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Posted to issues@hbase.apache.org by "Jimmy Xiang (JIRA)" <ji...@apache.org> on 2012/10/23 02:14:15 UTC

[jira] [Commented] (HBASE-7022) Use multi to batch offline regions in zookeeper

    [ 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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