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https://issues.apache.org/jira/browse/HAWQ-1372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15903675#comment-15903675
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ASF GitHub Bot commented on HAWQ-1372:
--------------------------------------
Github user dyozie commented on a diff in the pull request:
https://github.com/apache/incubator-hawq-docs/pull/97#discussion_r105217462
--- Diff: markdown/admin/ambari-admin.html.md.erb ---
@@ -368,6 +348,49 @@ All of the listed steps are mandatory. This ensures
that HAWQ service remains fu
4. Restart HAWQ service to propagate the configuration change to all
Ambari agents.
This will synchronize the password on the host machines with the
password that you specified in Ambari.
+
+## <a id="manual-cfg-norestart"></a>Updating HAWQ Configuration Without
Cluster Restart
+There may be circumstances, such as during dynamic cluster expansion, when
you must update HAWQ configuration parameters but cannot tolerate cluster
downtime in your Ambari-managed cluster. In these situations, perform the
following workaround to update and reload HAWQ configuration changes without a
complete cluster restart.
+
+**Note**: Use this procedure for setting or updating only those HAWQ
server configuration parameters with a set classification of reload.
--- End diff --
Need to style `reload` or at least quote it.
> doc ambari hawq config change procedure that does not require cluster restart
> -----------------------------------------------------------------------------
>
> Key: HAWQ-1372
> URL: https://issues.apache.org/jira/browse/HAWQ-1372
> Project: Apache HAWQ
> Issue Type: Improvement
> Components: Documentation
> Reporter: Lisa Owen
> Assignee: David Yozie
> Priority: Minor
>
> document the workaround for updating hawq configuration via ambari (for
> ambari-managed clusters) in cases where a complete cluster restart cannot be
> tolerated:
> update config via ambari, do not restart
> update config via "hawq config -c xxx -v xxx"
> hawq stop cluster --reload
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