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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5848) Add a DatanodeCommand to inform datanodes that rolling upgrade is in progress
Date Thu, 30 Jan 2014 00:52:15 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HDFS-5848:
-----------------------------------------

    Attachment: h5848_20130130b.patch

h5848_20130130b.patch: add a rollingUpgradeInfo field to HeartbeatResponse instead of a new
DatanodeCommand.

> Add a DatanodeCommand to inform datanodes that rolling upgrade is in progress
> -----------------------------------------------------------------------------
>
>                 Key: HDFS-5848
>                 URL: https://issues.apache.org/jira/browse/HDFS-5848
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h5848_20130130.patch, h5848_20130130b.patch
>
>
> When rolling upgrade is in progress, NN should inform datanodes via heartbeat responses
so that datanode should create hardlinks when deleting blocks.  We need to add a new DatanodeCommand
here.  The datanode change will be done in a separated JIRA.



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