[KAFKA-5587] Processor got uncaught exception: NullPointerException

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.10.1.1, 0.10.2.1
• Fix Version/s: 0.11.0.1, 1.0.0
• Component/s: core
• Assignee: Rajini Sivaram
• Reporter: Dan
• Created: 13/Jul/17 06:45
• Updated: 03/Aug/18 08:08
• Resolved: 17/Jul/17 23:04

Description

[2017-07-12 21:56:39,964] ERROR Processor got uncaught exception. (kafka.network.Processor)
java.lang.NullPointerException
at kafka.network.Processor$$anonfun$processCompletedReceives$1.apply(SocketServer.scala:490)
at kafka.network.Processor$$anonfun$processCompletedReceives$1.apply(SocketServer.scala:487)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at kafka.network.Processor.processCompletedReceives(SocketServer.scala:487)
at kafka.network.Processor.run(SocketServer.scala:417)
at java.lang.Thread.run(Thread.java:745)

Anyone knows the cause of this exception? What's the effect of it?
When this exception occurred, the log also showed that the broker was frequently shrinking ISR to itself. Are these two things interrelated?

Issue Links

• links to: GitHub Pull Request #3526