apache/hadoop · error · IOException

Problem removing " + name + " from " + this

Error message

Problem removing " + name + " from " + this

What it means

Thrown by deleteCredentialEntry() when KeyStore.deleteEntry(name) fails with KeyStoreException after the existence check passed. The keystore handle went bad between containsAlias() and deleteEntry() - typically an uninitialized/inconsistent KeyStore instance or an entry the provider cannot manipulate.

Source

Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/alias/AbstractJavaKeyStoreProvider.java:258

          + this, e);
    } finally {
      writeLock.unlock();
    }
  }

  @Override
  public void deleteCredentialEntry(String name) throws IOException {
    writeLock.lock();
    try {
      try {
        if (keyStore.containsAlias(name)) {
          keyStore.deleteEntry(name);
        } else {
          throw new IOException("Credential " + name + " does not exist in "
              + this);
        }
      } catch (KeyStoreException e) {
        throw new IOException("Problem removing " + name + " from " + this, e);
      }
      changed = true;
    } finally {
      writeLock.unlock();
    }
  }

  CredentialEntry innerSetCredential(String alias, char[] material)
      throws IOException {
    writeLock.lock();
    try {
      keyStore.setKeyEntry(alias,
          new SecretKeySpec(new String(material).getBytes(StandardCharsets.UTF_8),
              getAlgorithm()), password, null);
    } catch (KeyStoreException e) {
      throw new IOException("Can't store credential " + alias + " in " + this,
          e);
    } finally {

View on GitHub (pinned to 2add963021)

Solutions

1. Serialize writers: run only one hadoop credential/admin process against a keystore at a time
2. Verify the store with keytool -list -keystore <file> -storetype jceks and re-create if damaged
3. Retry the delete once after re-instantiating the provider (fresh URI + Configuration)

try {
  provider.deleteCredentialEntry(name);
} catch (IOException ex) {
  if (ex.getCause() instanceof java.security.KeyStoreException) {
    // rebuild provider from fresh Configuration and retry the delete exactly once;
    // persistent failure => store corrupt, restore from backup
  } else { throw ex; }
}

When it happens

Trigger: Concurrent modification of the keystore between check and delete; store loaded partially or of a type this JVM cannot fully handle; entry added by an external tool with attributes JCEKS cannot process.

Common situations: Two processes writing the same .jceks simultaneously (the file-level locking is not cross-process); keystore edited by keytool with a different store type while Hadoop holds it.

Related errors

• Can't get credential " + alias + " from " + getPathAsString(
• Can't get algorithm for credential " + alias + " from " + ge
• Can't recover credential " + alias + " from " + getPathAsStr
• Can't get alias " + alias + " from " + getPathAsString()
• Credential " + alias + " already exists in " + this

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/93e1e1fcd7a7db7a. Report an issue: GitHub.