Github user revans2 commented on the pull request:
https://github.com/apache/storm/pull/442#issuecomment-76253245
When I run a topology with acing actually turned on I get the following in
the nimbus log in response to trying to view the UI page. The topology seems to
be running just fine though.
```
2015-02-26T13:38:38.319-0600 o.a.t.s.AbstractNonblockingServer$FrameBuffer
[ERROR] Unexpected throwable while invoking!
java.lang.ClassCastException: clojure.lang.PersistentVector cannot be cast
to java.lang.String
at
backtype.storm.generated.SpoutStats$SpoutStatsStandardScheme.write(SpoutStats.java:929)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.SpoutStats$SpoutStatsStandardScheme.write(SpoutStats.java:702)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at backtype.storm.generated.SpoutStats.write(SpoutStats.java:616)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.ExecutorSpecificStats.standardSchemeWriteValue(ExecutorSpecificStats.java:220)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
org.apache.thrift7.TUnion$TUnionStandardScheme.write(TUnion.java:244)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
org.apache.thrift7.TUnion$TUnionStandardScheme.write(TUnion.java:213)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at org.apache.thrift7.TUnion.write(TUnion.java:152)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.ExecutorStats$ExecutorStatsStandardScheme.write(ExecutorStats.java:705)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.ExecutorStats$ExecutorStatsStandardScheme.write(ExecutorStats.java:563)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.ExecutorStats.write(ExecutorStats.java:489)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.ExecutorSummary$ExecutorSummaryStandardScheme.write(ExecutorSummary.java:862)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.ExecutorSummary$ExecutorSummaryStandardScheme.write(ExecutorSummary.java:763)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.ExecutorSummary.write(ExecutorSummary.java:655)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.TopologyInfo$TopologyInfoStandardScheme.write(TopologyInfo.java:1118)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.TopologyInfo$TopologyInfoStandardScheme.write(TopologyInfo.java:976)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.TopologyInfo.write(TopologyInfo.java:848)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.Nimbus$getTopologyInfoWithOpts_result$getTopologyInfoWithOpts_resultStandardScheme.write(Nimbus.java:18525)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.Nimbus$getTopologyInfoWithOpts_result$getTopologyInfoWithOpts_resultStandardScheme.write(Nimbus.java:18471)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.generated.Nimbus$getTopologyInfoWithOpts_result.write(Nimbus.java:18406)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
org.apache.thrift7.ProcessFunction.process(ProcessFunction.java:53)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
org.apache.thrift7.TBaseProcessor.process(TBaseProcessor.java:39)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
backtype.storm.security.auth.SimpleTransportPlugin$SimpleWrapProcessor.process(SimpleTransportPlugin.java:156)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
org.apache.thrift7.server.AbstractNonblockingServer$FrameBuffer.invoke(AbstractNonblockingServer.java:518)
~[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at org.apache.thrift7.server.Invocation.run(Invocation.java:18)
[storm-core-0.10.0-SNAPSHOT.jar:0.10.0-SNAPSHOT]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[na:1.8.0]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0]
at java.lang.Thread.run(Thread.java:744) [na:1.8.0]
```
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