Flink Java踩坑记录（gegge1.10.0）

Posted 2020-12-08 hsoyoi

场景
使用Flink，从阿里云的AMQP中获取数据，然后直接写入到InfluxDB中。即：

source：amqp

sink：influxdb

环境
Linux：Centos8.0

Hadoop：2.8.3

Flink：1.10.0

Java：1.8.0_77

InfluxDB：1.7.1

RocketMQ：4.6.1

数据流

踩坑1
错误日志如下：

复制代码
2020-03-16 09:38:01,555 INFO org.apache.flink.yarn.YarnClusterDescriptor - Found Web Interface rexel-ids003:9081 of application ‘application_1584064740592_0003‘.
Job has been submitted with JobID 72a5e1fc34a1998228644056567b03eb

---

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: org.apache.flink.client.program.ProgramInvocationException: Job failed (JobID: 72a5e1fc34a1998228644056567b03eb)
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:335)
at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205)
at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138)
at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:664)
at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)
at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895)
at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968)
Caused by: java.util.concurrent.ExecutionException: org.apache.flink.client.program.ProgramInvocationException: Job failed (JobID: 72a5e1fc34a1998228644056567b03eb)
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:83)
at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1620)
at com.rexel.flink.app.ThingJob.main(ThingJob.java:56)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:321)
... 11 more
Caused by: org.apache.flink.client.program.ProgramInvocationException: Job failed (JobID: 72a5e1fc34a1998228644056567b03eb)
at org.apache.flink.client.deployment.ClusterClientJobClientAdapter.lambda$null$6(ClusterClientJobClientAdapter.java:112)
at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
at org.apache.flink.client.program.rest.RestClusterClient.lambda$pollResourceAsync$21(RestClusterClient.java:565)
at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
at org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$8(FutureUtils.java:291)
at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:561)
at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:929)
at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:147)
at org.apache.flink.client.deployment.ClusterClientJobClientAdapter.lambda$null$6(ClusterClientJobClientAdapter.java:110)
... 19 more
Caused by: org.apache.flink.runtime.JobException: Recovery is suppressed by NoRestartBackoffTimeStrategy
at org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:110)
at org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:76)
at org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:192)
at org.apache.flink.runtime.scheduler.DefaultScheduler.maybeHandleTaskFailure(DefaultScheduler.java:186)
at org.apache.flink.runtime.scheduler.DefaultScheduler.updateTaskExecutionStateInternal(DefaultScheduler.java:180)
at org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:484)
at org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:380)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:279)
at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:194)
at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:74)
at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:152)
at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26)
at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21)
at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:123)
at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21)
at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:170)
at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
at akka.actor.Actor$class.aroundReceive(Actor.scala:517)
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$WorkQueue.runTask(ForkJoinPool.java:1339)
at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: java.lang.IllegalArgumentException: Expecting a non-empty string for url
at org.influxdb.impl.Preconditions.checkNonEmptyString(Preconditions.java:22)
at org.influxdb.InfluxDBFactory.connect(InfluxDBFactory.java:46)
at com.rexel.influxdb.utils.InfluxUtils.connect(InfluxUtils.java:49)
at com.rexel.flink.sink.InfluxDBSink.open(InfluxDBSink.java:27)
at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36)
at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102)
at org.apache.flink.streaming.api.operators.StreamSink.open(StreamSink.java:48)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeStateAndOpen(StreamTask.java:1007)
at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$0(StreamTask.java:454)
at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:94)
at org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:449)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:461)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:707)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:532)
at java.lang.Thread.run(Thread.java:745)
复制代码

从日志总可以看到是在建立influxdb连接时url为空报错。原因是我的全局参数传递的不正确

传递全局参数的正确方法如下：

复制代码
package com.rexel.stream.flink.sink;

import com.alibaba.fastjson.JSONObject;
import com.rexel.stream.common.pojo.DeviceBase;
import com.rexel.stream.common.cons.Constants;
import com.rexel.stream.common.utils.InfluxUtils;
import java.util.Map;
import org.apache.flink.api.common.ExecutionConfig.GlobalJobParameters;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.functions.sink.RichSinkFunction;
import org.apache.flink.streaming.api.functions.sink.SinkFunction;
import org.influxdb.InfluxDB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class InfluxDBSink extends RichSinkFunction {
private static Logger logger = LoggerFactory.getLogger(InfluxDBSink.class);
private static final long serialVersionUID = 1L;
private InfluxUtils influxUtils = InfluxUtils.getInstance();
private InfluxDB influxDB = null;
private String dbName = null;

@Override
public void open(Configuration parameters) throws Exception {
    GlobalJobParameters globalJobParameters =
        getRuntimeContext().getExecutionConfig().getGlobalJobParameters();
    Map<String, String> paramMap = globalJobParameters.toMap();

    boolean isLocal = Boolean.valueOf(paramMap.get(Constants.CONF_LOCAL));
    String url;
    if (isLocal) {
        url = paramMap.get(Constants.INFLUX_PUBLIC_URL);
    } else {
        url = paramMap.get(Constants.INFLUX_PRIVATE_URL);
    }
    String userName = paramMap.get(Constants.INFLUX_USERNAME);
    String password = paramMap.get(Constants.INFLUX_PASSWORD);
    String database = paramMap.get(Constants.INFLUX_DATABASE);
    logger.info("[------]url=" + url);
    logger.info("[------]userName=" + userName);
    logger.info("[------]password=" + password);
    logger.info("[------]database=" + database);

    // 创建InfluxDB连接
    this.influxDB = this.influxUtils.connect(url, userName, password);
    if (this.influxDB == null) {
        throw new Exception("[------]influxDB == null");
    }
    this.dbName = database;
    this.influxDB.setDatabase(database);
}

@Override
public void invoke(String value, SinkFunction.Context context) throws Exception {
    JSONObject jsonObject = JSONObject.parseObject(value);
    String topic = jsonObject.getString(Constants.TUPLE_FIELD_TOPIC);
    String content = jsonObject.getString(Constants.TUPLE_FIELD_CONTENT);

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