can I get a review/feedback on, S3A block output streams don't delete temporary files in multipart uploads" https://issues.apache.org/jira/browse/HADOOP-14028
...this is pretty serious, and I'd like to get it into 2.8.0, for which I need reviewers. Tested against AWS S3, with a test which uses some new instrumentation to even verify that blocks are being released. thanks -Steve
