Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/1845#discussion_r16428889
--- Diff:
core/src/main/scala/org/apache/spark/deploy/SparkSubmitDriverBootstrapper.scala
---
@@ -0,0 +1,122 @@
+/*
+ * 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.deploy
+
+import java.io.File
+
+import scala.collection.JavaConversions._
+
+import org.apache.spark.util.{RedirectThread, Utils}
+
+/**
+ * Launch an application through Spark submit in client mode with the
appropriate classpath,
+ * library paths, java options and memory. These properties of the JVM
must be set before the
+ * driver JVM is launched. The sole purpose of this class is to avoid
handling the complexity
+ * of parsing the properties file for such relevant configs in BASH.
+ *
+ * Usage: org.apache.spark.deploy.SparkSubmitDriverBootstrapper
<application args>
+ */
+private[spark] object SparkSubmitDriverBootstrapper {
+
+ // Note: This class depends on the behavior of `bin/spark-class` and
`bin/spark-submit`.
+ // Any changes made there must be reflected in this file.
+
+ def main(args: Array[String]): Unit = {
+ val submitArgs = args
+ val runner = sys.env("RUNNER")
+ val classpath = sys.env("CLASSPATH")
+ val javaOpts = sys.env("JAVA_OPTS")
+ val defaultDriverMemory = sys.env("OUR_JAVA_MEM")
+
+ // Spark submit specific environment variables
+ val deployMode = sys.env("SPARK_SUBMIT_DEPLOY_MODE")
+ val propertiesFile = sys.env("SPARK_SUBMIT_PROPERTIES_FILE")
+ val bootstrapDriver = sys.env("SPARK_SUBMIT_BOOTSTRAP_DRIVER")
+ val submitDriverMemory = sys.env.get("SPARK_SUBMIT_DRIVER_MEMORY")
+ val submitLibraryPath = sys.env.get("SPARK_SUBMIT_LIBRARY_PATH")
+ val submitClasspath = sys.env.get("SPARK_SUBMIT_CLASSPATH")
+ val submitJavaOpts = sys.env.get("SPARK_SUBMIT_JAVA_OPTS")
+
+ assume(runner != null, "RUNNER must be set")
+ assume(classpath != null, "CLASSPATH must be set")
+ assume(javaOpts != null, "JAVA_OPTS must be set")
+ assume(defaultDriverMemory != null, "OUR_JAVA_MEM must be set")
+ assume(deployMode == "client", "SPARK_SUBMIT_DEPLOY_MODE must be
\"client\"!")
+ assume(propertiesFile != null, "SPARK_SUBMIT_PROPERTIES_FILE must be
set")
+ assume(bootstrapDriver != null, "SPARK_SUBMIT_BOOTSTRAP_DRIVER must be
set!")
+
+ // Parse the properties file for the equivalent spark.driver.* configs
+ val properties = SparkSubmitArguments.getPropertiesFromFile(new
File(propertiesFile)).toMap
+ val confDriverMemory =
properties.get("spark.driver.memory").getOrElse(defaultDriverMemory)
+ val confLibraryPath =
properties.get("spark.driver.extraLibraryPath").getOrElse("")
+ val confClasspath =
properties.get("spark.driver.extraClassPath").getOrElse("")
+ val confJavaOpts =
properties.get("spark.driver.extraJavaOptions").getOrElse("")
+
+ // Favor Spark submit arguments over the equivalent configs in the
properties file.
+ // Note that we do not actually use the Spark submit values for
library path, classpath,
+ // and java opts here, because we have already captured them in BASH.
--- End diff --
Java opts and Bash
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