Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/3916#discussion_r25308729
--- Diff:
launcher/src/main/java/org/apache/spark/launcher/package-info.java ---
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+/**
+ * Library for launching Spark applications.
+ * <p/>
+ * This library allows applications to launch Spark programmatically.
There's only one entry
+ * point to the library - the {@link
org.apache.spark.launcher.SparkLauncher} class.
+ * <p/>
+ * To launch a Spark application, just instantiate a {@link
org.apache.spark.launcher.SparkLauncher}
+ * and configure the application to run. For example:
+ *
+ * <pre>
+ * {@code
+ * import org.apache.spark.launcher.SparkLauncher;
+ *
+ * public class MyLauncher {
+ * public static void main(String[] args) throws Exception {
+ * Process spark = new SparkLauncher()
+ * .setAppResource("/my/app.jar")
+ * .setMainClass("my.spark.app.Main")
+ * .setMaster("local")
+ * .setConf(SparkLauncher.DRIVER_MEMORY, "2g")
+ * .launch();
+ * spark.waitFor();
+ * }
+ * }
+ * }
+ * </pre>
+ */
+package org.apache.spark.launcher;
--- End diff --
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