[
https://issues.apache.org/jira/browse/HDFS-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13886108#comment-13886108
]
Suresh Srinivas commented on HDFS-5848:
---------------------------------------
I actually think this just be an upgrade state that is part of
HeartbeatResponse instead of a separate command, much like the {{haStatus}}
member it currently has.
> Add rolling upgrade infomation to heartbeat response
> ----------------------------------------------------
>
> 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
> only change heartbeat response here. The datanode change will be done in a
> separated JIRA.
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
