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https://issues.apache.org/jira/browse/WHIRR-649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13449102#comment-13449102
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Graham Gear edited comment on WHIRR-649 at 9/6/12 7:37 AM:
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Actually, I can see now from the code that the install pipeline is protected
from running a script multiple times so this is not an issue.
This does however optimise install_cdh* scripts that require base CDH
installations (eg HBase/YARN etc), once updated to also check
INSTALL_HADOOP_DONE, so is still a worthwhile patch.
was (Author: graham.gear):
Actually, I can see now from the code that the install pipeline is
protected from running a script multiple times so this is not an issue.
This does however optimise install_cdh* scripts that require base CDH
installations (eg HBase/YARN etc) so is still a worthwhile patch, once updated
to also check INSTALL_HADOOP_DONE.
> 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
> Attachments: WHIRR-649.patch
>
>
> 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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