Hi, >From the error message, I think the problem is no python interpreter on your TaskManager machine. You need to install a python 3.5+ interpreter on the TM machine, and this python environment needs to install pyflink (pip install apache-flink). For details, you can refer to the document[1].
[1] https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/python/installation.html Best, Xingbo Robert Cullen <cinquate...@gmail.com> 于2021年3月16日周二 上午2:58写道： > Okay, I added the jars and fixed that exception. However I have a new > exception that is harder to decipher: > > 2021-03-15 14:46:20 > org.apache.flink.runtime.JobException: Recovery is suppressed by > NoRestartBackoffTimeStrategy > at > org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:116) > at > org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:78) > at > org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:224) > at > org.apache.flink.runtime.scheduler.DefaultScheduler.maybeHandleTaskFailure(DefaultScheduler.java:217) > at > org.apache.flink.runtime.scheduler.DefaultScheduler.updateTaskExecutionStateInternal(DefaultScheduler.java:208) > at > org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:610) > at > org.apache.flink.runtime.scheduler.SchedulerNG.updateTaskExecutionState(SchedulerNG.java:89) > at > org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:419) > 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.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:286) > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:201) > at > org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:74) > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:154) > at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26) > at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21) > at scala.PartialFunction.applyOrElse(PartialFunction.scala:123) > at scala.PartialFunction.applyOrElse$(PartialFunction.scala:122) > at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21) > at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) > at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172) > at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172) > at akka.actor.Actor.aroundReceive(Actor.scala:517) > at akka.actor.Actor.aroundReceive$(Actor.scala:515) > at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225) > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592) > at akka.actor.ActorCell.invoke(ActorCell.scala:561) > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258) > at akka.dispatch.Mailbox.run(Mailbox.scala:225) > at akka.dispatch.Mailbox.exec(Mailbox.scala:235) > at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) > at > akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) > at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) > at > akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) > Caused by: java.io.IOException: Cannot run program "python": error=2, No such > file or directory > at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) > at > org.apache.flink.python.util.PythonEnvironmentManagerUtils.execute(PythonEnvironmentManagerUtils.java:181) > at > org.apache.flink.python.util.PythonEnvironmentManagerUtils.getPythonUdfRunnerScript(PythonEnvironmentManagerUtils.java:141) > at > org.apache.flink.python.env.beam.ProcessPythonEnvironmentManager.createEnvironment(ProcessPythonEnvironmentManager.java:181) > at > org.apache.flink.streaming.api.runners.python.beam.BeamPythonFunctionRunner.createPythonExecutionEnvironment(BeamPythonFunctionRunner.java:340) > at > org.apache.flink.streaming.api.runners.python.beam.BeamPythonFunctionRunner.lambda$open$0(BeamPythonFunctionRunner.java:259) > at > org.apache.flink.runtime.memory.MemoryManager.lambda$getSharedMemoryResourceForManagedMemory$5(MemoryManager.java:512) > at > org.apache.flink.runtime.memory.SharedResources.createResource(SharedResources.java:130) > at > org.apache.flink.runtime.memory.SharedResources.getOrAllocateSharedResource(SharedResources.java:72) > at > org.apache.flink.runtime.memory.MemoryManager.getSharedMemoryResourceForManagedMemory(MemoryManager.java:522) > at > org.apache.flink.streaming.api.runners.python.beam.BeamPythonFunctionRunner.open(BeamPythonFunctionRunner.java:262) > at > org.apache.flink.streaming.api.operators.python.AbstractPythonFunctionOperator.open(AbstractPythonFunctionOperator.java:123) > at > org.apache.flink.streaming.api.operators.python.PythonKeyedProcessOperator.open(PythonKeyedProcessOperator.java:198) > at > org.apache.flink.streaming.runtime.tasks.OperatorChain.initializeStateAndOpenOperators(OperatorChain.java:401) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$2(StreamTask.java:507) > at > org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.runThrowing(StreamTaskActionExecutor.java:47) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:501) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:531) > at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:722) > at org.apache.flink.runtime.taskmanager.Task.run(Task.java:547) > at java.lang.Thread.run(Thread.java:748) > Caused by: java.io.IOException: error=2, No such file or directory > at java.lang.UNIXProcess.forkAndExec(Native Method) > at java.lang.UNIXProcess.<init>(UNIXProcess.java:247) > at java.lang.ProcessImpl.start(ProcessImpl.java:134) > at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) > ... 20 more > > > On Mon, Mar 15, 2021 at 10:49 AM Robert Metzger <rmetz...@apache.org> > wrote: > >> Hey, >> are you sure the class is in the lib/ folder of all machines / instances, >> and you've restarted Flink after adding the files to lib/ ? >> >> On Mon, Mar 15, 2021 at 3:42 PM Robert Cullen <cinquate...@gmail.com> >> wrote: >> >>> Shuiqiang, >>> >>> I added the flink-connector-kafka_2-12 jar to the /opt/flink/lib >>> directory >>> >>> When submitting this job to my flink cluster I’m getting this stack >>> trace at runtime: >>> >>> org.apache.flink.runtime.JobException: Recovery is suppressed by >>> NoRestartBackoffTimeStrategy >>> at >>> org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:116) >>> at >>> org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:78) >>> at >>> org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:224) >>> at >>> org.apache.flink.runtime.scheduler.DefaultScheduler.maybeHandleTaskFailure(DefaultScheduler.java:217) >>> at >>> org.apache.flink.runtime.scheduler.DefaultScheduler.updateTaskExecutionStateInternal(DefaultScheduler.java:208) >>> at >>> org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:610) >>> at >>> org.apache.flink.runtime.scheduler.SchedulerNG.updateTaskExecutionState(SchedulerNG.java:89) >>> at >>> org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:419) >>> at sun.reflect.GeneratedMethodAccessor71.invoke(Unknown Source) >>> at >>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >>> at java.lang.reflect.Method.invoke(Method.java:498) >>> at >>> org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:286) >>> at >>> org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:201) >>> at >>> org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:74) >>> at >>> org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:154) >>> at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26) >>> at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21) >>> at scala.PartialFunction.applyOrElse(PartialFunction.scala:123) >>> at scala.PartialFunction.applyOrElse$(PartialFunction.scala:122) >>> at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21) >>> at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) >>> at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172) >>> at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172) >>> at akka.actor.Actor.aroundReceive(Actor.scala:517) >>> at akka.actor.Actor.aroundReceive$(Actor.scala:515) >>> at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225) >>> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592) >>> at akka.actor.ActorCell.invoke(ActorCell.scala:561) >>> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258) >>> at akka.dispatch.Mailbox.run(Mailbox.scala:225) >>> at akka.dispatch.Mailbox.exec(Mailbox.scala:235) >>> at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >>> at >>> akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >>> at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >>> at >>> akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >>> Caused by: org.apache.flink.streaming.runtime.tasks.StreamTaskException: >>> Cannot load user class: >>> org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer >>> ClassLoader info: URL ClassLoader: >>> Class not resolvable through given classloader. >>> at >>> org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperatorFactory(StreamConfig.java:322) >>> at >>> org.apache.flink.streaming.runtime.tasks.OperatorChain.createOperator(OperatorChain.java:614) >>> at >>> org.apache.flink.streaming.runtime.tasks.OperatorChain.createOperatorChain(OperatorChain.java:583) >>> at >>> org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:526) >>> at >>> org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:164) >>> at >>> org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:485) >>> at >>> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:531) >>> at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:722) >>> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:547) >>> at java.lang.Thread.run(Thread.java:748) >>> Caused by: java.lang.ClassNotFoundException: >>> org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer >>> at java.net.URLClassLoader.findClass(URLClassLoader.java:382) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:418) >>> at >>> org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:63) >>> at >>> org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:63) >>> at >>> org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:49) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:351) >>> at >>> org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders$SafetyNetWrapperClassLoader.loadClass(FlinkUserCodeClassLoaders.java:168) >>> at java.lang.Class.forName0(Native Method) >>> at java.lang.Class.forName(Class.java:348) >>> at >>> org.apache.flink.util.InstantiationUtil$ClassLoaderObjectInputStream.resolveClass(InstantiationUtil.java:78) >>> at >>> java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1986) >>> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1850) >>> at >>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2160) >>> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667) >>> at >>> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2405) >>> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2329) >>> at >>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2187) >>> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667) >>> at >>> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2405) >>> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2329) >>> at >>> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2187) >>> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667) >>> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:503) >>> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:461) >>> at >>> org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:576) >>> at >>> org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:562) >>> at >>> org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:550) >>> at >>> org.apache.flink.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:511) >>> at >>> org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperatorFactory(StreamConfig.java:310) >>> ... 9 more >>> >>> >>> On Sat, Mar 13, 2021 at 12:13 AM Shuiqiang Chen <acqua....@gmail.com> >>> wrote: >>> >>>> Hi Robert, >>>> >>>> You can refer to >>>> https://github.com/apache/flink/blob/master/flink-end-to-end-tests/flink-python-test/python/datastream/data_stream_job.py >>>> for the whole example. >>>> >>>> Best, >>>> Shuiqiang >>>> >>>> Robert Cullen <cinquate...@gmail.com> 于2021年3月13日周六 上午4:01写道： >>>> >>>>> Shuiqiang, Can you include the import statements? thanks. >>>>> >>>>> On Fri, Mar 12, 2021 at 1:48 PM Shuiqiang Chen <acqua....@gmail.com> >>>>> wrote: >>>>> >>>>>> Hi Robert, >>>>>> >>>>>> Kafka Connector is provided in Python DataStream API since >>>>>> release-1.12.0. And the documentation for it is lacking, we will make it >>>>>> up >>>>>> soon. >>>>>> >>>>>> The following code shows how to apply KafkaConsumers and >>>>>> KafkaProducer: >>>>>> ``` >>>>>> env = StreamExecutionEnvironment.get_execution_environment() >>>>>> env.set_parallelism(1) >>>>>> env.set_stream_time_characteristic(TimeCharacteristic.EventTime) >>>>>> >>>>>> # define the schema of the message from kafka, here the data is in >>>>>> json format. >>>>>> type_info = Types.ROW_NAMED(['createTime', 'orderId', 'payAmount', >>>>>> 'payPlatform', 'provinceId'], >>>>>> [Types.LONG(), Types.LONG(), Types.DOUBLE(), Types.INT(), >>>>>> Types.INT()]) >>>>>> json_row_schema = >>>>>> JsonRowDeserializationSchema.builder().type_info(type_info).build() >>>>>> >>>>>> # define the kafka connection properties. >>>>>> kafka_props = {'bootstrap.servers': 'localhost:9092', 'group.id': >>>>>> 'pyflink-e2e-source'} >>>>>> >>>>>> # create the KafkaConsumer and KafkaProducer with the specified topic >>>>>> name, serialization/deserialization schema and properties. >>>>>> kafka_consumer = FlinkKafkaConsumer("timer-stream-source", >>>>>> json_row_schema, kafka_props) >>>>>> kafka_producer = FlinkKafkaProducer("timer-stream-sink", >>>>>> SimpleStringSchema(), kafka_props) >>>>>> >>>>>> # set the kafka source to consume data from earliest offset. >>>>>> kafka_consumer.set_start_from_earliest() >>>>>> >>>>>> # create a DataStream from kafka consumer source >>>>>> ds = env.add_source(kafka_consumer) >>>>>> >>>>>> result_stream = ... >>>>>> >>>>>> # write the result into kafka by a kafka producer sink. >>>>>> result_stream.add_sink(kafka_producer) >>>>>> ``` >>>>>> >>>>>> Best, >>>>>> Shuiqiang >>>>>> >>>>>> Robert Cullen <cinquate...@gmail.com> 于2021年3月13日周六 上午12:56写道： >>>>>> >>>>>>> I’ve scoured the web looking for an example of using a Kafka source >>>>>>> for a DataStream in python. Can someone finish this example? >>>>>>> >>>>>>> env = StreamExecutionEnvironment.get_execution_environment() >>>>>>> env.set_parallelism(1) >>>>>>> ds = env.from_collection( KAFKA_SOURCE ) >>>>>>> ... >>>>>>> >>>>>>> -- >>>>>>> Robert Cullen >>>>>>> 240-475-4490 >>>>>>> >>>>>> >>>>> >>>>> -- >>>>> Robert Cullen >>>>> 240-475-4490 >>>>> >>>> >>> >>> -- >>> Robert Cullen >>> 240-475-4490 >>> >> > > -- > Robert Cullen > 240-475-4490 >
