Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/2350#discussion_r17396989
--- Diff:
yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientArguments.scala
---
@@ -35,28 +34,57 @@ class ClientArguments(val args: Array[String], val
sparkConf: SparkConf) {
var executorMemory = 1024 // MB
var executorCores = 1
var numExecutors = 2
- var amQueue = sparkConf.get("QUEUE", "default")
+ var amQueue = sparkConf.get("spark.yarn.queue", "default")
var amMemory: Int = 512 // MB
var appName: String = "Spark"
var priority = 0
- parseArgs(args.toList)
+ // Additional memory to allocate to containers
+ // For now, use driver's memory overhead as our AM container's memory
overhead
+ val amMemoryOverhead = sparkConf.getInt(
+ "spark.yarn.driver.memoryOverhead",
YarnSparkHadoopUtil.DEFAULT_MEMORY_OVERHEAD)
+ val executorMemoryOverhead = sparkConf.getInt(
+ "spark.yarn.executor.memoryOverhead",
YarnSparkHadoopUtil.DEFAULT_MEMORY_OVERHEAD)
- // env variable SPARK_YARN_DIST_ARCHIVES/SPARK_YARN_DIST_FILES set in
yarn-client then
- // it should default to hdfs://
- files =
Option(files).getOrElse(sys.env.get("SPARK_YARN_DIST_FILES").orNull)
- archives =
Option(archives).getOrElse(sys.env.get("SPARK_YARN_DIST_ARCHIVES").orNull)
+ parseArgs(args.toList)
+ loadDefaultArgs()
+ validateArgs()
+
+ /** Load any default arguments provided through environment variables
and Spark properties. */
+ private def loadDefaultArgs(): Unit = {
+ // For backward compatibility, SPARK_YARN_DIST_{ARCHIVES/FILES} should
be resolved to hdfs://,
+ // while spark.yarn.dist.{archives/files} should be resolved to
file:// (SPARK-2051).
+ files =
Option(files).orElse(sys.env.get("SPARK_YARN_DIST_FILES")).orNull
+ files = Option(files)
+ .orElse(sparkConf.getOption("spark.yarn.dist.files"))
+ .map(p => Utils.resolveURIs(p))
+ .orNull
+ archives =
Option(archives).orElse(sys.env.get("SPARK_YARN_DIST_ARCHIVES")).orNull
+ archives = Option(archives)
+ .orElse(sparkConf.getOption("spark.yarn.dist.archives"))
+ .map(p => Utils.resolveURIs(p))
+ .orNull
+ }
- // spark.yarn.dist.archives/spark.yarn.dist.files defaults to use
file:// if not specified,
- // for both yarn-client and yarn-cluster
- files =
Option(files).getOrElse(sparkConf.getOption("spark.yarn.dist.files").
- map(p => Utils.resolveURIs(p)).orNull)
- archives =
Option(archives).getOrElse(sparkConf.getOption("spark.yarn.dist.archives").
- map(p => Utils.resolveURIs(p)).orNull)
+ /**
+ * Fail fast if any arguments provided are invalid.
+ * This is intended to be called only after the provided arguments have
been parsed.
+ */
+ private def validateArgs(): Unit = {
+ Map[Boolean, String](
+ (numExecutors <= 0) -> "You must specify at least 1 executor!",
+ (amMemory <= amMemoryOverhead) -> s"AM memory must be >
$amMemoryOverhead MB",
+ (executorMemory <= executorMemoryOverhead) ->
+ s"Executor memory must be > $executorMemoryOverhead MB"
--- End diff --
@tgraves You had a few comments about a few of these checks being outdated
in a separate PR. Which ones should I remove?
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