Ambari-metrics collector is stopping constantly

We have an HDP 3.1.0 cluster (single node) without Hbase.

The ambari-metrics-collector is constantly stopping with the following error

2020-01-13 22:09:55,247 INFO org.apache.hadoop.hbase.client.RpcRetryingCallerImpl: Call exception, tries=6, retries=16, started=4195 ms ago, cancelled=false, msg=org.apache.hadoop.hbase.NotServingRegionException: METRIC_AGGREGATE_UUID,<^\xC6\xEA\x9A\x7F^\x02\x8C\x98\xE5\xCD\x83\xAC\xEC\xDB\x00\x00\x00\x00\x00\x00\x00\x00,1556526940170.07aab84f4d80a29d771d895a77185269. is not online on xxxxxxx,61320,1578982133933
        at org.apache.hadoop.hbase.regionserver.HRegionServer.getRegionByEncodedName(HRegionServer.java:3273)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:3250)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.getRegion(RSRpcServices.java:1414)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.newRegionScanner(RSRpcServices.java:2964)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3301)
        at org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:42002)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:131)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304)
, details=row 'a�^T}^NK�+`�u�h��^@^Ao�u=0' on table 'METRIC_AGGREGATE_UUID' at region=METRIC_AGGREGATE_UUID,<^\xC6\xEA\x9A\x7F^\x02\x8C\x98\xE5\xCD\x83\xAC\xEC\xDB\x00\x00\x00\x00\x00\x00\\
x00\x00,1556526940170.07aab84f4d80a29d771d895a77185269., hostname=xxxxxx,61320,1563230648592, seqNum=103729

I have a couple of questions.

1. Is Hbase a mandatory service for clusters running hdp 3.1.0 +?

2. How do we recreate missing/accidentally deleted znodes like ams-hbase-secure znode in zookeeper? Which component handles this. Many components throw errors like NoNode for xxxxx in zookeeper

3. We tried renaming the znode parent path in config but to no luck. 

Any help would be appreciated.