I am using latest version of Hadoop & java as well. After configuring all the files for respective building blocks of hadoop (HDFS, mapreduce, yarn), I formatted the namenode and send the below command
sbin/start-all.sh
Post the enter, I typed in firefox browser http://localhost:50070/. I get 'unable to connect' error.
How do i access the Web UI for hadoop.
NOTE: I am currently using Ubuntu 18.04