J
            Priority: Minor


The compaction state check call of HRegionServer#getCompactionState extracts out the regionId (timestamp) of a region to store/check the compaction state. In usual runtime this is fine, as the timestamp is granular and varied for each region, making it practically unique but in no way should a timestamp be considered unique. A bug that comes out of this semi-bad assumption is that when a user pre-splits their table, the regionId is all the same across all regions created, leading to this check call returning improper values.

The ideal identifier could be the table name + encoded region name, if not the whole HRegionInfo identifier string itself.

Given that the user API just sends a normal identifier which is reevaluated, such a change shouldn't break anything.

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