[HADOOP-6950] Suggest that HADOOP_CLASSPATH should be preserved in hadoop-env.sh.template

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Fix Version/s: 0.22.0
• Component/s: scripts
• Hadoop Flags: Reviewed
• Assignee: Philip Martin
• Reporter: Philip Martin
• Created: 10/Sep/10 19:15
• Updated: 16/Sep/10 11:23
• Resolved: 16/Sep/10 02:35

Description

HADOOP_CLASSPATH tends to be used to add to bin/hadoop's classpath. Because of the way the comment is written, administrator's who customize hadoop-env.sh often inadvertently disable user's abilities to use it, by not including the present value of the variable.

I propose we change the commented out suggestion code to include the present value.

 # Extra Java CLASSPATH elements.  Optional.
-# export HADOOP_CLASSPATH=
+# export HADOOP_CLASSPATH="<extra_entries>:$HADOOP_CLASSPATH"