[WHIRR-649] Make install_cdh_hadoop.sh idempotent, fast failing if already run

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7.1
• Fix Version/s: 0.8.1
• Assignee: Graham Gear
• Reporter: Graham Gear
• Created: 05/Sep/12 18:21
• Updated: 20/Sep/12 20:46
• Resolved: 20/Sep/12 20:46

Description

Currently, install_cdh_hadoop.sh does not check it has already run and return, unlike install_hadoop.sh.

This is inefficient for services that would like to install CDH components which have often already been installed (eg Cloudera Manager).