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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5790) ZKUtil deleteRecursively should be a recoverable operation
Date Wed, 18 Apr 2012 03:45:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13256177#comment-13256177
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stack commented on HBASE-5790:
------------------------------

This patch requires zk 3.4.x right but it doesn't check that version running before it goes
and uses this new Transaction feature (I'm not sure if you even can ask zk its ensemble version
from the client)?  If a user puts 3.3.x under hbase, we'll hang doing this call?
                
> ZKUtil deleteRecursively should be a recoverable operation
> ----------------------------------------------------------
>
>                 Key: HBASE-5790
>                 URL: https://issues.apache.org/jira/browse/HBASE-5790
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jesse Yates
>            Assignee: Jesse Yates
>              Labels: zookeeper
>             Fix For: 0.96.0, 0.94.1
>
>         Attachments: java_HBASE-5790-v1.patch, java_HBASE-5790.patch
>
>
> As of 3.4.3 Zookeeper now has full, multi-operation transaction. This means we can wholesale
delete chunks of the zk tree and ensure that we don't have any pesky recursive delete issues
where we delete the children of a node, but then a child joins before deletion of the parent.
Even without transactions, this should be the behavior, but it is possible to make it much
cleaner now that we have this new feature in zk.

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