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https://issues.apache.org/jira/browse/HDFS-1948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HDFS-1948:
------------------------
Attachment: 1948-part1.txt
Here is bulk of the port from branch-0.20-append of the recoverLease addition
added by the following JIRAs.
HDFS-1520. Lightweight NameNode operation recoverLease to trigger lease
recovery. (Hairong Kuang via dhruba)
HDFS-1555. Disallow pipelien recovery if a file is already being ease recovered
(hairong)
HDFS-1554. New semantics for recoverLease (hairong)
Its not complete yet. The NameNode no longer has methods nextGenerationStamp
(DatanodeProtocol) -- they are present in 0.20.x but not in TRUNK -- nor
nextGenerationStampForBlock. I'm trying to figure what the equivalents are
(Pointers welcome -- thanks).
> 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
> Attachments: 1948-part1.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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