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https://issues.apache.org/jira/browse/BEAM-257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi resolved BEAM-257.
-------------------------------
Resolution: Fixed
Fix Version/s: 0.1.0-incubating
https://github.com/apache/incubator-beam/pull/290
> fix ConcurrentModificationException in KafkaIO
> ----------------------------------------------
>
> Key: BEAM-257
> URL: https://issues.apache.org/jira/browse/BEAM-257
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-extensions
> Reporter: Raghu Angadi
> Assignee: Raghu Angadi
> Fix For: 0.1.0-incubating
>
>
> [~tgroh] reported the following exception with KafkaIO while using with
> DirectRunner. Fixing it in https://github.com/apache/incubator-beam/pull/290
> {code}
> java.util.ConcurrentModificationException: KafkaConsumer is not safe for
> multi-threaded access
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.acquire(KafkaConsumer.java:1324)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:1255)
> at com.google.common.io.Closeables.close(Closeables.java:79)
> at
> org.apache.beam.sdk.io.kafka.KafkaIO$UnboundedKafkaReader.close(KafkaIO.java:1050)
> at
> org.apache.beam.runners.direct.UnboundedReadEvaluatorFactory$UnboundedReadEvaluator.finishBundle(UnboundedReadEvaluatorFactory.java:167)
> at
> org.apache.beam.runners.direct.TransformExecutor.finishBundle(TransformExecutor.java:161)
> at
> org.apache.beam.runners.direct.TransformExecutor.call(TransformExecutor.java:116)
> at
> org.apache.beam.runners.direct.TransformExecutor.call(TransformExecutor.java:41)
> at java.util.concurrent.FutureTask.run(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
> {code}
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