/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.shims;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
/**
* Shim for Fair scheduler
* HiveServer2 uses fair scheduler API to resolve the queue mapping for non-impersonation
* mode. This shim is avoid direct dependency of yarn fair scheduler on Hive.
*/
public interface SchedulerShim {
/**
* Reset the default fair scheduler queue mapping to end user.
* @param conf
* @param userName end user name
*/
public void refreshDefaultQueue(Configuration conf, String userName)
throws IOException;
}