steveloughran commented on issue #621: HADOOP-16090 S3A Client to add explicit support for versioned stores. URL: https://github.com/apache/hadoop/pull/621#issuecomment-479677374 On the ASF JIRA, it's being reported that testing this for Flink checkpointing is generating enough HEAD requests that writes are being throttled. DELETE calls aren't throttled, see, whereas the poll & delete operation was doing 1 HEAD/entry. I wonder if we could be more minimal and only look for a fake directory marker in the parent, so 1 HEAD per write only.
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