[
https://issues.apache.org/jira/browse/KAFKA-2133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14502028#comment-14502028
]
Alexey Ozeritskiy commented on KAFKA-2133:
------------------------------------------
We've set it to 128. I think that default Int.MaxValue is dangerous due to
posible memory issues.
> Deadlock in DeleteTopicsThread
> ------------------------------
>
> Key: KAFKA-2133
> URL: https://issues.apache.org/jira/browse/KAFKA-2133
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.2.1
> Reporter: Alexey Ozeritskiy
> Priority: Critical
>
> Controller hangs after deleting multiple topics.
> jstack:
> 1. delete-topics-thread acquired controllerLock and waiting for blocking
> queue:
> {code}
> "delete-topics-thread-2" prio=10 tid=0x00007f3a8d4e4000 nid=0x6924 waiting on
> condition [0x00007f3507684000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x000000047196e738> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> at
> java.util.concurrent.LinkedBlockingQueue.put(LinkedBlockingQueue.java:349)
> at
> kafka.controller.ControllerChannelManager.sendRequest(ControllerChannelManager.scala:57)
> - locked <0x000000045eab3078> (a java.lang.Object)
> at
> kafka.controller.KafkaController.sendRequest(KafkaController.scala:668)
> at
> kafka.controller.ControllerBrokerRequestBatch$$anonfun$sendRequestsToBrokers$2.apply(ControllerChannelManager.scala:299)
> at
> kafka.controller.ControllerBrokerRequestBatch$$anonfun$sendRequestsToBrokers$2.apply(ControllerChannelManager.scala:291)
> at
> scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:98)
> at
> scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:98)
> at
> scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:226)
> at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:39)
> at scala.collection.mutable.HashMap.foreach(HashMap.scala:98)
> at
> kafka.controller.ControllerBrokerRequestBatch.sendRequestsToBrokers(ControllerChannelManager.scala:291)
> at
> kafka.controller.KafkaController.sendUpdateMetadataRequest(KafkaController.scala:976)
> at
> kafka.controller.TopicDeletionManager.kafka$controller$TopicDeletionManager$$onTopicDeletion(TopicDeletionManager.scala:303)
> at
> kafka.controller.TopicDeletionManager$DeleteTopicsThread$$anonfun$doWork$1$$anonfun$apply$mcV$sp$4.apply(TopicDeletionManager.scala:424)
> at
> kafka.controller.TopicDeletionManager$DeleteTopicsThread$$anonfun$doWork$1$$anonfun$apply$mcV$sp$4.apply(TopicDeletionManager.scala:396)
> at
> scala.collection.immutable.HashSet$HashSet1.foreach(HashSet.scala:153)
> at
> scala.collection.immutable.HashSet$HashTrieSet.foreach(HashSet.scala:306)
> at
> kafka.controller.TopicDeletionManager$DeleteTopicsThread$$anonfun$doWork$1.apply$mcV$sp(TopicDeletionManager.scala:396)
> at
> kafka.controller.TopicDeletionManager$DeleteTopicsThread$$anonfun$doWork$1.apply(TopicDeletionManager.scala:390)
> at
> kafka.controller.TopicDeletionManager$DeleteTopicsThread$$anonfun$doWork$1.apply(TopicDeletionManager.scala:390)
> at kafka.utils.Utils$.inLock(Utils.scala:535)
> at
> kafka.controller.TopicDeletionManager$DeleteTopicsThread.doWork(TopicDeletionManager.scala:390)
> at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:60)
> {code}
> 2. Controller-2-to-broker waiting for controllerLock and cannot take messages
> from blocking queue:
> {code}
> "Controller-2-to-broker-3-send-thread" prio=10 tid=0x00007f3a8d4a3000
> nid=0x64d1 waiting on condition [0x00007f3507786000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x0000000468babde8> (a
> java.util.concurrent.locks.ReentrantLock$NonfairSync)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:867)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1197)
> at
> java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:214)
> at
> java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:290)
> at kafka.utils.Utils$.inLock(Utils.scala:533)
> at
> kafka.controller.TopicDeletionManager.kafka$controller$TopicDeletionManager$$deleteTopicStopReplicaCallback(TopicDeletionManager.scala:371)
> at
> kafka.controller.TopicDeletionManager$$anonfun$startReplicaDeletion$2$$anonfun$apply$3.apply(TopicDeletionManager.scala:338)
> at
> kafka.controller.TopicDeletionManager$$anonfun$startReplicaDeletion$2$$anonfun$apply$3.apply(TopicDeletionManager.scala:338)
> at
> kafka.controller.ControllerBrokerRequestBatch$$anonfun$addStopReplicaRequestForBrokers$2$$anonfun$apply$mcVI$sp$2.apply(ControllerChannelManager.scala:229)
> at
> kafka.controller.ControllerBrokerRequestBatch$$anonfun$addStopReplicaRequestForBrokers$2$$anonfun$apply$mcVI$sp$2.apply(ControllerChannelManager.scala:229)
> at
> kafka.controller.RequestSendThread.doWork(ControllerChannelManager.scala:160)
> - locked <0x000000045ea2fec8> (a java.lang.Object)
> at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:60)
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
