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https://issues.apache.org/jira/browse/HDFS-4872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13675234#comment-13675234
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Konstantin Shvachko commented on HDFS-4872:
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I missed to include Suresh's proposal of deleting by inode id, sorry. Will edit 
the summary now to include it.
                
> Idempotent delete operation.
> ----------------------------
>
>                 Key: HDFS-4872
>                 URL: https://issues.apache.org/jira/browse/HDFS-4872
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.0.4-alpha
>            Reporter: Konstantin Shvachko
>
> Making delete idempotent is important to provide uninterrupted job execution 
> in case of HA failover.
> This is to discuss different approaches to idempotent implementation of 
> delete.

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