apache/hadoop · error · HadoopIllegalArgumentException

"The policy name " + name + " does not exist"

Error message

"The policy name " + name + " does not exist"

What it means

Error ""The policy name " + name + " does not exist"" thrown in apache/hadoop.

Source

Thrown at hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ErasureCodingPolicyManager.java:373

  }

  private byte getCurrentMaxPolicyID() {
    return policiesByID.keySet().stream().max(Byte::compareTo).orElse((byte)0);
  }

  private byte getNextAvailablePolicyID() {
    byte nextPolicyID = (byte)(getCurrentMaxPolicyID() + 1);
    return nextPolicyID > ErasureCodeConstants.USER_DEFINED_POLICY_START_ID ?
        nextPolicyID : ErasureCodeConstants.USER_DEFINED_POLICY_START_ID;
  }

  /**
   * Remove an User erasure coding policy by policyName.
   */
  public synchronized void removePolicy(String name) {
    final ErasureCodingPolicyInfo info = policiesByName.get(name);
    if (info == null) {
      throw new HadoopIllegalArgumentException("The policy name " +
          name + " does not exist");
    }

    final ErasureCodingPolicy ecPolicy = info.getPolicy();
    if (ecPolicy.isSystemPolicy()) {
      throw new HadoopIllegalArgumentException("System erasure coding policy " +
          name + " cannot be removed");
    }

    if (enabledPoliciesByName.containsKey(name)) {
      enabledPoliciesByName.remove(name);
      enabledPolicies =
          enabledPoliciesByName.values().toArray(new ErasureCodingPolicy[0]);
    }
    info.setState(ErasureCodingPolicyState.REMOVED);
    LOG.info("Remove erasure coding policy " + name);
    allPersistedPolicies.put(ecPolicy.getId(),
        createPolicyInfo(ecPolicy, ErasureCodingPolicyState.REMOVED));

View on GitHub (pinned to 2add963021)

Solutions

1. Check the policy name with 'hdfs ec -listPolicies' and retry with an existing name.
2. Add the policy first with 'hdfs ec -addPolicies' before enabling/removing it.

When it happens

Trigger: Enabling, disabling, or removing an erasure coding policy by a name that is not registered in ErasureCodingPolicyManager.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/fff379d5ae668998. Report an issue: GitHub.