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Posted to issues@hbase.apache.org by "Zhihong Yu (JIRA)" <ji...@apache.org> on 2012/05/19 16:48:07 UTC
[jira] [Commented] (HBASE-6058) Use ZK 3.4 API 'multi' in bulk
assignment
[ https://issues.apache.org/jira/browse/HBASE-6058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13279559#comment-13279559 ]
Zhihong Yu commented on HBASE-6058:
-----------------------------------
There hasn't been consensus as to which HBase version would require zk 3.4 as the minimum supported version.
> 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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