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https://issues.apache.org/jira/browse/KAFKA-1964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jun Rao updated KAFKA-1964:
---------------------------
    Attachment: stack.out

Saw the test hang once in trunk. Attached is the full stacktrace.

"Test worker" prio=5 tid=7ffeb4105000 nid=0x116acd000 runnable [116aca000]
   java.lang.Thread.State: RUNNABLE
        at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
        at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:136)
        at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:69)
        at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
        - locked <7f548be50> (a sun.nio.ch.Util$2)
        - locked <7f548be38> (a java.util.Collections$UnmodifiableSet)
        - locked <7f5420990> (a sun.nio.ch.KQueueSelectorImpl)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
        at org.apache.kafka.common.network.Selector.select(Selector.java:375)
        at org.apache.kafka.common.network.Selector.poll(Selector.java:220)
        at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:209)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.awaitMetadataUpdate(KafkaConsumer.java:956)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.listOffset(KafkaConsumer.java:1353)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.resetOffset(KafkaConsumer.java:1423)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.fetchMissingPositionsOrResetThem(KafkaConsumer.java:1305)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:700)
        - locked <7f548d990> (a org.apache.kafka.clients.consumer.KafkaConsumer)
        at 
kafka.api.ConsumerTest.testPartitionReassignmentCallback(ConsumerTest.scala:239)


>  testPartitionReassignmentCallback hangs occasionally
> -----------------------------------------------------
>
>                 Key: KAFKA-1964
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1964
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.8.3
>            Reporter: Jun Rao
>         Attachments: stack.out
>
>




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