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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-724) Pipeline close hangs if one of the datanode is not responsive.
Date Fri, 02 Sep 2011 21:37:09 GMT

     [ https://issues.apache.org/jira/browse/HDFS-724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jitendra Nath Pandey updated HDFS-724:
--------------------------------------

    Attachment: HDFS-724.20-security.1.patch

Patch for 20-security uploaded.

> Pipeline close hangs if one of the datanode is not responsive.
> --------------------------------------------------------------
>
>                 Key: HDFS-724
>                 URL: https://issues.apache.org/jira/browse/HDFS-724
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node, hdfs client
>    Affects Versions: 0.21.0
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Hairong Kuang
>            Priority: Blocker
>             Fix For: 0.20-append, 0.21.0
>
>         Attachments: HDFS-724.20-security.1.patch, h724_20091021.patch, hbAckReply.patch,
pipelineHeartbeat.patch, pipelineHeartbeat1.patch, pipelineHeartbeat2.patch, stuckWriteAppend20.patch
>
>
> In the new pipeline design, pipeline close is implemented by sending an additional empty
packet.  If one of the datanode does not response to this empty packet, the pipeline hangs.
 It seems that there is no timeout.

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