(DEPRECATED) Apache Flink User Mailing List archive.

WordCount w/ YARN and EMR local filesystem and/or HDFS

Posted by Foster, Craig on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/WordCount-w-YARN-and-EMR-local-filesystem-and-or-HDFS-tp8630.html

I'm trying to use the wordcount example with the local file system, but it's giving me permissions error or it's not finding it. It works just fine for input and output on S3. What is the correct URI usage for the local file system and HDFS?

I have installed Flink on EMR and am just using the flink run script to start the job:

% flink run -m yarn-cluster -yn 2 /usr/lib/flink/examples/streaming/WordCount.jar --input file:///home/hadoop/LICENSE.txt

<snip>

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: The program execution failed: Failed to submit job 8a9efe4f99c5cad5897c18146fb66309 (Streaming WordCount)

at org.apache.flink.client.program.Client.runBlocking(Client.java:381)

at org.apache.flink.client.program.Client.runBlocking(Client.java:355)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:65)

at org.apache.flink.streaming.examples.wordcount.WordCount.main(WordCount.java:94)

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:505)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:403)

at org.apache.flink.client.program.Client.runBlocking(Client.java:248)

at org.apache.flink.client.CliFrontend.executeProgramBlocking(CliFrontend.java:866)

at org.apache.flink.client.CliFrontend.run(CliFrontend.java:333)

at org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1192)

at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1243)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Failed to submit job 8a9efe4f99c5cad5897c18146fb66309 (Streaming WordCount)

at org.apache.flink.runtime.jobmanager.JobManager.org$apache$flink$runtime$jobmanager$JobManager$$submitJob(JobManager.scala:1120)

at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1.applyOrElse(JobManager.scala:381)

at scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)

at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)

at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)

at org.apache.flink.yarn.YarnJobManager$$anonfun$handleYarnMessage$1.applyOrElse(YarnJobManager.scala:153)

at scala.PartialFunction$OrElse.apply(PartialFunction.scala:162)

at org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:36)

at scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)

at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)

at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)

at org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33)

at org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28)

at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)

at org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28)

at akka.actor.Actor$class.aroundReceive(Actor.scala:465)

at org.apache.flink.runtime.jobmanager.JobManager.aroundReceive(JobManager.scala:107)

at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)

at akka.actor.ActorCell.invoke(ActorCell.scala:487)

at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)

at akka.dispatch.Mailbox.run(Mailbox.scala:221)

at akka.dispatch.Mailbox.exec(Mailbox.scala:231)

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.runtime.JobException: Creating the input splits caused an error: File file:/home/hadoop/LICENSE.txt does not exist or the user running Flink ('yarn') has insufficient permissions to access it.

at org.apache.flink.runtime.executiongraph.ExecutionJobVertex.<init>(ExecutionJobVertex.java:172)

at org.apache.flink.runtime.executiongraph.ExecutionGraph.attachJobGraph(ExecutionGraph.java:679)

at org.apache.flink.runtime.jobmanager.JobManager.org$apache$flink$runtime$jobmanager$JobManager$$submitJob(JobManager.scala:1026)

... 25 more

Caused by: java.io.FileNotFoundException: File file:/home/hadoop/LICENSE.txt does not exist or the user running Flink ('yarn') has insufficient permissions to access it.

at org.apache.flink.core.fs.local.LocalFileSystem.getFileStatus(LocalFileSystem.java:108)

at org.apache.flink.api.common.io.FileInputFormat.createInputSplits(FileInputFormat.java:451)

at org.apache.flink.api.common.io.FileInputFormat.createInputSplits(FileInputFormat.java:57)

at org.apache.flink.runtime.executiongraph.ExecutionJobVertex.<init>(ExecutionJobVertex.java:156)

... 27 more

Shutting down YARN cluster

% ls -al LICENSE.txt

-rwxr--r-- 1 hadoop hadoop 15419 Aug 23 14:52 LICENSE.txt

Are there really permissions issues and if so how would I correct that (since permissions are ostensibly correct for any other application)?

For HDFS, I tried this but got a protobuf exception:

% flink run -m yarn-cluster -yn 2 /usr/lib/flink/examples/streaming/WordCount.jar --input hdfs://ec2-54-208-188-194.compute-1.amazonaws.com:50070/user/hadoop/LICENSE.txt