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https://issues.apache.org/jira/browse/STORM-1687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15228581#comment-15228581
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ASF GitHub Bot commented on STORM-1687:
---------------------------------------
Github user redsanket commented on the pull request:
https://github.com/apache/storm/pull/1312#issuecomment-206451182
+1
> Divide by zero exception in stats
> ---------------------------------
>
> Key: STORM-1687
> URL: https://issues.apache.org/jira/browse/STORM-1687
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-core
> Affects Versions: 1.0.0, 2.0.0
> Reporter: Zhuo Liu
> Assignee: Zhuo Liu
> Fix For: 1.0.0, 2.0.0
>
>
> Since uptime can be 0, this will cause ArithmeticException: Divide by zero in
> compute-agg-capacity.
> This will happen for both stats.clj in 1.x and StatsUtil.java in master (2.0).
> {noformat}
> java.lang.ArithmeticException: Divide by zero
> at clojure.lang.Numbers.divide(Numbers.java:156)
> at clojure.core$SLASH.invoke(core.clj:986)
> at clojure.lang.AFn.applyToHelper(AFn.java:156)
> at clojure.lang.RestFn.applyTo(RestFn.java:132)
> at clojure.core$apply.invoke(core.clj:626)
> at backtype.storm.util$div.doInvoke(util.clj:355)
> at clojure.lang.RestFn.invoke(RestFn.java:423)
> at backtype.storm.stats$compute_agg_capacity$fn__2249.invoke(stats.clj:409)
> at backtype.storm.stats$compute_agg_capacity.invoke(stats.clj:404)
> at backtype.storm.stats$agg_pre_merge_topo_page_bolt.invoke(stats.clj:555)
> at backtype.storm.stats$agg_topo_exec_stats_STAR_.invoke(stats.clj:724)
> at backtype.storm.stats$fn__2319.invoke(stats.clj:772)
> at clojure.lang.MultiFn.invoke(MultiFn.java:241)
> at clojure.lang.AFn.applyToHelper(AFn.java:165)
> at clojure.lang.AFn.applyTo(AFn.java:144)
> at clojure.core$apply.invoke(core.clj:628)
> at clojure.core$partial$fn__4230.doInvoke(core.clj:2470)
> at clojure.lang.RestFn.invoke(RestFn.java:421)
> at clojure.core.protocols$fn__6086.invoke(protocols.clj:143)
> at clojure.core.protocols$fn_6057$G6052_6066.invoke(protocols.clj:19)
> at clojure.core.protocols$seq_reduce.invoke(protocols.clj:31)
> at clojure.core.protocols$fn__6078.invoke(protocols.clj:54)
> at clojure.core.protocols$fn_6031$G6026_6044.invoke(protocols.clj:13)
> at clojure.core$reduce.invoke(core.clj:6289)
> at backtype.storm.stats$aggregate_topo_stats.invoke(stats.clj:854)
> at backtype.storm.stats$agg_topo_execs_stats.invoke(stats.clj:1008)
> at
> backtype.storm.daemon.nimbus$fn_5838$exec_fn1478auto$reify_5862.getTopologyPageInfo(nimbus.clj:1729)
> at
> backtype.storm.generated.Nimbus$Processor$getTopologyPageInfo.getResult(Nimbus.java:3651)
> at
> backtype.storm.generated.Nimbus$Processor$getTopologyPageInfo.getResult(Nimbus.java:3635)
> at org.apache.thrift7.ProcessFunction.process(ProcessFunction.java:39)
> at org.apache.thrift7.TBaseProcessor.process(TBaseProcessor.java:39)
> at
> backtype.storm.security.auth.SaslTransportPlugin$TUGIWrapProcessor.process(SaslTransportPlugin.java:143)
> at
> org.apache.thrift7.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:286)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
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