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Posted to hdfs-dev@hadoop.apache.org by "Hanisha Koneru (JIRA)" <ji...@apache.org> on 2018/01/08 22:35:00 UTC

[jira] [Created] (HDFS-12996) DataNode Replica Trash

Hanisha Koneru created HDFS-12996:
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             Summary: 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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