apache/hadoop · error · IllegalArgumentException

getTaskInfo only supports MAP or REDUCE tasks: {} for task =

Error message

getTaskInfo only supports MAP or REDUCE tasks: {} for task = {}

What it means

Error "getTaskInfo only supports MAP or REDUCE tasks: {} for task = {}" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-rumen/src/main/java/org/apache/hadoop/tools/rumen/ZombieJob.java:655

    }
  }

  private TaskInfo getTaskInfo(LoggedTask loggedTask) {
    if (loggedTask == null) {
      return new TaskInfo(0, 0, 0, 0, 0, 0);
    }
    List<LoggedTaskAttempt> attempts = loggedTask.getAttempts();

    long inputBytes = -1;
    long inputRecords = -1;
    long outputBytes = -1;
    long outputRecords = -1;
    long heapMegabytes = -1;
    ResourceUsageMetrics metrics = new ResourceUsageMetrics();

    Values type = loggedTask.getTaskType();
    if ((type != Values.MAP) && (type != Values.REDUCE)) {
      throw new IllegalArgumentException(
          "getTaskInfo only supports MAP or REDUCE tasks: " + type.toString()
              + " for task = " + loggedTask.getTaskID());
    }

    for (LoggedTaskAttempt attempt : attempts) {
      attempt = sanitizeLoggedTaskAttempt(attempt);
      // ignore bad attempts or unsuccessful attempts.
      if ((attempt == null) || (attempt.getResult() != Values.SUCCESS)) {
        continue;
      }

      if (type == Values.MAP) {
        inputBytes = attempt.getHdfsBytesRead();
        inputRecords = attempt.getMapInputRecords();
        outputBytes =
            (job.getTotalReduces() > 0) ? attempt.getMapOutputBytes() : attempt
                .getHdfsBytesWritten();
        outputRecords = attempt.getMapOutputRecords();

View on GitHub (pinned to 2add963021)

Solutions

1. Call getTaskInfo only for MAP or REDUCE tasks; the requested task has another type.

When it happens

Trigger: ZombieJob.getTaskInfo only supports MAP or REDUCE task types; any other task type in the job story triggers this error.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/4d2def947f12e661. Report an issue: GitHub.