[
https://issues.apache.org/jira/browse/ZOOKEEPER-3049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16486677#comment-16486677
]
Fangmin Lv commented on ZOOKEEPER-3049:
---------------------------------------
The DataTree itself doesn't guarantee the atomic on multi-op, but the Zookeeper
pipeline guarantees the read and write request won't be processed concurrently,
the read request will be blocked in CommitProcessor when there is a write
request being processed.
> would zookeeper transaction(multi) block the concurrent read?
> -------------------------------------------------------------
>
> Key: ZOOKEEPER-3049
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3049
> Project: ZooKeeper
> Issue Type: Wish
> Components: documentation
> Reporter: wayne
> Priority: Major
>
> For instance, the original data for znode1 and znode2 are 2 and 4
> respectively. I want to perform increment operations over them. Finally, I
> would get (3, 5) for znode1 and znode2. In order to keep atomicity, I used
> multi() api. Is there any possibility that any clients could read (3, 4)
> concurrently? That is, the read happened after znode1++ and before znode2++?
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
