[jira] [Created] (YARN-4547) LeagQueue#getApplications() is read-only interface, but it provides reference to caller

["Rohith Sharma K S (JIRA)" <ji...@apache.org>]

Rohith Sharma K S created YARN-4547:
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             Summary: LeagQueue#getApplications() is read-only interface, but it provides reference to caller
                 Key: YARN-4547
                 URL: https://issues.apache.org/jira/browse/YARN-4547
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacity scheduler
            Reporter: Rohith Sharma K S
            Assignee: Rohith Sharma K S


The below API is read-only interface, but returning reference to the caller. This causing caller to modify the orderingPolicy entities. If required reference of ordering policy, caller can use {{LeagQueue#getOrderingPolicy()#getSchedulableEntities()}}
{code}
  /**
   * Obtain (read-only) collection of active applications.
   */
  public Collection<FiCaSchedulerApp> getApplications() {
    return orderingPolicy.getSchedulableEntities();
  }
{code}



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