steveloughran opened a new pull request #1936: HADOOP-16932. distcp copy calls getFileStatus() needlessly and can fail against S3 URL: https://github.com/apache/hadoop/pull/1936 Contributed by Steve Loughran. Strips out all the attributes which have already been processed, before deciding whether or not to query the far end for the status of the file. This will avoid 404 caching-related issues in S3, and save time and a bit of IO everywhere.
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