apache/spark — pull request #310 by aarondav (2014-04-03 03:34:15+00:00)
Title: SPARK-1404: Always upgrade spark-env.sh vars to environment vars

This was broken when spark-env.sh was made idempotent, as the idempotence check is an environment variable, but the spark-env.sh variables may not have been.

Tested in zsh, bash, and sh.