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https://issues.apache.org/jira/browse/HADOOP-3873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12621046#action_12621046
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Tsz Wo (Nicholas), SZE commented on HADOOP-3873:
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> One question : extending the example in the 2nd commend above, what happens
> if /user1/data/file1 is deleted on the source before the second day? will it
> be deleted on the destination? If yes, may be some option like "-sync" will
> make it more clear to the user (of course "-sizelimit" etc still apply).
+1 "-sync" is probably our next step.
> DistCp should have an option for limiting the number of files/bytes being
> copied
> --------------------------------------------------------------------------------
>
> Key: HADOOP-3873
> URL: https://issues.apache.org/jira/browse/HADOOP-3873
> Project: Hadoop Core
> Issue Type: New Feature
> Components: tools/distcp
> Reporter: Tsz Wo (Nicholas), SZE
>
> A single DistCp command may potentially copies a huge number of files/bytes.
> In such case, DistCp will run a long time and there is no way stop it nicely.
> It would be good if DistCp have an option to limit the number of files/bytes
> being copied. Once the limit is reached, DistCp will terminate and return
> success. All files copied are guaranteed to be good and there is no
> partially copied file.
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