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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3234) Write pipeline does not recover from first node failure sometimes.
Date Mon, 14 Apr 2008 21:39:04 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Raghu Angadi updated HADOOP-3234:
---------------------------------

    Priority: Major  (was: Minor)

> Write pipeline does not recover from first node failure sometimes.
> ------------------------------------------------------------------
>
>                 Key: HADOOP-3234
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3234
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.16.0
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>
> While investigating HADOOP-3132, we had a misconfiguration that resulted in client writing
to first datanode in the pipeline with 15 second write timeout. As a result, client breaks
the pipeline marking the first datanode (DN1) as the bad node. It then restarts the next pipeline
with the rest of the of the datanodes. But the next (second) datanode was stuck waiting for
the the earlier block-write to complete. So the client repeats this procedure until it runs
out the datanodes and client write fails.
> I think this should be a blocker either for 0.16 or 0.17.

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