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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18796) Admin#isTableAvailable returns incorrect result before daughter regions are opened
Date Fri, 22 Sep 2017 20:35:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16177079#comment-16177079
] 

Hudson commented on HBASE-18796:
--------------------------------

SUCCESS: Integrated in Jenkins build HBase-1.5 #73 (See [https://builds.apache.org/job/HBase-1.5/73/])
HBASE-18796 Addendum: Scanner returning null incorrectly during (apurtell: rev 2f18d9e1559387eef9747c9fbda31534a8ec6f1f)
* (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionManager.java


> Admin#isTableAvailable returns incorrect result before daughter regions are opened
> ----------------------------------------------------------------------------------
>
>                 Key: HBASE-18796
>                 URL: https://issues.apache.org/jira/browse/HBASE-18796
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.3.1
>            Reporter: Abhishek Singh Chouhan
>            Assignee: Abhishek Singh Chouhan
>             Fix For: 2.0.0, 3.0.0, 1.4.0, 1.3.2, 1.5.0
>
>         Attachments: HBASE-18796-addendum.branch-1.patch, HBASE-18796-addendum.master.patch,
HBASE-18796.branch-1.001.patch, HBASE-18796.branch-1.001.patch, HBASE-18796.branch-1.002.patch,
HBASE-18796.branch-1.003.patch, HBASE-18796.master.001.patch
>
>
> Admin#isTableAvailable checks if it can getServerName for the meta entries it reads.
During the time of split server location are added to the meta entries in MetaTableAccessor#splitRegion
although the description of the method says "Does not add the location information to the
daughter regions since they are not open yet.". At this point during the split daughter regions
are not actually open, so we can get to a state where parent is offline, daughters are not
yet open but isTableAvailable returns true.



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