hi all we have ambari cluster with HDP version 2.6.0 when we try to start the metrics collector from ambari , we get the following logs: 2019-01-02 06:35:16,406 ERROR org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher: hconnection-0x4bdeaabb-0x1680d44c1810001, quorum=master02.sys32.com:61181, baseZNode=/ams-hbase-unsecure Received unexpected KeeperException, re-throwing exception
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /ams-hbase-unsecure/table/SYSTEM.CATALOG
at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1212)
at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.getData(RecoverableZooKeeper.java:354)
at org.apache.hadoop.hbase.zookeeper.ZKUtil.getData(ZKUtil.java:622)
2019-01-02 06:35:18,256 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server master02.sys32.com/101.23.98.60:61181. Will not attempt to authenticate using SASL (unknown error)
2019-01-02 06:35:18,257 WARN org.apache.zookeeper.ClientCnxn: Session 0x1680d44c1810001 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)
2019-01-02 06:35:19,656 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server master02.sys32.com/101.23.98.60:61181. Will not attempt to authenticate using SASL (unknown error) we also clear the contents of /var/lib/ambari-metrics-collector/hbase-tmp/zookeeper/* and restart Ambari metrics collector , but this not help what else we can do in order to solve this isshue ?
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