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From "Andrey Stepachev (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12203) Remove Master from table status query path.
Date Wed, 08 Oct 2014 14:45:34 GMT
Andrey Stepachev created HBASE-12203:
----------------------------------------

             Summary: Remove Master from table status query path.
                 Key: HBASE-12203
                 URL: https://issues.apache.org/jira/browse/HBASE-12203
             Project: HBase
          Issue Type: Improvement
          Components: Client, master
    Affects Versions: 2.0.0
            Reporter: Andrey Stepachev
             Fix For: 1.0.0, 2.0.0


With patch HBASE-7767 we moved table statuses from ZK to HDFS. That was a good cleanup, but
we put additional (substantial) load on master. Some client requests use checks for table
state (for example HBASE-12035). 
Thats is why patch was not back ported to branch1 (HBASE-11978)

Lets replicate state back to zk, but as a mirror of table states.

What can be done:
1. TableStateManager would push table state changes to zk
2. Return back ZKTableStateClientSideReader.



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