apache/hadoop · error · IOException

Key ${name} does not exist in ${this}

Error message

Key ${name} does not exist in ${this}

What it means

Error "Key ${name} does not exist in ${this}" thrown in apache/hadoop.

Source

Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/UserProvider.java:106

    }
    if (options.getBitLength() != 8 * material.length) {
      throw new IOException("Wrong key length. Required " +
          options.getBitLength() + ", but got " + (8 * material.length));
    }
    Metadata meta = new Metadata(options.getCipher(), options.getBitLength(),
        options.getDescription(), options.getAttributes(), new Date(), 1);
    cache.put(name, meta);
    String versionName = buildVersionName(name, 0);
    credentials.addSecretKey(nameT, meta.serialize());
    credentials.addSecretKey(new Text(versionName), material);
    return new KeyVersion(name, versionName, material);
  }

  @Override
  public synchronized void deleteKey(String name) throws IOException {
    Metadata meta = getMetadata(name);
    if (meta == null) {
      throw new IOException("Key " + name + " does not exist in " + this);
    }
    for(int v=0; v < meta.getVersions(); ++v) {
      credentials.removeSecretKey(new Text(buildVersionName(name, v)));
    }
    credentials.removeSecretKey(new Text(name));
    cache.remove(name);
  }

  @Override
  public synchronized KeyVersion rollNewVersion(String name,
                                    byte[] material) throws IOException {
    Metadata meta = getMetadata(name);
    if (meta == null) {
      throw new IOException("Key " + name + " not found");
    }
    if (meta.getBitLength() != 8 * material.length) {
      throw new IOException("Wrong key length. Required " +
          meta.getBitLength() + ", but got " + (8 * material.length));

View on GitHub (pinned to 2add963021)

Solutions

1. Create the key first (createKey) before requesting its metadata or material.

Example fix

provider.createKey(name, options) then getKeyVersion.

When it happens

Trigger: Raised at runtime when the documented precondition or configuration requirement for this operation is violated.

Common situations: Misconfigured or missing property, invalid user input, or calling the API before its prerequisites are met.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/1b556b26525c2143. Report an issue: GitHub.