apache/hadoop · error · IllegalArgumentException

No value for {key} found in conf file.

Error message

No value for {key} found in conf file.

What it means

Error "No value for {key} found in conf file." thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-azure-datalake/src/main/java/org/apache/hadoop/fs/adl/AdlFileSystem.java:950

   * Get replication.
   *
   * @param src file name
   * @return file replication
   * @deprecated Use getFileStatus() instead
   */
  @Deprecated
  public short getReplication(Path src) {
    return ADL_REPLICATION_FACTOR;
  }

  private Path makeAbsolute(Path path) {
    return path.isAbsolute() ? path : new Path(this.workingDirectory, path);
  }

  private static String getNonEmptyVal(Configuration conf, String key) {
    String value = conf.get(key);
    if (StringUtils.isEmpty(value)) {
      throw new IllegalArgumentException(
          "No value for " + key + " found in conf file.");
    }
    return value;
  }

  /**
   * A wrapper of {@link Configuration#getPassword(String)}. It returns
   * <code>String</code> instead of <code>char[]</code>.
   *
   * @param conf the configuration
   * @param key the property key
   * @return the password string
   * @throws IOException if the password was not found
   */
  private static String getPasswordString(Configuration conf, String key)
      throws IOException {
    char[] passchars = conf.getPassword(key);
    if (passchars == null) {

View on GitHub (pinned to 2add963021)

Solutions

1. Set the named key in the Hadoop configuration (core-site.xml or job conf).
2. Check the key spelling against the ADL configuration documentation.

When it happens

Trigger: A required ADL configuration key is absent from the configuration.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/14541632e2b48d3a. Report an issue: GitHub.