Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/899#discussion_r13418342
--- Diff:
yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala ---
@@ -309,7 +310,7 @@ trait ClientBase extends Logging {
// Add Xmx for AM memory
JAVA_OPTS += "-Xmx" + amMemory + "m"
- val tmpDir = new Path(Environment.PWD.$(),
YarnConfiguration.DEFAULT_CONTAINER_TEMP_DIR)
+ val tmpDir = new Path(Environment.PWD.$$(),
YarnConfiguration.DEFAULT_CONTAINER_TEMP_DIR)
--- End diff --
Perhaps the best compromise here is to use reflection?
Check whether those constants exist, and use them if they do. Otherwise
maintain current behavior. That way someone who has a 2.4-based installation
will get the benefits, and things will keep working as they do today for those
who don't.
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