[jira] [Created] (YARN-9824) Fall back to configured queue ordering policy class name

["Jonathan Hung (Jira)" <ji...@apache.org>]

Jonathan Hung created YARN-9824:
-----------------------------------

             Summary: Fall back to configured queue ordering policy class name
                 Key: YARN-9824
                 URL: https://issues.apache.org/jira/browse/YARN-9824
             Project: Hadoop YARN
          Issue Type: Improvement
            Reporter: Jonathan Hung


Currently this is how configured queue ordering policy is determined:
{noformat}
if (policyType.trim().equals(QUEUE_UTILIZATION_ORDERING_POLICY)) {
  // Doesn't respect priority
  qop = new PriorityUtilizationQueueOrderingPolicy(false);
} else if (policyType.trim().equals(
    QUEUE_PRIORITY_UTILIZATION_ORDERING_POLICY)) {
  qop = new PriorityUtilizationQueueOrderingPolicy(true);
} else {
  String message =
      "Unable to construct queue ordering policy=" + policyType + " queue="
          + queue;
  throw new YarnRuntimeException(message);
} {noformat}
If we want to enable a policy which is not QUEUE_UTILIZATION_ORDERING_POLICY or QUEUE_PRIORITY_UTILIZATION_ORDERING_POLICY, it requires code change here to add a keyword for this policy.

It'd be easier if the admin could configure a class name here instead of requiring a keyword.



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