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Posted to hdfs-issues@hadoop.apache.org by "Bharat Viswanadham (JIRA)" <ji...@apache.org> on 2018/03/16 18:31:00 UTC

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

     [ https://issues.apache.org/jira/browse/HDFS-12996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bharat Viswanadham updated HDFS-12996:
--------------------------------------
    Attachment: HDFS-13277-HDFS-12996.01.patch

> 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
>            Priority: Major
>         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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