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https://issues.apache.org/jira/browse/HDFS-12996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16317266#comment-16317266
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Wei-Chiu Chuang commented on HDFS-12996:
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Just FYI, you should be able to move the jira from HADOOP to HDFS by clicking
on More -> Move.
I've done the same many times
> DataNode Replica Trash
> ----------------------
>
> Key: HDFS-12996
> URL: https://issues.apache.org/jira/browse/HDFS-12996
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Hanisha Koneru
> Assignee: Hanisha Koneru
> Attachments: DataNode_Replica_Trash_Design_Doc.pdf
>
>
> DataNode Replica Trash will allow administrators to recover from a recent
> delete request that resulted in catastrophic loss of user data. This is
> achieved by placing all invalidated blocks in a replica trash on the datanode
> before completely purging them from the system. The design doc is attached
> here.
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