E090 RA040 I/O error while requesting Ambari [AmbariApiException]

[#1]

ISSUE: After enabling Ambari SSL Hive views stopped working.

ERROR:

08 Nov 2016 11:32:23,330  WARN [qtp-ambari-client-263] nio:720 - javax.net.ssl.SSLException: Received fatal alert: certificate_unknown

08 Nov 2016 11:32:23,331 ERROR [qtp-ambari-client-256] ServiceFormattedException:100 - org.apache.ambari.view.utils.ambari.AmbariApiException: RA040 I/O error while requesting Ambari
org.apache.ambari.view.utils.ambari.AmbariApiException: RA040 I/O error while requesting Ambari
at org.apache.ambari.view.utils.ambari.AmbariApi.requestClusterAPI(AmbariApi.java:176)
at org.apache.ambari.view.utils.ambari.AmbariApi.requestClusterAPI(AmbariApi.java:142)
at org.apache.ambari.view.utils.ambari.AmbariApi.getHostsWithComponent(AmbariApi.java:99)
at org.apache.ambari.view.hive.client.ConnectionFactory.getHiveHost(ConnectionFactory.java:79)
at org.apache.ambari.view.hive.client.ConnectionFactory.create(ConnectionFactory.java:68)
at org.apache.ambari.view.hive.client.UserLocalConnection.initialValue(UserLocalConnection.java:42)
at org.apache.ambari.view.hive.client.UserLocalConnection.initialValue(UserLocalConnection.java:26)
at org.apache.ambari.view.utils.UserLocal.get(UserLocal.java:66)
at org.apache.ambari.view.hive.resources.browser.HiveBrowserService.databases(HiveBrowserService.java:87)
at sun.reflect.GeneratedMethodAccessor186.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)

Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

        at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
        at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1949)
        at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:302)
        at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296)
        at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1509)
        at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216)

Root Cause: Truststore configuration for Ambari Server was missing.

Resolution: Setup the trustore for ambari server as per link below after which above issue was resolved.

https://docs.hortonworks.com/HDPDocuments/Ambari-2.1.2.1/bk_Ambari_Security_Guide/content/_set_up_tr...