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List:       hadoop-dev
Subject:    [jira] Commented: (HADOOP-4103) Alert for missing blocks
From:       "Bill Au (JIRA)" <jira () apache ! org>
Date:       2009-02-28 2:37:12
Message-ID: 1985690856.1235788632795.JavaMail.jira () brutus
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    [ https://issues.apache.org/jira/browse/HADOOP-4103?page=com.atlassian.jira.plugin \
.system.issuetabpanels:comment-tabpanel&focusedCommentId=12677630#action_12677630 ] 

Bill Au commented on HADOOP-4103:
---------------------------------

I think this feature is very useful and would like to see it for 0.20 too.

> Alert for missing blocks
> ------------------------
> 
> Key: HADOOP-4103
> URL: https://issues.apache.org/jira/browse/HADOOP-4103
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Affects Versions: 0.17.2
> Reporter: Christian Kunz
> Assignee: Raghu Angadi
> Attachments: HADOOP-4103.patch, HADOOP-4103.patch, HADOOP-4103.patch
> 
> 
> A whole bunch of datanodes became dead because of some network problems resulting \
> in  heartbeat timeouts although datanodes were fine. Many processes started to fail \
> because of the corrupted filesystem. In order to catch and diagnose such problems \
> faster the namenode should detect the corruption automatically and provide a way to \
> alert operations. At the minimum it should show the fact of corruption on the GUI.

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