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Posted to issues@hbase.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2011/01/04 03:45:47 UTC
[jira] Updated: (HBASE-3401) Region IPC operations should be high
priority
[ https://issues.apache.org/jira/browse/HBASE-3401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon updated HBASE-3401:
-------------------------------
Attachment: hbase-3401.txt
Old patch didn't work because annotations aren't inherited from interfaces into the methods in the actual class, which is where I was trying to read them from.
New patch moves the whole shebang into HRegionServer and appears to actually work ;-)
> 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, 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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