Jason Gustafson created KAFKA-2990:
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Summary: NoSuchMethodError when Kafka is compiled with 1.8 and run
on 1.7
Key: KAFKA-2990
URL: https://issues.apache.org/jira/browse/KAFKA-2990
Project: Kafka
Issue Type: Bug
Reporter: Jason Gustafson
Assignee: Jason Gustafson
I saw the following exception in the server logs when Kafka is compiled with
1.8 jdk and run on a 1.7.
{code}
java.lang.NoSuchMethodError:
java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView;
at kafka.utils.Pool.keys(Pool.scala:79)
at
kafka.coordinator.GroupMetadataManager.kafka$coordinator$GroupMetadataManager$$removeGroupsAndOffsets$1(GroupMetadataManager.scala:483)
at
kafka.coordinator.GroupMetadataManager$$anonfun$removeGroupsForPartition$1.apply$mcV$sp(GroupMetadataManager.scala:465)
at
kafka.utils.KafkaScheduler$$anonfun$1.apply$mcV$sp(KafkaScheduler.scala:110)
at kafka.utils.CoreUtils$$anon$1.run(CoreUtils.scala:60)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
{code}
The keySet() method for ConcurrentHashMap was changed in 1.8 to refer to
KeySetView, which didn't exist in 1.7. To fix it, we just need to make sure
that Pool calls ConcurrentMap.keySet() instead.
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