问题
Hi I have a maven project for Flink stream processing. Based the message I get from the stream I start a batch process but currently I am getting an error.
I am pretty new to this flink world and please let me know if you have any idea. Here is the code I am using to start a standalone cluster.
final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment ( );
KafkaConsumerService kafkaConsumerService= new KafkaConsumerService();
FlinkKafkaConsumer010<String> kafkaConsumer = kafkaConsumerService.getKafkaConsumer(settings );
DataStream<String> messageStream = env.addSource (kafkaConsumer).setParallelism (3);
messageStream
.filter(new MyFilter()).setParallelism(3).name("Filter")
.map(new ProcessFile(arg)).setParallelism(3).name("start batch")
.addSink(new DiscardingSink()).setParallelism(3).name("DiscardData");
env.execute("Stream processor");
//ProcessFile map class
public ProcessFile(String arg) { }
@Override
public String map(String message) throws Exception {
MessageType typedmessage = ParseMessage(message);
if (isWhatIwant()) {
String[] batchArgs = createBatchArgs();
Configuration config = new Configuration();
config.setString(JobManagerOptions.ADDRESS, jobMasterHost);
config.setInteger(JobManagerOptions.PORT, jobMasterPort);
StandaloneClusterClient client = new StandaloneClusterClient(config);
client.setDetached(true);
PackagedProgram program = new PackagedProgram(new File(jarLocation), SupplyBatchJob.class.getName(), batchArgs);
client.run(program, 7);
}
return typedmessage;
}
The error is copied from the Job manager web portal. Error I am getting: org.apache.flink.client.program.ProgramInvocationException: Failed to retrieve the JobManager gateway. at org.apache.flink.client.program.ClusterClient.runDetached(ClusterClient.java:497) at org.apache.flink.client.program.StandaloneClusterClient.submitJob(StandaloneClusterClient.java:103) at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:442) at org.apache.flink.client.program.DetachedEnvironment.finalizeExecute(DetachedEnvironment.java:76) at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:387) at cw.supply.data.parser.maps.ProcessFileMessage.map(ProcessFileMessage.java:47) at cw.supply.data.parser.maps.ProcessFileMessage.map(ProcessFileMessage.java:25) at org.apache.flink.streaming.api.operators.StreamMap.processElement(StreamMap.java:41) at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:528) at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:503) at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:483) at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:891) at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:869) at org.apache.flink.streaming.api.operators.StreamFilter.processElement(StreamFilter.java:40) at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:528) at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:503) at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:483) at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:891) at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:869) at org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collect(StreamSourceContexts.java:103) at org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collectWithTimestamp(StreamSourceContexts.java:110) at org.apache.flink.streaming.connectors.kafka.internals.AbstractFetcher.emitRecordWithTimestamp(AbstractFetcher.java:269) at org.apache.flink.streaming.connectors.kafka.internal.Kafka010Fetcher.emitRecord(Kafka010Fetcher.java:86) at org.apache.flink.streaming.connectors.kafka.internal.Kafka09Fetcher.runFetchLoop(Kafka09Fetcher.java:152) at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.run(FlinkKafkaConsumerBase.java:483) at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:87) at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:55) at org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:95) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:263) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:702) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.flink.util.FlinkException: Could not connect to the leading JobManager. Please check that the JobManager is running. at org.apache.flink.client.program.ClusterClient.getJobManagerGateway(ClusterClient.java:789) at org.apache.flink.client.program.ClusterClient.runDetached(ClusterClient.java:495) ... 30 more Caused by: org.apache.flink.runtime.leaderretrieval.LeaderRetrievalException: Could not retrieve the leader gateway. at org.apache.flink.runtime.util.LeaderRetrievalUtils.retrieveLeaderGateway(LeaderRetrievalUtils.java:79) at org.apache.flink.client.program.ClusterClient.getJobManagerGateway(ClusterClient.java:784) ... 31 more Caused by: java.util.concurrent.TimeoutException: Futures timed out after [10000 milliseconds] at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219) at scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223) at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:190) at scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53) at scala.concurrent.Await$.result(package.scala:190) at scala.concurrent.Await.result(package.scala) at org.apache.flink.runtime.util.LeaderRetrievalUtils.retrieveLeaderGateway(LeaderRetrievalUtils.java:77) ... 32 more
回答1:
I figured what the issue is after getting access to the environment I verified. I was using the public address of the JobManager where the port is not open. Instead I started using the private IP since all nodes are in the same subnet and no need of opening the port to the world. Hope this helps someone else too.
来源：https://stackoverflow.com/questions/50658740/starting-batch-process-from-a-stream-job