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Flink cluster configuration issue - no slots available

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Flink cluster configuration issue - no slots available

Rising Star

Hello,

I have a similar issue as discussed here.These are the settings:

6928-jm.jpg

I see no TaskManagers.

The overview shows:
0
Task Managers
0
Task Slots
0
Available Task Slots

Running the example word count job I receive

/usr/apache/flink-1.1.1/bin# /usr/apache/flink-1.1.1/bin/flink run /usr/apache/flink-1.1.1/examples/streaming/WordCount.jar
Cluster configuration: Standalone cluster with JobManager at dedcm4229/10.79.210.78:6130
Using address dedcm4229:6130 to connect to JobManager.
JobManager web interface address http://dedcm4229:8081
Starting execution of program
Executing WordCount example with default input data set.
Use --input to specify file input.
Printing result to stdout. Use --output to specify output path.
Submitting job with JobID: 47fee79c80eba58333eec5c3c3ee1cf0. Waiting for job completion.
08/24/2016 16:32:07     Job execution switched to status RUNNING.
08/24/2016 16:32:07     Source: Collection Source -> Flat Map(1/1) switched to SCHEDULED
08/24/2016 16:32:07     Job execution switched to status FAILING.
org.apache.flink.runtime.jobmanager.scheduler.NoResourceAvailableException: Not enough free slots available to run the job. You can decrease the operator parallelism or increase the number of slots per TaskManager in the configuration. Task to schedule: < Attempt #0 (Source: Collection Source -> Flat Map (1/1)) @ (unassigned) - [SCHEDULED] > with groupID < 963af48f2c5d35ff2fcaa1bc235543a7 > in sharing group < SlotSharingGroup [7168183d09cf33bacf5ac595e608bd87, 963af48f2c5d35ff2fcaa1bc235543a7] >. Resources available to scheduler: Number of instances=0, total number of slots=0, available slots=0
        at org.apache.flink.runtime.jobmanager.scheduler.Scheduler.scheduleTask(Scheduler.java:256)
        at org.apache.flink.runtime.jobmanager.scheduler.Scheduler.scheduleImmediately(Scheduler.java:131)
        at org.apache.flink.runtime.executiongraph.Execution.scheduleForExecution(Execution.java:306)
        at org.apache.flink.runtime.executiongraph.ExecutionVertex.scheduleForExecution(ExecutionVertex.java:454)
        at org.apache.flink.runtime.executiongraph.ExecutionJobVertex.scheduleAll(ExecutionJobVertex.java:326)
        at org.apache.flink.runtime.executiongraph.ExecutionGraph.scheduleForExecution(ExecutionGraph.java:741)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply$mcV$sp(JobManager.scala:1332)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply(JobManager.scala:1291)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply(JobManager.scala:1291)
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
        at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41)
        at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:401)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346)
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
08/24/2016 16:32:07     Source: Collection Source -> Flat Map(1/1) switched to CANCELED
08/24/2016 16:32:07     Keyed Aggregation -> Sink: Unnamed(1/1) switched to CANCELED
08/24/2016 16:32:07     Job execution switched to status FAILED.

------------------------------------------------------------
 The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: The program execution failed: Job execution failed.
        at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:413)
        at org.apache.flink.client.program.StandaloneClusterClient.submitJob(StandaloneClusterClient.java:92)
        at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:389)
        at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:68)
        at org.apache.flink.streaming.examples.wordcount.WordCount.main(WordCount.java:93)
        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:497)
        at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:509)
        at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:403)
        at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:331)
        at org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:777)
        at org.apache.flink.client.CliFrontend.run(CliFrontend.java:253)
        at org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1005)
        at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1048)
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$8.apply$mcV$sp(JobManager.scala:822)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$8.apply(JobManager.scala:768)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$8.apply(JobManager.scala:768)
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
        at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41)
        at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:401)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346)
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.apache.flink.runtime.jobmanager.scheduler.NoResourceAvailableException: Not enough free slots available to run the job. You can decrease the operator parallelism or increase the number of slots per TaskManager in the configuration. Task to schedule: < Attempt #0 (Source: Collection Source -> Flat Map (1/1)) @ (unassigned) - [SCHEDULED] > with groupID < 963af48f2c5d35ff2fcaa1bc235543a7 > in sharing group < SlotSharingGroup [7168183d09cf33bacf5ac595e608bd87, 963af48f2c5d35ff2fcaa1bc235543a7] >. Resources available to scheduler: Number of instances=0, total number of slots=0, available slots=0
        at org.apache.flink.runtime.jobmanager.scheduler.Scheduler.scheduleTask(Scheduler.java:256)
        at org.apache.flink.runtime.jobmanager.scheduler.Scheduler.scheduleImmediately(Scheduler.java:131)
        at org.apache.flink.runtime.executiongraph.Execution.scheduleForExecution(Execution.java:306)
        at org.apache.flink.runtime.executiongraph.ExecutionVertex.scheduleForExecution(ExecutionVertex.java:454)
        at org.apache.flink.runtime.executiongraph.ExecutionJobVertex.scheduleAll(ExecutionJobVertex.java:326)
        at org.apache.flink.runtime.executiongraph.ExecutionGraph.scheduleForExecution(ExecutionGraph.java:741)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply$mcV$sp(JobManager.scala:1332)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply(JobManager.scala:1291)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply(JobManager.scala:1291)
        ... 9 more

Could someone have a look into this log above and give advice to fix this issue please?

Klaus

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Flink cluster configuration issue - no slots available

Rising Star

Hi Robert,

I have no logs from TaskManagers in the log dir.

I played a bit with the heap.mb size of the Taskmangers and entering 4096 for it, the taskmangers started.

Thanks for your interest to help.

:-) Klaus

2 REPLIES 2

Re: Flink cluster configuration issue - no slots available

New Contributor

Hi Klaus,

did you check whether the TaskManagers properly started? Their log files should tell you if there was an issue.

Re: Flink cluster configuration issue - no slots available

Rising Star

Hi Robert,

I have no logs from TaskManagers in the log dir.

I played a bit with the heap.mb size of the Taskmangers and entering 4096 for it, the taskmangers started.

Thanks for your interest to help.

:-) Klaus

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