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From "Mikhail Antonov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11759) TableZnode should be cached
Date Fri, 15 Aug 2014 18:41:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14098904#comment-14098904

Mikhail Antonov commented on HBASE-11759:

There's another jira (linking) where table state is proposed to be moved out of ZK completely,
to be permanently saves inside HTableDescriptor, and cached in memory inside TableStateManager.
What do you think?

> TableZnode should be cached
> ---------------------------
>                 Key: HBASE-11759
>                 URL: https://issues.apache.org/jira/browse/HBASE-11759
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Virag Kothari
>            Assignee: Virag Kothari
> Observed on 0.98 with zk less assignment.
>  On receiving the rpc call about Region state transition, the rpc reader threads on master
tries to figure whether the table is in disabling or disabled state. For this they all read
tableznode which becomes a point of contention. We can just cache the state of table.

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