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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7022) Use multi to batch offline regions in zookeeper
Date Tue, 23 Oct 2012 00:14:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481969#comment-13481969
] 

Jimmy Xiang commented on HBASE-7022:
------------------------------------

Currently, I think ZooKeeper#multi doesn’t help very much since it's synchronous, transactional,
and doesn’t support something like upsert in SQL (i.e.
create it if a node doesn’t exist, otherwise, update its data). It supports batch of size
less than 1MB. If we can have an asynchronous, non-transactional multi zookeeper client function,
which also supports upsert, it will really help.

                
> Use multi to batch offline regions in zookeeper
> -----------------------------------------------
>
>                 Key: HBASE-7022
>                 URL: https://issues.apache.org/jira/browse/HBASE-7022
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>
> Bulk assigner needs to set regions offline in zookeeper one by one. I was wondering if
we can have some performance improvement if we batch these operations using ZooKeeper#multi.

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