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Posted to mapreduce-dev@hadoop.apache.org by "Ravi Gummadi (JIRA)" <ji...@apache.org> on 2009/09/15 08:02:02 UTC
[jira] Resolved: (MAPREDUCE-644) distcp does not skip copying file
if we are updating single file
[ https://issues.apache.org/jira/browse/MAPREDUCE-644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ravi Gummadi resolved MAPREDUCE-644.
------------------------------------
Resolution: Duplicate
The code changes needed for this are included in the patch of MAPREDUCE-648.
> distcp does not skip copying file if we are updating single file
> ----------------------------------------------------------------
>
> Key: MAPREDUCE-644
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-644
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: distcp
> Reporter: Ravi Gummadi
> Assignee: Ravi Gummadi
> Attachments: d_singlefile_update.patch, d_singlefile_update644.patch
>
>
> distcp doesn't skip copying file when we do -update on single file if the destfile already exists.
> When we do
> hadoop distcp -update srcfilename destfilename
> it seems to be comparing checksums of srcfilename and destfilename/srcfilename and so skip is not done. It should compare checksums of srcfilename and destfilename.
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