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From "Akanksha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-6767) Cannot load user class on local environment
Date Thu, 02 Nov 2017 07:02:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-6767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16235291#comment-16235291
] 

Akanksha commented on FLINK-6767:
---------------------------------

Hi I am using flink 1.2.1
I am still facing this issue when I add *where clause * in SQL query.


org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: org.apache.flink.table.runtime.FlatMapRunner
ClassLoader info: URL ClassLoader:
    file: '/tmp/blobStore-1f439920-1c9a-433c-879f-db991c679b23/cache/blob_111f8d75f9a04e5af8b15f0641e70a0d77b25dd3'
(valid JAR)
Class not resolvable through given classloader.
	at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:210)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:307)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:303)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:303)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:109)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:231)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:665)
	at java.lang.Thread.run(Thread.java:748)

11/02/2017 11:40:30	Job execution switched to status FAILING.
org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: org.apache.flink.table.runtime.FlatMapRunner
ClassLoader info: URL ClassLoader:
    file: '/tmp/blobStore-1f439920-1c9a-433c-879f-db991c679b23/cache/blob_111f8d75f9a04e5af8b15f0641e70a0d77b25dd3'
(valid JAR)
Class not resolvable through given classloader.
	at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:210)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:307)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:303)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:303)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:109)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:231)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:665)
	at java.lang.Thread.run(Thread.java:748)
11/02/2017 11:40:30	Job execution switched to status FAILED.
org.apache.flink.client.program.ProgramInvocationException: The program execution failed:
Job execution failed.
	at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)
	at org.apache.flink.client.program.StandaloneClusterClient.submitJob(StandaloneClusterClient.java:101)
	at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:400)
	at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)
	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1490)
	at com.example.FlinkSql.main(FlinkSql.java:60)
	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:528)
	at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:419)
	at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:339)
	at org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:831)
	at org.apache.flink.client.CliFrontend.run(CliFrontend.java:256)
	at org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1079)
	at org.apache.flink.client.CliFrontend$2.call(CliFrontend.java:1126)
	at org.apache.flink.client.CliFrontend$2.call(CliFrontend.java:1123)
	at org.apache.flink.runtime.security.HadoopSecurityContext$1.run(HadoopSecurityContext.java:43)
	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:1657)
	at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:40)
	at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1122)
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
	at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply$mcV$sp(JobManager.scala:910)
	at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply(JobManager.scala:853)
	at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply(JobManager.scala:853)
	at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
	at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
	at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
	at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user
class: org.apache.flink.table.runtime.FlatMapRunner
ClassLoader info: URL ClassLoader:
    file: '/tmp/blobStore-1f439920-1c9a-433c-879f-db991c679b23/cache/blob_111f8d75f9a04e5af8b15f0641e70a0d77b25dd3'
(valid JAR)
Class not resolvable through given classloader.
	at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:210)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:307)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:303)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:303)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:245)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:109)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:231)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:665)
	at java.lang.Thread.run(Thread.java:748)


> Cannot load user class on local environment
> -------------------------------------------
>
>                 Key: FLINK-6767
>                 URL: https://issues.apache.org/jira/browse/FLINK-6767
>             Project: Flink
>          Issue Type: Bug
>          Components: Local Runtime
>    Affects Versions: 1.2.1
>         Environment: Flink 1.2.1 running on local environment on a Ignite 2.0 node.
>            Reporter: Matt
>            Priority: Critical
>              Labels: CollocatedComputation, Flink, Ignite, LocalEvironment
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> There is a bug in Flink 1.2.1 that results in a "cannot load user class" exception even
when the class is available in the current class loader of the thread running the job. The
problem arises when you execute a Flink job on a local environment inside an Ignite 2.0 node.
This happens on possibly all other versions of Flink and Ignite.
> This bug was discussed in [1], and a fix was proposed in [2].
> In summary, the fix requires replacing line 298 in *BlobLibraryCacheManager.java* [3]
for:
> {code:java}
> this.classLoader = new FlinkUserCodeClassLoader(libraryURLs, Thread.currentThread().getContextClassLoader());
> {code}
> A repository with a complete test case reproducing the error is found in [4].  The idea
behind the code is being able to run Flink jobs in a collocated way (ie, on the node where
the data is stored), minimizing network traffic and thus improving the performance.
> The README file contains details on how to run it and the resulting exception:
> {code}
> org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class:
com.test.Source
> ClassLoader info: URL ClassLoader:
> Class not resolvable through given classloader.
> {code}
> [1] http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/BUG-Cannot-Load-User-Class-on-Local-Environment-td12799.html
> [2] http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/BUG-Cannot-Load-User-Class-on-Local-Environment-tp12799p13376.html
> [3] https://github.com/apache/flink/blob/release-1.2/flink-runtime/src/main/java/org/apache/flink/runtime/execution/librarycache/BlobLibraryCacheManager.java#L298
> [4] https://github.com/Dromit/FlinkTest



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