AWS Step Functions EMR PySpark 任务步骤失败

Question

我有一个有效的 EMR 步骤，大约需要 500 秒。工作的 EMR 控制器日志显示：

2021-09-19T18:36:59.786Z INFO StepRunner: Created Runner for step 7
INFO startExec 'hadoop jar /var/lib/aws/emr/step-runner/hadoop-jars/command-runner.jar spark-submit --deploy-mode cluster s3://emr/scripts/aggregate.py --day 20210915 --base_uri s3://'
...
2021-09-19T18:46:35.934Z INFO Step succeeded with exitCode 0 and took 576 seconds

当我尝试使用 Step Functions 运行相同的步骤时，spark-submit 代码看起来相同但存在错误：

2021-09-19T18:36:59.786Z INFO StepRunner: Created Runner for step 7
INFO startExec 'hadoop jar /var/lib/aws/emr/step-runner/hadoop-jars/command-runner.jar spark-submit --deploy-mode cluster s3://emr/scripts/aggregate.py --day 20210915 --base_uri s3://'
...
2021-09-22T09:56:07.309Z WARN Step failed with exitCode 1 and took 2 seconds

STDERR 显示：线程“main”中的异常java.lang.RuntimeException：java.io.IOException：无法运行程序“spark-submit”（在目录“.”中）：错误=2，没有这样的文件或目录

运行使用步进函数的 pyspark 脚本的正确方法是什么？

步骤定义：

"EMR AddStep - Aggregate Daily": {
  "Type": "Task",
  "Resource": "arn:aws:states:::elasticmapreduce:addStep.sync",
  "Parameters": {
    "ClusterId.$": "$.cluster.Cluster.Id",
    "Step": {
      "Name": "Aggregate Daily",
      "ActionOnFailure": "CONTINUE",
      "HadoopJarStep": {
        "Jar": "command-runner.jar",
        "Args": [
          "spark-submit",
          "--deploy-mode",
          "cluster",
          "s3://emr/scripts/aggregate.py",
          "--day",
          "20210915",
          "--base_uri",
          "s3://"
        ]
      }
    }
  }

Answer 1

问题是 EMR 集群是在没有 Spark 选项的情况下创建的。

解决方案是在创建集群任务的步骤函数属性中的“应用程序”下添加 "Name": "Spark"：

    "EMR CreateCluster": {
      "Type": "Task",
      "Resource": "arn:aws:states:::elasticmapreduce:createCluster.sync",
      "Parameters": {
        "Name": "ExampleCluster",
        "VisibleToAllUsers": true,
        "ReleaseLabel": "emr-5.33.0",
        "Applications": [
          {
            "Name": "Hive",
            "Name": "Spark"
          }
        ],

AWS Step Functions EMR PySpark 任务步骤失败

AWS Step Functions EMR PySpark Task Step failed

amazon-web-services

amazon-emr

apache-spark

pyspark

aws-step-functions