spark JavaModuleOptions 源码

2022-10-20
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spark JavaModuleOptions 代码

文件路径：/launcher/src/main/java/org/apache/spark/launcher/JavaModuleOptions.java

/*
 * 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.spark.launcher;

/**
 * This helper class is used to place the all `--add-opens` options
 * required by Spark when using Java 17. `DEFAULT_MODULE_OPTIONS` has added
 * `-XX:+IgnoreUnrecognizedVMOptions` to be compatible with Java 8 and Java 11.
 *
 * @since 3.3.0
 */
public class JavaModuleOptions {
    private static final String[] DEFAULT_MODULE_OPTIONS = {
      "-XX:+IgnoreUnrecognizedVMOptions",
      "--add-opens=java.base/java.lang=ALL-UNNAMED",
      "--add-opens=java.base/java.lang.invoke=ALL-UNNAMED",
      "--add-opens=java.base/java.lang.reflect=ALL-UNNAMED",
      "--add-opens=java.base/java.io=ALL-UNNAMED",
      "--add-opens=java.base/java.net=ALL-UNNAMED",
      "--add-opens=java.base/java.nio=ALL-UNNAMED",
      "--add-opens=java.base/java.util=ALL-UNNAMED",
      "--add-opens=java.base/java.util.concurrent=ALL-UNNAMED",
      "--add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED",
      "--add-opens=java.base/sun.nio.ch=ALL-UNNAMED",
      "--add-opens=java.base/sun.nio.cs=ALL-UNNAMED",
      "--add-opens=java.base/sun.security.action=ALL-UNNAMED",
      "--add-opens=java.base/sun.util.calendar=ALL-UNNAMED",
      "--add-opens=java.security.jgss/sun.security.krb5=ALL-UNNAMED",
      "-Djdk.reflect.useDirectMethodHandle=false"};

    /**
     * Returns the default Java options related to `--add-opens' and
     * `-XX:+IgnoreUnrecognizedVMOptions` used by Spark.
     */
    public static String defaultModuleOptions() {
      return String.join(" ", DEFAULT_MODULE_OPTIONS);
    }
}

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本文标签： 大数据
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