[HADOOP-9044] add FindClass main class to provide classpath checking of installations

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 3.0.0-alpha1
• Component/s: util
• Assignee: Steve Loughran
• Reporter: Steve Loughran
• Created: 15/Nov/12 11:46
• Updated: 12/May/16 18:23
• Resolved: 05/Feb/15 18:45

Description

It's useful in postflight checking of a hadoop installation to verify that classes load, especially codes with external JARs and native codecs.

An entry point designed to load a named class and create an instance of that class can do this -and be invoked from any shell script or tool that does the installation.

Issue Links

• relates to: HADOOP-10623 Provide a utility to be able inspect the config as seen by a hadoop client / daemon