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From "Francis Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11059) ZK-less region assignment
Date Mon, 09 Jun 2014 18:13:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025477#comment-14025477
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Francis Liu commented on HBASE-11059:
-------------------------------------

Interesting, I suspect zk is signifcantly slower because it syncs to disk (unlike hdfs). Can
we have a run without forceSync=no?

{quote}
For a patch for 0.98, let me give it a try. We need HBASE-10569 too. 
{quote}
Does it require the new deployment to make things work? Or is there just some bits of code
change that it depends on? We will keep the original deployment supported still correct?


{quote}
By the way, in the test, I set both openregion/closeregion thread to 20. The default is 3.
{quote}
Are there any other configs you changed?





> ZK-less region assignment
> -------------------------
>
>                 Key: HBASE-11059
>                 URL: https://issues.apache.org/jira/browse/HBASE-11059
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, Region Assignment
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>             Fix For: 0.99.0
>
>         Attachments: hbase-11059.patch, hbase-11059_v2.1.patch, hbase-11059_v2.patch,
zk-less_am.pdf
>
>
> It seems that most people don't like region assignment with ZK (HBASE-5487), which causes
many uncertainties. This jira is to support ZK-less region assignment. We need to make sure
this patch doesn't break backward compatibility/rolling upgrade.



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