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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-10297) FileChecksum should provide getChecksumOpt method
Date Fri, 31 Jan 2014 00:06:24 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-10297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jing Zhao updated HADOOP-10297:

    Resolution: Duplicate
        Status: Resolved  (was: Patch Available)

The fix has been included in HADOOP-10295. Close this jira as duplicated. Thanks for the contribution,

> FileChecksum should provide getChecksumOpt method
> -------------------------------------------------
>                 Key: HADOOP-10297
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10297
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Laurent Goujon
>         Attachments: hadoop-10297.patch
> o.a.h.f.FileSystem has several methods which accepts directly or indirectly a ChecksumOpt
parameter to configure checksum options, but there's no generic way of querying checksum options
used for a given file.
> MD5MD5CRC32FileChecksum used by DFSClient has a getChecksumOpt() but since not just DistributedFileSystem
is accepting a ChecksumOpt argument, but any FileSystem subclass (although only DistributedFileSystem
implements a specific behaviour), I suggest to make getChecksumOpt an abstract method of FileChecksum.
This could be used by tools like DistCp to replicate checksum options for example.

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