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From "Neha Narkhede (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-212) IllegalThreadStateException in topic watcher for Kafka mirroring
Date Thu, 01 Dec 2011 01:05:39 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Neha Narkhede updated KAFKA-212:
--------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

Fix is committed
                
> IllegalThreadStateException in topic watcher for Kafka mirroring
> ----------------------------------------------------------------
>
>                 Key: KAFKA-212
>                 URL: https://issues.apache.org/jira/browse/KAFKA-212
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Neha Narkhede
>            Assignee: Neha Narkhede
>             Fix For: 0.7.1
>
>         Attachments: KAFKA-212.patch
>
>
> If the kafka mirroring embedded consumer receives a new topic watcher notification, it
runs into the following exception 
> [2011-11-23 02:49:15,612] FATAL java.lang.IllegalThreadStateException (kafka.consumer.ZookeeperTopicEventWatcher)
> [2011-11-23 02:49:15,612] FATAL java.lang.IllegalThreadStateException
>         at java.lang.Thread.start(Thread.java:595)
>         at kafka.server.EmbeddedConsumer$$anonfun$startNewConsumerThreads$3.apply(KafkaServerStartable.scala:142)
>         at kafka.server.EmbeddedConsumer$$anonfun$startNewConsumerThreads$3.apply(KafkaServerStartable.scala:142)
>         at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:61)
>         at scala.collection.immutable.List.foreach(List.scala:45)
>         at kafka.server.EmbeddedConsumer.startNewConsumerThreads(KafkaServerStartable.scala:142)
>         at kafka.server.EmbeddedConsumer.handleTopicEvent(KafkaServerStartable.scala:109)
>         at kafka.consumer.ZookeeperTopicEventWatcher$ZkTopicEventListener.liftedTree2$1(ZookeeperTopicEventWatcher.scala:83)
>         at kafka.consumer.ZookeeperTopicEventWatcher$ZkTopicEventListener.handleChildChange(ZookeeperTopicEventWatcher.scala:78)
>         at org.I0Itec.zkclient.ZkClient$7.run(ZkClient.java:568)
>         at org.I0Itec.zkclient.ZkEventThread.run(ZkEventThread.java:71)
>  (kafka.consumer.ZookeeperTopicEventWatcher)
> This happens since it tries to start a thread which has finished executing

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