Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/299#discussion_r11720277
--- Diff:
yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala ---
@@ -333,15 +325,29 @@ trait ClientBase extends Logging {
if (useConcurrentAndIncrementalGC) {
// In our expts, using (default) throughput collector has severe
perf ramifications in
// multi-tenant machines
- JAVA_OPTS += " -XX:+UseConcMarkSweepGC "
- JAVA_OPTS += " -XX:+CMSIncrementalMode "
- JAVA_OPTS += " -XX:+CMSIncrementalPacing "
- JAVA_OPTS += " -XX:CMSIncrementalDutyCycleMin=0 "
- JAVA_OPTS += " -XX:CMSIncrementalDutyCycle=10 "
+ JAVA_OPTS += "-XX:+UseConcMarkSweepGC"
+ JAVA_OPTS += "-XX:+CMSIncrementalMode"
+ JAVA_OPTS += "-XX:+CMSIncrementalPacing"
+ JAVA_OPTS += "-XX:CMSIncrementalDutyCycleMin=0"
+ JAVA_OPTS += "-XX:CMSIncrementalDutyCycle=10"
}
- if (env.isDefinedAt("SPARK_JAVA_OPTS")) {
- JAVA_OPTS += " " + env("SPARK_JAVA_OPTS")
+ // TODO: it might be nicer to pass these as an internal environment
variable rather than
+ // as Java options, due to complications with string parsing of nested
quotes.
+ if (args.amClass == classOf[ExecutorLauncher].getName) {
+ // If we are being launched in client mode, forward the spark-conf
options
+ // onto the executor launcher
+ for ((k, v) <- sparkConf.getAll) {
+ JAVA_OPTS += "-D" + k + "=" + "\\\"" + v + "\\\""
--- End diff --
JAVA_OPTS is a sequence of strings, so the space gets inserted when the
sequence is joined inside of YARN.
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