[KAFKA-1815] ServerShutdownTest fails in trunk.

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.9.0.0
• Assignee: Anatoly Fayngelerin
• Reporter: Anatoly Fayngelerin
• Created: 09/Dec/14 16:44
• Updated: 13/Dec/14 16:10
• Resolved: 12/Dec/14 19:39

Description

I ran into these failures consistently when trying to build Kafka locally:

kafka.server.ServerShutdownTest > testCleanShutdown FAILED
java.lang.NullPointerException
at kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
at kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
at scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:114)
at scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:113)
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:105)
at scala.collection.TraversableOnce$class.count(TraversableOnce.scala:113)
at scala.collection.mutable.ArrayOps$ofRef.count(ArrayOps.scala:105)
at kafka.server.ServerShutdownTest.verifyNonDaemonThreadsStatus(ServerShutdownTest.scala:147)
at kafka.server.ServerShutdownTest.testCleanShutdown(ServerShutdownTest.scala:101)

kafka.server.ServerShutdownTest > testCleanShutdownWithDeleteTopicEnabled FAILED
java.lang.NullPointerException
at kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
at kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
at scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:114)
at scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:113)
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:105)
at scala.collection.TraversableOnce$class.count(TraversableOnce.scala:113)
at scala.collection.mutable.ArrayOps$ofRef.count(ArrayOps.scala:105)
at kafka.server.ServerShutdownTest.verifyNonDaemonThreadsStatus(ServerShutdownTest.scala:147)
at kafka.server.ServerShutdownTest.testCleanShutdownWithDeleteTopicEnabled(ServerShutdownTest.scala:114)

kafka.server.ServerShutdownTest > testCleanShutdownAfterFailedStartup FAILED
java.lang.NullPointerException
at kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
at kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
at scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:114)
at scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:113)
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:105)
at scala.collection.TraversableOnce$class.count(TraversableOnce.scala:113)
at scala.collection.mutable.ArrayOps$ofRef.count(ArrayOps.scala:105)
at kafka.server.ServerShutdownTest.verifyNonDaemonThreadsStatus(ServerShutdownTest.scala:147)
at kafka.server.ServerShutdownTest.testCleanShutdownAfterFailedStartup(ServerShutdownTest.scala:141)

It looks like Jenkins also had issues with these tests:

https://builds.apache.org/job/Kafka-trunk/351/console

I would like to provide a patch that fixes this.