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Posted to common-issues@hadoop.apache.org by "Hanisha Koneru (JIRA)" <ji...@apache.org> on 2018/01/08 22:36:00 UTC

[jira] [Commented] (HADOOP-15164) DataNode Replica Trash

    [ https://issues.apache.org/jira/browse/HADOOP-15164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16317246#comment-16317246 ] 

Hanisha Koneru commented on HADOOP-15164:
-----------------------------------------

Should have been in HDFS. Sorry for the duplication. Moved it to HDFS-12996.

> DataNode Replica Trash
> ----------------------
>
>                 Key: HADOOP-15164
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15164
>             Project: Hadoop Common
>          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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