[BIGTOP-843] It would be really cool if bigtop-detect-javahome were smarter and didn't pick a 32-bit JVM, or a 1.7 JVM set with default

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.6.0
• Component/s: general
• Assignee: Mark Grover
• Reporter: Robert Justice
• Created: 07/Feb/13 06:10
• Updated: 21/Jun/13 23:49
• Resolved: 28/Mar/13 21:35

Description

I see more and more folks with whacked versions of java configured in /usr/java/default or /usr/lib/jvm/default-java that are pointing to 32-bit JVMs or are simply not even a 1.6 JVM. I was wondering if we could do a bit more intelligence in this script and run a java -version to rule out a 32-bit JVM or a 1.7 JDK? Or would that be too error prone?

if [ -z "$JAVA_HOME" ]; then
for candidate in \
/usr/lib/jvm/java-6-sun \
/usr/lib/jvm/java-1.6.0-sun-1.6.0.*/jre/ \
/usr/lib/jvm/java-1.6.0-sun-1.6.0.* \
/usr/lib/jvm/j2sdk1.6-oracle \
/usr/lib/jvm/j2sdk1.6-oracle/jre \
/usr/lib/j2sdk1.6-sun \
/usr/java/jdk1.6* \
/usr/java/jre1.6* \
/Library/Java/Home \
/usr/java/default \
/usr/lib/jvm/default-java \
/usr/lib/jvm/java-openjdk \
/usr/lib/jvm/jre-openjdk \
/usr/lib/jvm/java-1.6.0-openjdk-1.6.* \
/usr/lib/jvm/jre-1.6.0-openjdk* ; do
if [ -e $candidate/bin/java ]; then
export JAVA_HOME=$candidate
break
fi
done
fi