Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
Description
When job running this step face following issue, I guess which have two class loader to loading the class InstantiatorStrategy when flink execute the reduceGroup operator
Workaround：using ByteArray instead of Text in reduceGroup operator
The kylin binary including the flink core jar is the root cause, we need to change the flink related dependence scope to provided.
The program finished with the following exception:
org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: error execute org.apache.kylin.engine.flink.FlinkCubingMerge. Root cause: Job failed. (JobID: 7a40a92561cfa972e3c5b975db993fce)
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:593)
at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:438)
at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:274)
at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:746)
at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:273)
at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:205)
at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1010)
at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:1083)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1083)
Caused by: java.lang.RuntimeException: error execute org.apache.kylin.engine.flink.FlinkCubingMerge. Root cause: Job failed. (JobID: 7a40a92561cfa972e3c5b975db993fce)
at org.apache.kylin.common.util.AbstractApplication.execute(AbstractApplication.java:42)
at org.apache.kylin.common.util.FlinkEntry.main(FlinkEntry.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:576)
... 12 more
Caused by: org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 7a40a92561cfa972e3c5b975db993fce)
at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:262)
at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:338)
at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:326)
at org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:62)
at org.apache.kylin.engine.flink.FlinkCubingMerge.execute(FlinkCubingMerge.java:235)
at org.apache.kylin.common.util.AbstractApplication.execute(AbstractApplication.java:37)
... 18 more
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)
at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:259)
... 23 more
Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "com.esotericsoftware.kryo.Kryo$DefaultInstantiatorStrategy.setFallbackInstantiatorStrategy(Lorg/objenesis/strategy/InstantiatorStrategy;)V" the class loader (instance of org/apache/flink/util/ChildFirstClassLoader) of the current class, org/apache/flink/api/java/typeutils/runtime/WritableComparator, and the class loader (instance of sun/misc/Launcher$AppClassLoader) for the method's defining class, com/esotericsoftware/kryo/Kryo$DefaultInstantiatorStrategy, have different Class objects for the type org/objenesis/strategy/InstantiatorStrategy used in the signature
at org.apache.flink.api.java.typeutils.runtime.WritableComparator.checkKryoInitialized(WritableComparator.java:174)
at org.apache.flink.api.java.typeutils.runtime.WritableComparator.setReference(WritableComparator.java:67)
at org.apache.flink.api.java.typeutils.runtime.WritableComparator.setReference(WritableComparator.java:38)
at org.apache.flink.api.java.typeutils.runtime.TupleComparator.setReference(TupleComparator.java:73)
at org.apache.flink.api.java.typeutils.runtime.TupleComparator.setReference(TupleComparator.java:30)
at org.apache.flink.runtime.operators.ReduceDriver.run(ReduceDriver.java:137)
at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:504)
at org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:369)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:705)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530)
at java.lang.Thread.run(Thread.java:748)
The command is:
export HADOOP_CONF_DIR=/etc/hadoop/conf && export HADOOP_CLASSPATH=/etc/hadoop && /opt/flink/bin/flink run -m yarn-cluster -ytm 4G -yjm 2G -yD taskmanager.memory.preallocate false -ys 1 -c org.apache.kylin.common.util.FlinkEntry -p 20 /data/kylin_poc/lib/kylin-job-3.0.1.jar -className org.apache.kylin.engine.flink.FlinkCubingMerge -output hdfs://nameservice1/kylin_poc/kylin_metadata_poc/kylin-68cac798-dbd6-ae5a-4fac-7229a23aacdc/dc_mileage_cube/cuboid/ -input hdfs://nameservice1/kylin_poc/kylin_metadata_poc/kylin-60802d42-d736-06ea-566e-0f5dc0bf9964/dc_mileage_cube/cuboid/,hdfs://nameservice1/kylin_poc/kylin_metadata_poc/kylin-4f4b2473-6b44-3831-2ff2-035186e94a7f/dc_mileage_cube/cuboid/ -enableObjectReuse false -segmentId 49cb1d56-c6ee-fe73-c431-f2891faa1efb -metaUrl kylin_metadata_poc@hdfs,path=hdfs://nameservice1/kylin_poc/kylin_metadata_poc/kylin-68cac798-dbd6-ae5a-4fac-7229a23aacdc/dc_mileage_cube/metadata -cubename dc_mileage_cube