what is the username and password for beeline

[#1]

I am using cloudera VB. I am trying to login to beeline. I tried the username and passwod (empty) but it's not working :-

!connect jdbc:hive2://localhost:10000/
Connecting to jdbc:hive2://localhost:10000/
Enter username for jdbc:hive2://localhost:10000/:
Enter password for jdbc:hive2://localhost:10000/:
Error: Could not open client transport with JDBC Uri: jdbc:hive2://localhost:10000/: java.net.ConnectException: Connection refused (state=08S01,code=0)
0: jdbc:hive2://localhost:10000/ (closed)>

@ 

[cloudera@quickstart ~]$ beeline
2019-10-09 17:06:46,217 WARN [main] mapreduce.TableMapReduceUtil: The hbase-prefix-tree module jar containing PrefixTreeCodec is not present. Continuing without it.
Beeline version 1.1.0-cdh5.7.0 by Apache Hive
beeline> !connect jdbc:hive2://localhost:10000/
scan complete in 5ms
Connecting to jdbc:hive2://localhost:10000/
Enter username for jdbc:hive2://localhost:10000/: hadoop
Enter password for jdbc:hive2://localhost:10000/:
Error: Could not open client transport with JDBC Uri: jdbc:hive2://localhost:10000/: java.net.ConnectException: Connection refused (state=08S01,code=0)
0: jdbc:hive2://localhost:10000/ (closed)>

Can someone know the username and password to login to beeline. I have checked hive metastore and hive server2. it's working :-

[cloudera@quickstart ~]$ sudo service hive-metastore status
Hive Metastore is running

[cloudera@quickstart ~]$ sudo service hive-server2 status
Hive Server2 is running [ OK ]

[#2 · Accepted solution]

I have solved the issue. My Namenode was in safe mode. So i have turned off safe mode by using :- hadoop dfsadmin -safemode leave