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Date: Tue, 25 Mar 2014 23:01:16 +0000 (UTC)
From: "Devaraj Das (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12703599.1395782004074.5151.1395788476406@arcas>
In-Reply-To: <JIRA.12703599.1395782004074@arcas>
References: <JIRA.12703599.1395782004074@arcas>
Subject: [jira] [Commented] (HBASE-10833) Region assignment may fail during
 cluster start up
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    [ https://issues.apache.org/jira/browse/HBASE-10833?page=3Dcom.atlassia=
n.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D139=
47310#comment-13947310 ]=20

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=20
> When the RPC layer has a hiccup to talk to a RS, the RS will be put in fa=
iled server list and it will stay in failed server list for 2 sec(default v=
alue).=20
> While the 20 region retires completes much shorter than 2 secs, the end r=
esult is a failed assignment.=20
> 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.AssignmentM=
anager: Failed assignment of hbase:labels,,1395668310177.f7372ede6c8bd7de4e=
91bfeda884cffb. to hor15n18.gq1.ygridcore.net,60020,1395684489232, trying t=
o assign elsewhere instead; try=3D1 of 20
> =E2=80=A6.
> 2014-03-24 18:14:43,487 WARN  [AM.ZK.Worker-pool2-t59] master.AssignmentM=
anager: Failed assignment of hbase:labels,,1395668310177.f7372ede6c8bd7de4e=
91bfeda884cffb. to hor15n18.gq1.ygridcore.net,60020,1395684489232, trying t=
o assign elsewhere instead; try=3D20 of 20
> {code}


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