Github user HeartSaVioR commented on the pull request: https://github.com/apache/storm/pull/750#issuecomment-142443503 @revans2 I ran performance test from small cluster (three machines, each one has zookeeper and supervisor, and only one has zookeeper, nimbus, supervisor) with configuration below, > com.yahoo.storm.perftest.Main --ack --bolt 4 --name test -l 1 -n 1 --workers 4 --spout 3 --testTimeSec 900 -c topology.max.spout.pending=1092 --messageSize 10 Unfortunately I'm seeing failed tuples again. <img width="1264" alt="storm-ui-failed-tuple-appeared" src="https://cloud.githubusercontent.com/assets/1317309/10033834/d29c01d0-61c6-11e5-8cfd-381c693b1978.png"> I packaged perf test with 0.10.0-rc of storm-core, but I think it doesn't matter cause its scope is provided. I still don't know why this happens. According to log files, there's no Netty connection issue. Could you test it too?
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