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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1937) [hbase] when the master times out a region server's lease, it is too aggressive in reclaiming the server's log
Date Fri, 05 Oct 2007 11:33:52 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12532624
] 

Hudson commented on HADOOP-1937:
--------------------------------

Integrated in Hadoop-Nightly #261 (See [http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/261/])

> [hbase] when the master times out a region server's lease, it is too aggressive in reclaiming
the server's log
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1937
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1937
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/hbase
>    Affects Versions: 0.15.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>             Fix For: 0.15.0
>
>         Attachments: patch.txt
>
>
> When a region server's lease times out, the master immediately begins trying to split
the server's log file. There have been cases where a region server was just a little late
reporting to the master and the master had already started trying to reclaim the server's
log, even though the server was still writing to it. 
> There needs to be some kind of "grace period" in which, if the region server reports
in, the master re-instates the server. If the "grace period" expires, then the master should
start processing the server's log.

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