| /* |
| * 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.util; |
| |
| import java.util.concurrent.ThreadFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.ipc.NettyRpcClientConfigHelper; |
| import org.apache.hadoop.hbase.wal.NettyAsyncFSWALConfigHelper; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| import org.apache.hbase.thirdparty.io.netty.channel.Channel; |
| import org.apache.hbase.thirdparty.io.netty.channel.EventLoopGroup; |
| import org.apache.hbase.thirdparty.io.netty.channel.ServerChannel; |
| import org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup; |
| import org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollServerSocketChannel; |
| import org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollSocketChannel; |
| import org.apache.hbase.thirdparty.io.netty.channel.nio.NioEventLoopGroup; |
| import org.apache.hbase.thirdparty.io.netty.channel.socket.nio.NioServerSocketChannel; |
| import org.apache.hbase.thirdparty.io.netty.channel.socket.nio.NioSocketChannel; |
| import org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultThreadFactory; |
| |
| /** |
| * Event loop group related config. |
| */ |
| @InterfaceAudience.Private |
| public class NettyEventLoopGroupConfig { |
| |
| public static final String NETTY_WORKER_COUNT_KEY = "hbase.netty.worker.count"; |
| public static final int DEFAULT_NETTY_WORKER_COUNT = 0; |
| |
| public static final String NETTY_NATIVETRANSPORT_KEY = "hbase.netty.nativetransport"; |
| public static final boolean DEFAULT_NETTY_NATIVETRANSPORT = true; |
| |
| private final EventLoopGroup group; |
| |
| private final Class<? extends ServerChannel> serverChannelClass; |
| |
| private final Class<? extends Channel> clientChannelClass; |
| |
| private static boolean useEpoll(Configuration conf) { |
| // Config to enable native transport. |
| final boolean epollEnabled = |
| conf.getBoolean(NETTY_NATIVETRANSPORT_KEY, DEFAULT_NETTY_NATIVETRANSPORT); |
| // Use the faster native epoll transport mechanism on linux if enabled and the |
| // hardware architecture is either amd64 or aarch64. Netty is known to have native |
| // epoll support for these combinations. |
| return epollEnabled && JVM.isLinux() && (JVM.isAmd64() || JVM.isAarch64()); |
| } |
| |
| public NettyEventLoopGroupConfig(Configuration conf, String threadPoolName) { |
| final boolean useEpoll = useEpoll(conf); |
| final int workerCount = conf.getInt(NETTY_WORKER_COUNT_KEY, |
| // For backwards compatibility we also need to consider |
| // "hbase.netty.eventloop.rpcserver.thread.count" |
| // if it is defined in site configuration instead. |
| conf.getInt("hbase.netty.eventloop.rpcserver.thread.count", DEFAULT_NETTY_WORKER_COUNT)); |
| ThreadFactory eventLoopThreadFactory = |
| new DefaultThreadFactory(threadPoolName, true, Thread.MAX_PRIORITY); |
| if (useEpoll) { |
| group = new EpollEventLoopGroup(workerCount, eventLoopThreadFactory); |
| serverChannelClass = EpollServerSocketChannel.class; |
| clientChannelClass = EpollSocketChannel.class; |
| } else { |
| group = new NioEventLoopGroup(workerCount, eventLoopThreadFactory); |
| serverChannelClass = NioServerSocketChannel.class; |
| clientChannelClass = NioSocketChannel.class; |
| } |
| } |
| |
| public EventLoopGroup group() { |
| return group; |
| } |
| |
| public Class<? extends ServerChannel> serverChannelClass() { |
| return serverChannelClass; |
| } |
| |
| public Class<? extends Channel> clientChannelClass() { |
| return clientChannelClass; |
| } |
| |
| public static NettyEventLoopGroupConfig setup(Configuration conf, String threadPoolName) { |
| // Initialize netty event loop group at start as we may use it for rpc server, rpc client & WAL. |
| NettyEventLoopGroupConfig nelgc = new NettyEventLoopGroupConfig(conf, threadPoolName); |
| NettyRpcClientConfigHelper.setEventLoopConfig(conf, nelgc.group(), nelgc.clientChannelClass()); |
| NettyAsyncFSWALConfigHelper.setEventLoopConfig(conf, nelgc.group(), nelgc.clientChannelClass()); |
| return nelgc; |
| } |
| } |