{"record":{"id":"e5279ebbe7468f1d","repo":"apache/hadoop","slug":"no-task-for-the-job","errorCode":null,"errorMessage":"No task for the job!","messagePattern":"No task for the job!","errorType":"exception","errorClass":"YarnException","httpStatus":null,"severity":"error","filePath":"hadoop-tools/hadoop-sls/src/main/java/org/apache/hadoop/yarn/sls/AMDefinitionSLS.java","lineNumber":43,"sourceCode":"\nimport java.util.ArrayList;\nimport java.util.List;\nimport java.util.Map;\n\npublic class AMDefinitionSLS extends AMDefinition {\n  public AMDefinitionSLS(AmDefinitionBuilder builder) {\n    super(builder);\n  }\n\n  public String getQueue() {\n    return queue;\n  }\n\n  public static List<ContainerSimulator> getTaskContainers(Map<String, ?> jsonJob,\n      SLSRunner slsRunner) throws YarnException {\n    List<Map<String, String>> tasks = (List) jsonJob.get(SLSConfiguration.JOB_TASKS);\n    if (tasks == null || tasks.size() == 0) {\n      throw new YarnException(\"No task for the job!\");\n    }\n\n    List<ContainerSimulator> containers = new ArrayList<>();\n    for (Map<String, String> jsonTask : tasks) {\n      TaskContainerDefinition containerDef =\n          TaskContainerDefinition.Builder.create()\n              .withCount(jsonTask, SLSConfiguration.COUNT)\n              .withHostname(jsonTask.get(SLSConfiguration.TASK_HOST))\n              .withDuration(jsonTask, SLSConfiguration.TASK_DURATION_MS)\n              .withDurationLegacy(jsonTask, SLSConfiguration.DURATION_MS)\n              .withTaskStart(jsonTask, SLSConfiguration.TASK_START_MS)\n              .withTaskFinish(jsonTask, SLSConfiguration.TASK_END_MS)\n              .withResource(getResourceForContainer(jsonTask, slsRunner))\n              .withPriority(jsonTask, SLSConfiguration.TASK_PRIORITY)\n              .withType(jsonTask, SLSConfiguration.TASK_TYPE)\n              .withExecutionType(jsonTask, SLSConfiguration.TASK_EXECUTION_TYPE)\n              .withAllocationId(jsonTask, SLSConfiguration.TASK_ALLOCATION_ID)\n              .withRequestDelay(jsonTask, SLSConfiguration.TASK_REQUEST_DELAY)","sourceCodeStart":25,"sourceCodeEnd":61,"githubUrl":"https://github.com/apache/hadoop/blob/2add9630210752f88ceb1bb74eb65e37bf41da8e/hadoop-tools/hadoop-sls/src/main/java/org/apache/hadoop/yarn/sls/AMDefinitionSLS.java#L25-L61","documentation":"Error \"No task for the job!\" thrown in apache/hadoop.","triggerScenarios":"A job in the SLS trace contains no map or reduce tasks, so the simulated AM has nothing to run.","commonSituations":"See trigger scenarios.","solutions":["Ensure the SLS trace job entry contains at least one task."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"2add9630210752f88ceb1bb74eb65e37bf41da8e","analyzedAt":"2026-08-22T19:55:07.957Z","schemaVersion":2},"datasetVersion":"2026-08-23T01:17:44.959Z"}