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