Github user HeartSaVioR commented on the pull request: https://github.com/apache/storm/pull/521#issuecomment-101825293 @d2r Modified TransferDrainer to re-group messages by destination when send has called. I left TransferDrainer.add() cause it plays as buffer, but I'm ready to remove Transfer.add() when we think it's better to have other buffer. I've done upmerging, and ran unit tests with no issue.
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