Github user tedxia commented on the pull request:
https://github.com/apache/storm/pull/268#issuecomment-64768289
@clockfly connect and send are all synchronized, this may also cause block.
Think about this:
1. Worker A send message to B and C, but B had been crashed, so we start
reconnect in scheduler(this will not schedule until send finished), send data
to C;
2. Worker A start reconnect to B, this will use a lot of time;
3. Worker A send message to B again, this will block until reconnect to B
finish, this will also block send message to other worker;
##### The biggest problem for this is we got sleep in connect, this will
cause long time competition, I will try to fix this.
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