[SPARK-778] run script should try java executable from JAVA_HOME first

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7.2
• Fix Version/s: 0.7.3, 0.8.0
• Assignee: Unassigned Assign to me
• Reporter: Josh Rosen
• Created: 17/Jun/13 11:28
• Updated: 27/Jun/13 22:19
• Resolved: 27/Jun/13 22:19

Description

See https://groups.google.com/d/msg/spark-users/uuw2e9d1l74/_bCyDfq6dywJ;

It looks like the script tries to run `java` first and falls back on `$JAVA_HOME/bin/java` only if `java` cannot be found. This should probably be the other way around, trying $JAVA_HOME first. This is important for supporting users with multiple JDKs.

We should probably do the same thing for $SCALA_HOME, checking for a user-supplied SCALA_HOME before falling back on `scala`.