apache/hadoop · error · KeyProviderException

Unable to load key provider class {keyProviderClass}

Error message

Unable to load key provider class {keyProviderClass}

What it means

Error "Unable to load key provider class {keyProviderClass}" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AbfsConfiguration.java:1090

  }

  public String getStorageAccountKey() throws AzureBlobFileSystemException {
    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;

View on GitHub (pinned to 2add963021)

Solutions

1. Ensure the key provider class is on the classpath and named correctly in the configuration.

When it happens

Trigger: Thrown at hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AbfsConfiguration.java:1090 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/e5fd59bdeec08822. Report an issue: GitHub.