apache/hadoop · error · IllegalArgumentException

job is null

Error message

job is null

What it means

Error "job is null" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-rumen/src/main/java/org/apache/hadoop/tools/rumen/ZombieJob.java:87

  double rackLocalOverNodeLocal = 1.5;
  double rackRemoteOverNodeLocal = 3.0;

  /**
   * This constructor creates a {@link ZombieJob} with the same semantics as the
   * {@link LoggedJob} passed in this parameter
   * 
   * @param job
   *          The dead job this ZombieJob instance is based on.
   * @param cluster
   *          The cluster topology where the dead job ran on. This argument can
   *          be null if we do not have knowledge of the cluster topology.
   * @param seed
   *          Seed for the random number generator for filling in information
   *          not available from the ZombieJob.
   */
  public ZombieJob(LoggedJob job, ClusterStory cluster, long seed) {
    if (job == null) {
      throw new IllegalArgumentException("job is null");
    }
    this.job = job;
    this.cluster = cluster;
    random = new Random(seed);
    this.seed = seed;
    hasRandomSeed = true;
  }

  /**
   * This constructor creates a {@link ZombieJob} with the same semantics as the
   * {@link LoggedJob} passed in this parameter
   * 
   * @param job
   *          The dead job this ZombieJob instance is based on.
   * @param cluster
   *          The cluster topology where the dead job ran on. This argument can
   *          be null if we do not have knowledge of the cluster topology.
   */

View on GitHub (pinned to 2add963021)

Solutions

1. Construct ZombieJob with a non-null ParsedJob; the job argument was null.

When it happens

Trigger: ZombieJob is constructed with a null ParsedJob, so there is no job story to simulate.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/743814062eda519a. Report an issue: GitHub.