Templating for configuration files
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Key: WHIRR-370
URL: https://issues.apache.org/jira/browse/WHIRR-370
Project: Whirr
Issue Type: Improvement
Reporter: Tom White
Service configuration is currently done via the Whirr properties file by using
a special per-service prefix (e.g. 'hadoop-common'). Using a templating
approach (using e.g. Velocity) would make changing properties more familiar to
users, and would make it easier for service implementors (since they wouldn't
need to implement a generator class for each configuration file).
It might even be possible to support the old syntax (so users can still
configure everything from one file if they wished) by, e.g., appending all
properties starting 'hadoop-common' to the core-site.xml template, etc.
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