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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8430) Erasure coding: update DFSClient.getFileChecksum() logic for stripe files
Date Mon, 04 Jan 2016 02:52:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15080639#comment-15080639
] 

Tsz Wo Nicholas Sze commented on HDFS-8430:
-------------------------------------------

> ... It looks like it's acceptable the file checksum for striped files are not compatible
or comparable with replicated files. ...

No, I mean changing the checksum algorithm for replicated files so that the new algorithm
can also handle striped files.  That's why I said that the new algorithm was incompatible
with the existing algorithm.

> Erasure coding: update DFSClient.getFileChecksum() logic for stripe files
> -------------------------------------------------------------------------
>
>                 Key: HDFS-8430
>                 URL: https://issues.apache.org/jira/browse/HDFS-8430
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: HDFS-7285
>            Reporter: Walter Su
>            Assignee: Kai Zheng
>         Attachments: HDFS-8430-poc1.patch
>
>
> HADOOP-3981 introduces a  distributed file checksum algorithm. It's designed for replicated
block.
> {{DFSClient.getFileChecksum()}} need some updates, so it can work for striped block group.



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