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https://issues.apache.org/jira/browse/HDFS-1948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044979#comment-13044979
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Hairong Kuang commented on HDFS-1948:
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Both patches look good! Stack, thanks for your time porting this feature.
For the trunk, we already moved away from the version based RPC compatibility.
Instead we take the method name base approach. Check HADOOP-6904. So there is
no need to bump the version number. Instead dfsclient should use the method
name to see if the server supports recoverLease or not.
> Forward port 'hdfs-1520 lightweight namenode operation to trigger lease
> reccovery'
> ----------------------------------------------------------------------------------
>
> Key: HDFS-1948
> URL: https://issues.apache.org/jira/browse/HDFS-1948
> Project: Hadoop HDFS
> Issue Type: Task
> Reporter: stack
> Assignee: stack
> Attachments: 1948-part1.txt, 1948-v2.txt, 1948-v3.txt, 1948-v3.txt,
> 1948-v4.22.txt, 1948-v4.txt
>
>
> This issue is about forward porting from branch-0.20-append the little
> namenode api that facilitates stealing of a file's lease. The forward port
> would be an adaption of hdfs-1520 and its companion patches, hdfs-1555 and
> hdfs-1554, to suit the TRUNK.
> Intent is to get this fix into 0.22 time willing; i'll run a vote to get ok
> on getting it added to branch. HBase needs this facility.
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