[AMBARI-20197] RestMetricsPropertyProvider support nested JSON metrics

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.4.2
• Component/s: metrics
• Assignee: Unassigned
• Reporter: Kevin Risden
• Created: 25/Feb/17 22:42
• Updated: 03/Mar/17 15:00

Description

Attempting to use the RestMetricsPropertyProvider with nested metrics results in a ClassCastException.

Caused by: java.lang.ClassCastException: com.google.gson.internal.StringMap cannot be cast to com.google.gson.JsonElement
 	at org.apache.ambari.server.controller.metrics.RestMetricsPropertyProvider.extractValuesFromJSON(RestMetricsPropertyProvider.java:472)

Based on reading the code, this should be supported by using the # path splitter.