[STORM-2067] "array element type mismatch" from compute-executors in nimbus.clj

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: storm-core
• Assignee: Jungtaek Lim
• Reporter: Jungtaek Lim
• Created: 29/Aug/16 23:55
• Updated: 13/Sep/16 04:49
• Resolved: 13/Sep/16 04:49

Description

In some scenarios, Nimbus throws "java.lang.IllegalArgumentException: array element type mismatch".

08:49:35.321 [timer] ERROR o.a.s.d.nimbus - Error when processing event
java.lang.IllegalArgumentException: array element type mismatch
	at java.lang.reflect.Array.set(Native Method) ~[?:1.8.0_66]
	at clojure.lang.RT.seqToTypedArray(RT.java:1719) ~[clojure-1.7.0.jar:?]
	at clojure.lang.RT.seqToTypedArray(RT.java:1692) ~[clojure-1.7.0.jar:?]
	at clojure.core$into_array.invoke(core.clj:3319) ~[clojure-1.7.0.jar:?]
	at org.apache.storm.daemon.nimbus$compute_executors$fn__4307.doInvoke(nimbus.clj:645) ~[classes/:?]
	at clojure.lang.RestFn.invoke(RestFn.java:408) ~[clojure-1.7.0.jar:?]
	at org.apache.storm.daemon.nimbus$compute_executors.invoke(nimbus.clj:645) ~[classes/:?]
	at org.apache.storm.daemon.nimbus$compute_executor__GT_component.invoke(nimbus.clj:655) ~[classes/:?]
	at org.apache.storm.daemon.nimbus$read_topology_details.invoke(nimbus.clj:565) ~[classes/:?]
	at org.apache.storm.daemon.nimbus$mk_assignments$iter__4668__4672$fn__4673.invoke(nimbus.clj:967) ~[classes/:?]
	at clojure.lang.LazySeq.sval(LazySeq.java:40) ~[clojure-1.7.0.jar:?]
	at clojure.lang.LazySeq.seq(LazySeq.java:49) ~[clojure-1.7.0.jar:?]
	at clojure.lang.RT.seq(RT.java:507) ~[clojure-1.7.0.jar:?]
	at clojure.core$seq__4128.invoke(core.clj:137) ~[clojure-1.7.0.jar:?]
	at clojure.core.protocols$seq_reduce.invoke(protocols.clj:30) ~[clojure-1.7.0.jar:?]
	at clojure.core.protocols$fn__6506.invoke(protocols.clj:101) ~[clojure-1.7.0.jar:?]
	at clojure.core.protocols$fn__6452$G__6447__6465.invoke(protocols.clj:13) ~[clojure-1.7.0.jar:?]
	at clojure.core$reduce.invoke(core.clj:6519) ~[clojure-1.7.0.jar:?]
	at clojure.core$into.invoke(core.clj:6600) ~[clojure-1.7.0.jar:?]
	at org.apache.storm.daemon.nimbus$mk_assignments.doInvoke(nimbus.clj:966) ~[classes/:?]
	at clojure.lang.RestFn.invoke(RestFn.java:410) ~[clojure-1.7.0.jar:?]
	at org.apache.storm.daemon.nimbus$fn__5354$exec_fn__579__auto____5355$fn__5366$fn__5367.invoke(nimbus.clj:2409) ~[classes/:?]
	at org.apache.storm.daemon.nimbus$fn__5354$exec_fn__579__auto____5355$fn__5366.invoke(nimbus.clj:2408) ~[classes/:?]
	at clojure.lang.AFn.run(AFn.java:22) ~[clojure-1.7.0.jar:?]
	at org.apache.storm.StormTimer$1.run(StormTimer.java:190) ~[classes/:?]
	at org.apache.storm.StormTimer$StormTimerTask.run(StormTimer.java:83) [classes/:?]

The exception is thrown from into-array, which is called from below line:

((fn [ & maps ] (Utils/joinMaps (into-array (into [component->executors] maps)))))

Issue Links

• links to: GitHub Pull Request #1655