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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7619) Erasure Coding: Handling truncated files in snapshots
Date Wed, 11 Jan 2017 00:40:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Wang updated HDFS-7619:
------------------------------
    Summary: Erasure Coding: Handling truncated files in snapshots   (was: Erasure Coding:
Handling files in snapshots )

> Erasure Coding: Handling truncated 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: Takuya Fukudome
>
> 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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