Github user ksakellis commented on a diff in the pull request: https://github.com/apache/spark/pull/4051#discussion_r23571472 --- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/ClientArguments.scala --- @@ -75,14 +75,23 @@ private[spark] class ClientArguments(args: Array[String], sparkConf: SparkConf) .orElse(sparkConf.getOption("spark.yarn.dist.archives").map(p => Utils.resolveURIs(p))) .orElse(sys.env.get("SPARK_YARN_DIST_ARCHIVES")) .orNull - // If dynamic allocation is enabled, start at the max number of executors + // If dynamic allocation is enabled, start at the configured initial number of executors. + // Default to minExecutors if no initialExecutors is set. if (isDynamicAllocationEnabled) { + val minExecutorsConf = "spark.dynamicAllocation.minExecutors" + val initialExecutorsConf = "spark.dynamicAllocation.initialExecutors" val maxExecutorsConf = "spark.dynamicAllocation.maxExecutors" - if (!sparkConf.contains(maxExecutorsConf)) { + val minNumExecutors = sparkConf.getInt(minExecutorsConf, 0) --- End diff -- Nit: indentation under if statement
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