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From "Andrey Elenskiy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-18066) Get with closest_row_before on "hbase:meta" can return empty Cell during region merge/split
Date Tue, 16 May 2017 22:58:04 GMT
Andrey Elenskiy created HBASE-18066:
---------------------------------------

             Summary: Get with closest_row_before on "hbase:meta" can return empty Cell during
region merge/split
                 Key: HBASE-18066
                 URL: https://issues.apache.org/jira/browse/HBASE-18066
             Project: HBase
          Issue Type: Bug
          Components: hbase, regionserver
    Affects Versions: 1.3.1
         Environment: Linux (16.04.2), MacOS 10.11.6.
Standalone and distributed HBase setup.
            Reporter: Andrey Elenskiy


During region split/merge there's a brief period of time where doing a "Get" with "closest_row_before=true"
on "hbase:meta" may return empty "GetResponse.result.cell" field even though parent, splitA
and splitB regions are all in "hbase:meta". Both gohbase (https://github.com/tsuna/gohbase)
and AsyncHBase (https://github.com/OpenTSDB/asynchbase) interprets this as "TableDoesNotExist"
which is returned to the client.

Here's a gist that reproduces this problem: https://gist.github.com/Timoha/c7a236b768be9220e85e53e1ca53bf96.
Note that you have to use older HTable client (I used 1.2.4) as current versions ignore `Get.setClosestRowBefore(bool)`
option.



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