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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12035) Keep table state in META
Date Wed, 11 Feb 2015 00:29:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14315267#comment-14315267
] 

Enis Soztutar commented on HBASE-12035:
---------------------------------------

Great to get this committed. Shouldn't we undo all the changes that is to do keeping the table
state in hdfs. The PB structures and HTD changes are deprecated, but we've never had a release
out having them, so we should just clean those up I think. 


> Keep table state in META
> ------------------------
>
>                 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: 12035v2.txt, HBASE-12035 (1) (1).patch, HBASE-12035 (1) (1).patch,
HBASE-12035 (1).patch, HBASE-12035 (2).patch, HBASE-12035 (2).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-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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