Stig Rohde Døssing created STORM-3166:
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Summary: Utils.threadDump does not account for dead threads
Key: STORM-3166
URL: https://issues.apache.org/jira/browse/STORM-3166
Project: Apache Storm
Issue Type: Bug
Components: storm-core
Affects Versions: 2.0.0
Reporter: Stig Rohde Døssing
Assignee: Stig Rohde Døssing
Saw this test failure
{code}
classname: integration.org.apache.storm.integration-test / testname:
test-validate-topology-structure
Uncaught exception, not in assertion.
expected: nil
actual: java.lang.NullPointerException: null
at org.apache.storm.utils.Utils.threadDump (Utils.java:1191)
org.apache.storm.Testing.whileTimeout (Testing.java:107)
org.apache.storm.Testing.completeTopology (Testing.java:437)
integration.org.apache.storm.integration_test$try_complete_wc_topology.invoke
(integration_test.clj:247)
integration.org.apache.storm.integration_test/fn (integration_test.clj:259)
clojure.test$test_var$fn__7670.invoke (test.clj:704)
clojure.test$test_var.invoke (test.clj:704)
clojure.test$test_vars$fn__7692$fn__7697.invoke (test.clj:722)
clojure.test$default_fixture.invoke (test.clj:674)
clojure.test$test_vars$fn__7692.invoke (test.clj:722)
clojure.test$default_fixture.invoke (test.clj:674)
clojure.test$test_vars.invoke (test.clj:718)
clojure.test$test_all_vars.invoke (test.clj:728)
clojure.test$test_ns.invoke (test.clj:747)
clojure.core$map$fn__4553.invoke (core.clj:2624)
clojure.lang.LazySeq.sval (LazySeq.java:40)
clojure.lang.LazySeq.seq (LazySeq.java:49)
clojure.lang.Cons.next (Cons.java:39)
clojure.lang.RT.boundedLength (RT.java:1735)
clojure.lang.RestFn.applyTo (RestFn.java:130)
clojure.core$apply.invoke (core.clj:632)
clojure.test$run_tests.doInvoke (test.clj:762)
clojure.lang.RestFn.invoke (RestFn.java:408)
org.apache.storm.testrunner$eval5125$iter__5126__5130$fn__5131$fn__5132$fn__5133.invoke
(test_runner.clj:107)
org.apache.storm.testrunner$eval5125$iter__5126__5130$fn__5131$fn__5132.invoke
(test_runner.clj:53)
org.apache.storm.testrunner$eval5125$iter__5126__5130$fn__5131.invoke
(test_runner.clj:52)
clojure.lang.LazySeq.sval (LazySeq.java:40)
clojure.lang.LazySeq.seq (LazySeq.java:49)
clojure.lang.RT.seq (RT.java:507)
clojure.core/seq (core.clj:137)
clojure.core$dorun.invoke (core.clj:3009)
org.apache.storm.testrunner$eval5125.invoke (test_runner.clj:52)
clojure.lang.Compiler.eval (Compiler.java:6782)
clojure.lang.Compiler.load (Compiler.java:7227)
clojure.lang.Compiler.loadFile (Compiler.java:7165)
clojure.main$load_script.invoke (main.clj:275)
clojure.main$script_opt.invoke (main.clj:337)
clojure.main$main.doInvoke (main.clj:421)
clojure.lang.RestFn.invoke (RestFn.java:421)
clojure.lang.Var.invoke (Var.java:383)
clojure.lang.AFn.applyToHelper (AFn.java:156)
clojure.lang.Var.applyTo (Var.java:700)
clojure.main.main (main.java:37)
{code}
Utils.threadDump needs to check whether ThreadInfo objects are null before
trying to dereference them, since the ThreadMxBean.getThreadInfo method will
return null for threads that are dead.
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