apache/hadoop · error · KeyProviderException

{keyProviderClass} specified in config is not a valid KeyPro

Error message

{keyProviderClass} specified in config is not a valid KeyProvider class.

What it means

Error "{keyProviderClass} specified in config is not a valid KeyProvider class." thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AbfsConfiguration.java:1093

    String key;
    String keyProviderClass = get(AZURE_KEY_ACCOUNT_KEYPROVIDER);
    KeyProvider keyProvider;

    if (keyProviderClass == null) {
      // No key provider was provided so use the provided key as is.
      keyProvider = new SimpleKeyProvider();
    } else {
      // create an instance of the key provider class and verify it
      // implements KeyProvider
      Object keyProviderObject;
      try {
        Class<?> clazz = rawConfig.getClassByName(keyProviderClass);
        keyProviderObject = clazz.newInstance();
      } catch (Exception e) {
        throw new KeyProviderException("Unable to load key provider class " + keyProviderClass, e);
      }
      if (!(keyProviderObject instanceof KeyProvider)) {
        throw new KeyProviderException(keyProviderClass
                + " specified in config is not a valid KeyProvider class.");
      }
      keyProvider = (KeyProvider) keyProviderObject;
    }
    key = keyProvider.getStorageAccountKey(accountName, rawConfig);

    if (key == null) {
      throw new ConfigurationPropertyNotFoundException(accountName);
    }

    return key;
  }

  public Configuration getRawConfiguration() {
    return this.rawConfig;
  }

  public int getWriteBufferSize() {

View on GitHub (pinned to 2add963021)

Solutions

1. Configure a class that implements KeyProvider for the ABFS key provider configuration key.

When it happens

Trigger: Thrown at hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AbfsConfiguration.java:1093 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/955e94c872a39a89. Report an issue: GitHub.