@sivareddy akkala - It is really not a good idea to delete a service once the Upgrade is started. As it might create DB corruption and pending item in the scheduled upgrade tasks items/upgrade groups. - Is there any specific reason you deleted that service? - Also which kind of upgrade are you performing? (Rolling or Express Upgrade)? - Have you run the pre-upgrade service checks (Ambari usually asks when we start performing upgrade) ? - Can you also share the output of the following URLs? http://<ambari_server>:8080/api/v1/clusters/<cluster_name>/upgrades In the above URL whatever is the latest <upgrade_id> take that value and form the following kind of URL and then share that output as well: http://<ambari_server>:8080/api/v1/clusters/<cluster_name>/upgrades/<upgrade_id>?fields=upgrade_groups/upgrade_items/tasks/Tasks/status,upgrade_groups/upgrade_items/tasks/Tasks/command_detail,upgrade_groups/upgrade_items/tasks/Tasks/stderr,upgrade_groups/upgrade_items/tasks/Tasks/host_name . ... View more

@sivareddy akkala Please login to Amabri UI and navigate to: Ambari UI -> Hive -> Configs -> Filter, check jars listed in property "templeton.libjars" And then change the value as following then restart the services that needs required restart in the ambari UI. templeton.libjars= /usr/hdp/${hdp.version}/zookeeper/zookeeper.jar,/usr/hdp/${hdp.version}/hive/lib/hive-common.jar . You can also find the HCC article on similar line: https://community.hortonworks.com/articles/15958/templetonlibjars-property-changed-its-value-after.html ... View more

@Bharadwaj Bhimavarapu Based on the thread title you want to know how to get components status (running,stopped) from ambari REST API's? However later you mentioned that "you want to read Ambari alerts through NIFI using REST API's", Can you please clarify which alert are you getting and Are you sure that you want to read the component status from Alerts? - If you simply want to read the component status (like NIFI) then you can make the following kind of REST Curl call: curl -u admin:admin -H "X-Requested-By:ambari" -i -X GET http://localhost:8080/api/v1/clusters/Sandbox/hosts/sandbox.hortonworks.com/host_components/NIFI_MASTER . OR more precisely curl -u admin:admin -H "X-Requested-By:ambari" -i -X GET http://localhost:8080/api/v1/clusters/Sandbox/hosts/sandbox.hortonworks.com/host_components/NIFI_MASTER?fields=HostRoles/component_name,HostRoles/host_name,HostRoles/state,HostRoles/service_name Example output will be something like: . ... View more