steveloughran opened a new pull request #2742:
URL: https://github.com/apache/hadoop/pull/2742
s3a rename to support
fs.s3a.rename.raises.exceptions: raise exceptions on rename failures
fs.s3a.rename.reduced.probes: don't look for parent dir (LIST), just verify
it isn't a file.
The reduced probe not only saves money, it avoids race conditions
where one thread deleting a subdir can cause LIST <parent> to fail before
a dir marker is recreated.
Note:
* file:// rename() creates parent dirs, so this isn't too dangerous.
* tests will switch modes.
We could always just do the HEAD; topic for discussion. This patch: optional
Change-Id: Ic0f8a410b45fef14ff522cb5aa1ae2bc19c8eeee
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