Ashish K Singh created KAFKA-2466:
-------------------------------------
Summary: ConsoleConsumer throws ConcurrentModificationException on
termination
Key: KAFKA-2466
URL: https://issues.apache.org/jira/browse/KAFKA-2466
Project: Kafka
Issue Type: Bug
Components: tools
Reporter: Ashish K Singh
Assignee: Ashish K Singh
ConsoleConsumer throws ConcurrentModificationException on termination.
ST:
{code}
Exception in thread "Thread-1" java.util.ConcurrentModificationException:
KafkaConsumer is not safe for multi-threaded access
at
org.apache.kafka.clients.consumer.KafkaConsumer.acquire(KafkaConsumer.java:1169)
at
org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:1087)
at kafka.consumer.NewShinyConsumer.close(BaseConsumer.scala:50)
at kafka.tools.ConsoleConsumer$$anon$1.run(ConsoleConsumer.scala:74)
{code}
Other thread which constantly tries to consume is
{code}
"main" prio=10 tid=0x00007f3aa800c000 nid=0x1314 runnable [0x00007f3aae37d000]
java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:87)
- locked <0x00000000dd1df130> (a sun.nio.ch.Util$2)
- locked <0x00000000dd1df120> (a java.util.Collections$UnmodifiableSet)
- locked <0x00000000dd0af720> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:98)
at org.apache.kafka.common.network.Selector.select(Selector.java:440)
at org.apache.kafka.common.network.Selector.poll(Selector.java:263)
at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:221)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.clientPoll(ConsumerNetworkClient.java:274)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:182)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:172)
at
org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:779)
at
org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:730)
at kafka.consumer.NewShinyConsumer.receive(BaseConsumer.scala:43)
at kafka.tools.ConsoleConsumer$.process(ConsoleConsumer.scala:87)
at kafka.tools.ConsoleConsumer$.run(ConsoleConsumer.scala:54)
at kafka.tools.ConsoleConsumer$.main(ConsoleConsumer.scala:39)
at kafka.tools.ConsoleConsumer.main(ConsoleConsumer.scala)
{code}
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