DistCp should support an option for deleting non-existing files.
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Key: HADOOP-3939
URL: https://issues.apache.org/jira/browse/HADOOP-3939
Project: Hadoop Core
Issue Type: New Feature
Components: tools/distcp
Reporter: Tsz Wo (Nicholas), SZE
One use case of DistCp is to sync two directories. Currently, DistCp has an
-update option for overwriting dst files if src is different from dst.
However, it is not enough for sync. If there are some files in dst but not
exist in src, there is no easy way to delete them. We should add a new option,
say -delete, so that DistCp will delete the non-existing in dst.
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