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Posted to dev@hbase.apache.org by "Yi Deng (JIRA)" <ji...@apache.org> on 2014/04/03 02:33:14 UTC

[jira] [Created] (HBASE-10901) Bug of createMultiRegions

Yi Deng created HBASE-10901:
-------------------------------

             Summary: Bug of createMultiRegions
                 Key: HBASE-10901
                 URL: https://issues.apache.org/jira/browse/HBASE-10901
             Project: HBase
          Issue Type: Bug
          Components: test
    Affects Versions: 0.89-fb
            Reporter: Yi Deng
             Fix For: 0.89-fb


createMultiRegions and its friends have a problem that leads a bug getting null HRegionInfo from the .META. table in metaScan.

The reason is : After createMultiRegions creates new regions, it deletes old region  info from the META table. But some region server may have been openning the regions (though with a very low probability). After the rows of the openning region is completely removed, the region is openned. Then the region server tells the master its server and startCode. The master then write a row of only server address and startCode back to the META. Then a row without HRegionInfo in META table is generated.

Suggestion of fix is not to use this method. Create tables directly with specified start/stop keys.



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