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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4052) Enabling a table after master switch is not allowing table scan. Throws NotServingRegionException
Date Fri, 08 Jul 2011 20:40:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13062166#comment-13062166

Ted Yu commented on HBASE-4052:

Running your unit test, I got:
 Time elapsed: 24.594 sec  <<< ERROR!
        at $Proxy12.isMasterRunning(Unknown Source)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getMaster(HConnectionManager.java:553)
        at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:101)
        at org.apache.hadoop.hbase.HBaseTestingUtility.getHBaseAdmin(HBaseTestingUtility.java:1162)
        at org.apache.hadoop.hbase.master.TestMasterRestartAfterDisablingTable.testForCheckingIfEnableAndDisableWorksFineAfterSwitch(TestMasterRestartAfterDisablingTable.java:105)
I think we should wait for backup master to come up before doing:
    log("Enabling table\n");

> Enabling a table after master switch is not allowing table scan.  Throws NotServingRegionException
> --------------------------------------------------------------------------------------------------
>                 Key: HBASE-4052
>                 URL: https://issues.apache.org/jira/browse/HBASE-4052
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.3
>         Environment: Linux
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.90.4
>         Attachments: Disabled.bmp, Disabling-1.bmp, Disabling-2.bmp, HBASE-4052.patch,
> Following is the scenario:
> Start RS and Active and standby masters
> Create table and insert data.
> Disable the table.
> Stop the active master and switch to the standby master.
> Now enable the table.
> Do a scan on the enabled table.
> NotServingRegionException is Thrown.
> But the same works well when we dont switch the master.

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