Joel Koshy created KAFKA-880:
--------------------------------
Summary: NoLeaderPartitionSet should be cleared before leader
finder thread is started up
Key: KAFKA-880
URL: https://issues.apache.org/jira/browse/KAFKA-880
Project: Kafka
Issue Type: Bug
Affects Versions: 0.8
Reporter: Joel Koshy
Fix For: 0.8
This was a recent regression.
This could prevent the consumer from progressing because fetchers for the
currently owned partitions may not be added (depending on the order that the
map iterator yields).
I think the fix should be simple - just clear the set after stopping the leader
finder thread and stopping fetchers.
{code}
[2013-04-25 17:06:38,377] WARN
[sometopic-somehost-1366909575615-f801367d-leader-finder-thread]
, Failed to find leader for Set([sometopic,11], [sometopic,25], [sometopic,24])
(kafka.consumer.ConsumerFetcherManager$Lead
erFinderThread)
java.util.NoSuchElementException: key not found: [sometopic,24]
at scala.collection.MapLike$class.default(MapLike.scala:223)
at scala.collection.immutable.Map$Map2.default(Map.scala:110)
at scala.collection.MapLike$class.apply(MapLike.scala:134)
at scala.collection.immutable.Map$Map2.apply(Map.scala:110)
at
kafka.consumer.ConsumerFetcherManager$LeaderFinderThread$$anonfun$doWork$4.apply(ConsumerFetcherManager.scala:81)
at
kafka.consumer.ConsumerFetcherManager$LeaderFinderThread$$anonfun$doWork$4.apply(ConsumerFetcherManager.scala:79)
at
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:80)
at
scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:80)
at scala.collection.Iterator$class.foreach(Iterator.scala:631)
at
scala.collection.mutable.HashTable$$anon$1.foreach(HashTable.scala:161)
at
scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:194)
at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:39)
at scala.collection.mutable.HashMap.foreach(HashMap.scala:80)
at
kafka.consumer.ConsumerFetcherManager$LeaderFinderThread.doWork(ConsumerFetcherManager.scala:79)
at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:51)
{code}
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