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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3774) Manage ZK connections by components and ensembles
Date Thu, 05 May 2011 06:03:03 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13029148#comment-13029148

stack commented on HBASE-3774:

Does HBASE-3777 take care of this?  I see we are careful making new HCMs and its in the HCM
constructor that we go get new ZKW.

> Manage ZK connections by components and ensembles
> -------------------------------------------------
>                 Key: HBASE-3774
>                 URL: https://issues.apache.org/jira/browse/HBASE-3774
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.90.2
>            Reporter: Jean-Daniel Cryans
>            Priority: Blocker
>             Fix For: 0.92.0
> This is the real fix to HBASE-3773, we need to stop creating so many connections to ZK.
Currently the problem is that we don't want to mix connections between the region server,
a client, and whatever else in a JVM that requires talking to ZK. The current situation is
a (non-intended) tradeoff of worse usability for easier unit testing.
> Another thing to take into account is that a client or a region server needs to be able
to talk to more than one ensemble at the same time (CopyTable, replication are examples).

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