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From "HBase Review Board (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3181) Review, document, and fix up Regions-in-Transition timeout logic
Date Mon, 01 Nov 2010 19:10:24 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12927095#action_12927095
] 

HBase Review Board commented on HBASE-3181:
-------------------------------------------

Message from: "Jonathan Gray" <jgray@apache.org>


bq.  On 2010-11-01 12:04:42, stack wrote:
bq.  > trunk/src/main/java/org/apache/hadoop/hbase/master/handler/ServerShutdownHandler.java,
line 167
bq.  > <http://review.cloudera.org/r/1143/diff/4/?file=16342#file16342line167>
bq.  >
bq.  >     Want to document the return?

It's in the javadoc:     * Returns true if specified region should be assigned, false if not.

Just didn't put it in the @return... can fix that up on commit


- Jonathan


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> Review, document, and fix up Regions-in-Transition timeout logic
> ----------------------------------------------------------------
>
>                 Key: HBASE-3181
>                 URL: https://issues.apache.org/jira/browse/HBASE-3181
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver, zookeeper
>    Affects Versions: 0.90.0
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>            Priority: Blocker
>             Fix For: 0.90.0
>
>
> In some of the testing Stack and I have been doing, we've uncovered some issues with
concurrent RS failure and when the Master is under heavy load.  It's led to situations where
we handle ZK events far after they actually occur and have uncovered some issues in our timeout
logic.
> This jira is about reviewing the timeout semantics, especially around ZK usage, and ensuring
that we handle things appropriately.

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