[MAPREDUCE-3190] bin/yarn should barf early if HADOOP_COMMON_HOME or HADOOP_HDFS_HOME are not set

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.0
• Component/s: mrv2
• Target Version/s: 0.23.0
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 14/Oct/11 18:22
• Updated: 15/Nov/11 00:48
• Resolved: 17/Oct/11 02:15

Description

Currently, if these env vars are not set when you run bin/yarn, it will crash with various ClassNotFoundExceptions, having added /share/hadoop/hdfs to the classpath. Rather, we should check for these env vars in the wrapper script and display a reasonable error message.