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Posted to hdfs-issues@hadoop.apache.org by "Takuya Fukudome (JIRA)" <ji...@apache.org> on 2015/03/26 09:14:53 UTC

[jira] [Commented] (HDFS-7619) Erasure Coding: Handling files in snapshots

    [ https://issues.apache.org/jira/browse/HDFS-7619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14381543#comment-14381543 ] 

Takuya Fukudome commented on HDFS-7619:
---------------------------------------

Hi [~jingzhao],

I am interested in working on this jira. Could you assign to me? Thank you.

> Erasure Coding: Handling files in snapshots 
> --------------------------------------------
>
>                 Key: HDFS-7619
>                 URL: https://issues.apache.org/jira/browse/HDFS-7619
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>
> Currently for files within snapshots, the file diff only records block list (before the truncate feature we only recorded file length). Now the file diff should also be able to capture the block groups.
> In the meanwhile, if a file has been truncated in history and the change has been recorded in snapshots, when we convert the file to EC, the conversion should also cover the data that were truncated and the corresponding file diff needs to be updated accordingly.



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