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From "nkeywal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-6058) Use ZK 3.4 API 'multi' in bulk assignment
Date Sat, 19 May 2012 08:47:02 GMT
nkeywal created HBASE-6058:

             Summary: Use ZK 3.4 API 'multi' in bulk assignment
                 Key: HBASE-6058
                 URL: https://issues.apache.org/jira/browse/HBASE-6058
             Project: HBase
          Issue Type: Improvement
          Components: master, zookeeper
    Affects Versions: 0.96.0
            Reporter: nkeywal
            Assignee: nkeywal
            Priority: Minor

We use async API today. This is already much much faster than the sync API. Still, it makes
sense to use the 'multi' function: this will decrease the network & zookeeper load at
startup/rolling restart.

On a 500 nodes cluster, we see 3 that 3 seconds are spent on updating ZK per bulk assignment.
This should cut it in half (+ the benefits on the network/zk load).

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