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https://issues.apache.org/jira/browse/KAFKA-2585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14934105#comment-14934105
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ASF GitHub Bot commented on KAFKA-2585:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/247
> ConsoleConsumer should not hang infinitely upon exception
> ---------------------------------------------------------
>
> Key: KAFKA-2585
> URL: https://issues.apache.org/jira/browse/KAFKA-2585
> Project: Kafka
> Issue Type: Bug
> Reporter: Dong Lin
> Assignee: Dong Lin
> Fix For: 0.9.0.0
>
>
> Due to imcompatibility beween Java 1.7 and Java 1.8, if Kafka ConsoleConsumer
> was compiled by Java 1.8 but run by Java 1.7, and if ConsoleConsumer has
> consumer.timeout.ms in the consumer.properties, then when it timesout, it
> will throw the following exception and hang infinitely.
> This will cause problem for e.g. Ducktape system test, which currently runs
> consumer with Java 1.7 and waits for consumer to timeout. This bug causes the
> Ducktape to hang for a long time.
> To prevent ConsoleConsumer to hang in case of such exception, we can wrap
> try/catch around run() and do System.exit(0) at the end of main() in
> ConsoleConsumer.
> [2015-09-28 05:41:31,499] ERROR Error processing message, stopping consumer:
> (kafka.tools.ConsoleConsumer$)
> kafka.consumer.ConsumerTimeoutException
> at kafka.consumer.ConsumerIterator.makeNext(ConsumerIterator.scala:69)
> at kafka.consumer.ConsumerIterator.makeNext(ConsumerIterator.scala:33)
> at
> kafka.utils.IteratorTemplate.maybeComputeNext(IteratorTemplate.scala:66)
> at kafka.utils.IteratorTemplate.hasNext(IteratorTemplate.scala:58)
> at kafka.utils.IteratorTemplate.next(IteratorTemplate.scala:38)
> at kafka.consumer.ConsumerIterator.next(ConsumerIterator.scala:46)
> at kafka.consumer.OldConsumer.receive(BaseConsumer.scala:70)
> at kafka.tools.ConsoleConsumer$.process(ConsoleConsumer.scala:94)
> at kafka.tools.ConsoleConsumer$.run(ConsoleConsumer.scala:57)
> at kafka.tools.ConsoleConsumer$.main(ConsoleConsumer.scala:41)
> at kafka.tools.ConsoleConsumer.main(ConsoleConsumer.scala)
> Processed a total of 78 messages
> Exception in thread "main" java.lang.NoSuchMethodError:
> java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView;
> at kafka.utils.Pool.keys(Pool.scala:77)
> at
> kafka.consumer.FetchRequestAndResponseStatsRegistry$.removeConsumerFetchRequestAndResponseStats(FetchRequestAndResponseStats.scala:69)
> at
> kafka.metrics.KafkaMetricsGroup$.removeAllConsumerMetrics(KafkaMetricsGroup.scala:189)
> at
> kafka.consumer.ZookeeperConsumerConnector.shutdown(ZookeeperConsumerConnector.scala:202)
> at kafka.consumer.OldConsumer.stop(BaseConsumer.scala:75)
> at kafka.tools.ConsoleConsumer$.process(ConsoleConsumer.scala:98)
> at kafka.tools.ConsoleConsumer$.run(ConsoleConsumer.scala:57)
> at kafka.tools.ConsoleConsumer$.main(ConsoleConsumer.scala:41)
> at kafka.tools.ConsoleConsumer.main(ConsoleConsumer.scala)
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