steveloughran commented on a change in pull request #2742:
URL: https://github.com/apache/hadoop/pull/2742#discussion_r590442351
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File path:
hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/troubleshooting_s3a.md
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@@ -1126,6 +1126,26 @@ We also recommend using applications/application
options which do not rename files when committing work or when copying data
to S3, but instead write directly to the final destination.
+## Rename not behaving as "expected"
+
+S3 is not a filesystem. The S3A connector mimics rename by
+
+* HEAD then LIST of source path
+* HEAD then LIST of destination path
+* File-by-file copy of source objects to destination.
+ Parallelized, with page listings of directory objects and issuing of DELETE
requests.
+* Post-delete recreation of destination parent directory marker, if needed.
Review comment:
oops. fixed
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