[AMBARI-2313] UI allows adding already existing properties to custom core-site.xml /hdfs-site.xml settings and creates confusion

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.4
• Fix Version/s: 1.2.5
• Assignee: Oleg Nechiporenko
• Reporter: Oleg Nechiporenko
• Created: 07/Jun/13 13:34
• Updated: 07/Jun/13 18:24
• Resolved: 07/Jun/13 18:24

Description

Steps:
1. Go to "Services" page.
2. Select "HDFS" service.
3. Select "Configs" tab.
4. Open "Custom core-site.xml" panel.
5. Add property with name "ipc.client.idlethreshold" to this panel.
Result:
Property with name "ipc.client.idlethreshold" was added to "Custom core-site.xml" panel. But there is already presented property with same name in "core-site.xml" file. After saving added property was disappeared from UI, and after service starting value of the old was changed to new (on UI and in "core-site.xml" file).
Expected result:
UI should not allow to add property with existing name in specified file.