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https://issues.apache.org/jira/browse/HBASE-10833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13947310#comment-13947310
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Devaraj Das commented on HBASE-10833:
-------------------------------------
+1
> Region assignment may fail during cluster start up
> --------------------------------------------------
>
> Key: HBASE-10833
> URL: https://issues.apache.org/jira/browse/HBASE-10833
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Reporter: Jeffrey Zhong
> Assignee: Jeffrey Zhong
> Attachments: hbase-10833.patch
>
>
> This is an intermittent & infrequent issue. It happens when a cluster is
> starting up, only when one region server is available for region assignment
> temporally and master has a transient issue to talk to the only RS
> When the RPC layer has a hiccup to talk to a RS, the RS will be put in failed
> server list and it will stay in failed server list for 2 sec(default value).
> While the 20 region retires completes much shorter than 2 secs, the end
> result is a failed assignment.
> Below are the logging for the total time spent on 20 assignment retires, it
> only took about 36 ms for all the retries.
> {code}
> 2014-03-24 18:14:43,451 WARN [AM.ZK.Worker-pool2-t59]
> master.AssignmentManager: Failed assignment of
> hbase:labels,,1395668310177.f7372ede6c8bd7de4e91bfeda884cffb. to
> hor15n18.gq1.ygridcore.net,60020,1395684489232, trying to assign elsewhere
> instead; try=1 of 20
> ….
> 2014-03-24 18:14:43,487 WARN [AM.ZK.Worker-pool2-t59]
> master.AssignmentManager: Failed assignment of
> hbase:labels,,1395668310177.f7372ede6c8bd7de4e91bfeda884cffb. to
> hor15n18.gq1.ygridcore.net,60020,1395684489232, trying to assign elsewhere
> instead; try=20 of 20
> {code}
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