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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12923) DFS.concat should throw exception if files have different EC policies.
Date Wed, 13 Dec 2017 05:45:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lei (Eddy) Xu updated HDFS-12923:
---------------------------------
    Component/s: erasure-coding

> DFS.concat should throw exception if files have different EC policies. 
> -----------------------------------------------------------------------
>
>                 Key: HDFS-12923
>                 URL: https://issues.apache.org/jira/browse/HDFS-12923
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: erasure-coding
>    Affects Versions: 3.0.0
>            Reporter: Lei (Eddy) Xu
>            Priority: Critical
>
> {{DFS#concat}} appends blocks from different files to a single file. However, if these
files have different EC policies, or mixed with replicated and EC files, the resulted file
would be problematic to read, because the EC codec is defined in INode instead of in a block.




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