/* * 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.hbase.ipc.controller; import java.util.List; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.CellScannable; import org.apache.hadoop.hbase.CellScanner; import org.apache.hadoop.hbase.ipc.HBaseRpcController; import org.apache.hadoop.hbase.ipc.RpcControllerFactory; /** * {@link RpcControllerFactory} that should only be used when making remote RPCs to the region * servers. This prevents deadlocks by having RS->RS traffic handled by higher priorities * queues. This controller factory shouldn't be globally configured anywhere and is meant to be * used only internally by Omid. */ public class InterRegionServerRpcControllerFactory extends RpcControllerFactory { public InterRegionServerRpcControllerFactory(Configuration conf) { super(conf); } @Override public HBaseRpcController newController() { HBaseRpcController delegate = super.newController(); return getController(delegate); } @Override public HBaseRpcController newController(CellScanner cellScanner) { HBaseRpcController delegate = super.newController(cellScanner); return getController(delegate); } @Override public HBaseRpcController newController(List<CellScannable> cellIterables) { HBaseRpcController delegate = super.newController(cellIterables); return getController(delegate); } private HBaseRpcController getController(HBaseRpcController delegate) { // construct a chain of controllers return new InterRegionServerRpcController(delegate, conf); } }