Github user schonfeld commented on the pull request: https://github.com/apache/storm/pull/745#issuecomment-141595905 Ah, ok! Here's what it looked like in our logs, just in case someone else tries to Google the exception at some point... ``` 2015-09-17 15:03:22 b.s.m.n.StormClientHandler [INFO] Connection failed Netty-Client-/10.244.114.24:6703 java.lang.NullPointerException at backtype.storm.messaging.netty.Client.flushMessages(Client.java:320) ~[storm-core-0.10.1-SNAPSHOT.jar:0.10.1-SNAPSHOT] at backtype.storm.messaging.netty.Client.notifyInterestChanged(Client.java:455) ~[storm-core-0.10.1-SNAPSHOT.jar:0.10.1-SNAPSHOT] at backtype.storm.messaging.netty.StormClientHandler.channelInterestChanged(StormClientHandler.java:36) ~[storm-core-0.10.1-SNAPSHOT.jar:0.10.1-SNAPSHOT] at org.apache.storm.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:106) ~[storm-core-0.10.1-SNAPSHOT.jar:0.10.1-SNAPSHOT] ```
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