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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12035) Client does an RPC to master everytime a region is relocated
Date Tue, 03 Feb 2015 16:34:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14303543#comment-14303543
] 

stack commented on HBASE-12035:
-------------------------------

I did this to find the hanging tests:

kalashnikov-20:hbase.git.commit stack$ python ./dev-support/findHangingTests.py https://builds.apache.org/job/PreCommit-HBASE-Build/12672/consoleFull
Fetching the console output from the URL
Printing hanging tests
Hanging test : org.apache.hadoop.hbase.TestAcidGuarantees
Printing Failing tests
Failing test : org.apache.hadoop.hbase.master.TestAssignmentManagerOnCluster
Failing test : org.apache.hadoop.hbase.client.TestMetaWithReplicas


They passing for you [~octo47]?

> Client does an RPC to master everytime a region is relocated
> ------------------------------------------------------------
>
>                 Key: HBASE-12035
>                 URL: https://issues.apache.org/jira/browse/HBASE-12035
>             Project: HBase
>          Issue Type: Improvement
>          Components: Client, master
>    Affects Versions: 2.0.0
>            Reporter: Enis Soztutar
>            Assignee: Andrey Stepachev
>            Priority: Critical
>             Fix For: 2.0.0
>
>         Attachments: HBASE-12035 (1).patch, HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch,
HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch, HBASE-12035.patch,
HBASE-12035.patch, HBASE-12035.patch
>
>
> HBASE-7767 moved table enabled|disabled state to be kept in hdfs instead of zookeeper.
isTableDisabled() which is used in HConnectionImplementation.relocateRegion() now became a
master RPC call rather than a zookeeper client call. Since we do relocateRegion() calls everytime
we want to relocate a region (region moved, RS down, etc) this implies that when the master
is down, the some of the clients for uncached regions will be affected. 
> See HBASE-7767 and HBASE-11974 for some more background. 



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