apache/hadoop · error · IOException

Internal error

Error message

Internal error

What it means

Error "Internal error" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-gridmix/src/main/java/org/apache/hadoop/mapred/gridmix/Gridmix.java:248

    }
  }

  // Launch Input/DistCache Data Generation job and wait for completion
  void launchGridmixJob(GridmixJob job)
      throws IOException, InterruptedException {
    submitter.add(job);

    // TODO add listeners, use for job dependencies
    try {
      while (!job.isSubmitted()) {
        try {
            Thread.sleep(100); // sleep
          } catch (InterruptedException ie) {}
      }
      // wait for completion
      job.getJob().waitForCompletion(false);
    } catch (ClassNotFoundException e) {
      throw new IOException("Internal error", e);
    }
    if (!job.getJob().isSuccessful()) {
      throw new IOException(job.getJob().getJobName() + " job failed!");
    }
  }

  /**
   * Create an appropriate {@code JobStoryProducer} object for the
   * given trace.
   * 
   * @param traceIn the path to the trace file. The special path
   * "-" denotes the standard input stream.
   *
   * @param conf the configuration to be used.
   *
   * @throws IOException if there was an error.
   */
  protected JobStoryProducer createJobStoryProducer(String traceIn,

View on GitHub (pinned to 2add963021)

Solutions

1. Check the Gridmix logs for the underlying exception; this is a catch-all for unexpected failures during job submission.

When it happens

Trigger: Gridmix's job factory returns an unknown job type that does not map to LOADJOB or SLEEPJOB, indicating an internal inconsistency in the job story being replayed.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/bc850012791dc53a. Report an issue: GitHub.