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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-3401) Region IPC operations should be high priority
Date Fri, 31 Dec 2010 03:06:45 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HBASE-3401:
-------------------------------

    Status: Open  (was: Patch Available)

oops, this patch doesn't work... will upload a new one soon.

> Region IPC operations should be high priority
> ---------------------------------------------
>
>                 Key: HBASE-3401
>                 URL: https://issues.apache.org/jira/browse/HBASE-3401
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.90.1
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.90.1
>
>         Attachments: hbase-3401.txt
>
>
> I manufactured an imbalanced cluster so one region server had 300 regions and the others
had very few. I then ran balancer while hitting the high-load region server with YCSB. I observed
that the rate of load shedding was VERY slow since the closeRegion IPCs were getting stuck
at the back of the IPC queue.
> All of these important master->RS RPC calls should be set to high priority.

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