rmetzger commented on pull request #14239:
URL: https://github.com/apache/flink/pull/14239#issuecomment-734696972
I've rebuild Flink using the latest version of this PR + I added myself some
logging into the JobMaster / Scheduler to find out the issue:
```
Caused by: org.apache.flink.util.FlinkRuntimeException: Failed to start the
operator coordinators
at
org.apache.flink.runtime.scheduler.SchedulerBase.startAllOperatorCoordinators(SchedulerBase.java:1023)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
org.apache.flink.runtime.scheduler.SchedulerBase.startScheduling(SchedulerBase.java:490)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
org.apache.flink.runtime.jobmaster.JobMaster.startScheduling(JobMaster.java:952)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
java.util.concurrent.CompletableFuture.uniRun(CompletableFuture.java:705)
~[?:1.8.0_222]
... 27 more
Caused by: java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.Integer
at
org.apache.flink.connector.kafka.source.enumerator.KafkaSourceEnumerator.<init>(KafkaSourceEnumerator.java:116)
~[?:?]
at
org.apache.flink.connector.kafka.source.enumerator.KafkaSourceEnumerator.<init>(KafkaSourceEnumerator.java:91)
~[?:?]
at
org.apache.flink.connector.kafka.source.KafkaSource.createEnumerator(KafkaSource.java:135)
~[?:?]
at
org.apache.flink.runtime.source.coordinator.SourceCoordinator.start(SourceCoordinator.java:119)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
org.apache.flink.runtime.operators.coordination.RecreateOnResetOperatorCoordinator$DeferrableCoordinator.start(RecreateOnResetOperatorCoordinator.java:366)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
org.apache.flink.runtime.operators.coordination.RecreateOnResetOperatorCoordinator.start(RecreateOnResetOperatorCoordinator.java:69)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
org.apache.flink.runtime.operators.coordination.OperatorCoordinatorHolder.start(OperatorCoordinatorHolder.java:182)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
org.apache.flink.runtime.scheduler.SchedulerBase.startAllOperatorCoordinators(SchedulerBase.java:1017)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
org.apache.flink.runtime.scheduler.SchedulerBase.startScheduling(SchedulerBase.java:490)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
org.apache.flink.runtime.jobmaster.JobMaster.startScheduling(JobMaster.java:952)
~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
at
java.util.concurrent.CompletableFuture.uniRun(CompletableFuture.java:705)
~[?:1.8.0_222]
... 27 more
```.
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