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From "nkeywal (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5573) Replace client ZooKeeper watchers by simple ZooKeeper reads
Date Wed, 21 Mar 2012 16:17:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13234462#comment-13234462
] 

nkeywal commented on HBASE-5573:
--------------------------------

Oops; there is another -big- issue: you need a watcher if you want to get the info on session
expiry... So isolating it is not possible. That breaks the patch it seems. 
                
> Replace client ZooKeeper watchers by simple ZooKeeper reads
> -----------------------------------------------------------
>
>                 Key: HBASE-5573
>                 URL: https://issues.apache.org/jira/browse/HBASE-5573
>             Project: HBase
>          Issue Type: Improvement
>          Components: client, zookeeper
>    Affects Versions: 0.96.0
>            Reporter: nkeywal
>            Assignee: nkeywal
>            Priority: Minor
>         Attachments: 5573.v1.patch, 5573.v2.patch
>
>
> Some code in the package needs to read data in ZK. This could be done by a simple read,
but is actually implemented with a watcher. This holds ZK resources.
> Fixing this could also be an opportunity to remove the need for the client to provide
the master address and port.

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