Github user radarwave commented on the issue:
https://github.com/apache/incubator-hawq/pull/1254
Thanks @outofmem0ry to contribute this, please check below comments.
1. I think we should keep the legacy command to do reload in case it's hard
coded in some user cases, print a deprecated message should be fine.
2. Make sure all the related help messages and documents are updated.
3. Chose a proper name for this option before user start to use it,
'reload' or 'reload-config' or something else?
4. Add test for this option.
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