Github user dyozie commented on a diff in the pull request: https://github.com/apache/incubator-hawq-docs/pull/59#discussion_r87913443 --- Diff: bestpractices/operating_hawq_bestpractices.html.md.erb --- @@ -4,6 +4,16 @@ title: Best Practices for Operating HAWQ This topic provides best practices for operating HAWQ, including recommendations for stopping, starting and monitoring HAWQ. +## <a id="best_practice_config"></a>Best Practices for Configuring HAWQ Parameters + +The HAWQ configuration guc/parameters are located in `$GPHOME/etc/hawq-site.xml`. This configuration file resides on all HAWQ instances and can be modified either by the Ambari interface or the command line. + +If you install and manage HAWQ using Ambari, use the Ambari interface for all configuration changes. Do not use command line utilities such as `hawq config` to set or change HAWQ configuration properties for Ambari-managed clusters. Configuration changes to `hawq-site.xml` made outside the Ambari interface will be overwritten when you restart or reconfigure HAWQ using Ambari. + +If you make changes using the command line interface, use a consistent `hawq-site.xml` file to configure your entire cluster. --- End diff -- Change this sentence to start: "If you manage your cluster using command-line tools instead of Ambari, then use a consistent ..."
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