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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7056) Snapshot support for truncate
Date Mon, 13 Oct 2014 21:51:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14170060#comment-14170060
] 

Jing Zhao commented on HDFS-7056:
---------------------------------

The proposed design looks pretty good to me. I agree we can copy the entire block list to
file snapshot copy right now.

> Snapshot support for truncate
> -----------------------------
>
>                 Key: HDFS-7056
>                 URL: https://issues.apache.org/jira/browse/HDFS-7056
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>    Affects Versions: 3.0.0
>            Reporter: Konstantin Shvachko
>
> Implementation of truncate in HDFS-3107 does not allow truncating files which are in
a snapshot. It is desirable to be able to truncate and still keep the old file state of the
file in the snapshot.



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