smartsense hdfs dashboard connection issue

[#1]

On HDP 2.5 smartsense 1.3 zeppelin instance for hdfs dashboards I am unable to see any reports. I see errors for each report:

java.net.ConnectException: Connection refused
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)

any insights?

[#2 · Accepted solution]

@Sunile Manjee, is your Ambari Metrics Service running ? (specifically Ambari Metric Collector)?

You may want to try restarting AMS Collector and then restart Activity Explorer.