Graham Gear created WHIRR-649:
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Summary: Make install_cdh_hadoop.sh idempotent, fast failing if
already run
Key: WHIRR-649
URL: https://issues.apache.org/jira/browse/WHIRR-649
Project: Whirr
Issue Type: Improvement
Affects Versions: 0.7.1
Reporter: Graham Gear
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).
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