[root@hdp ~]# ambari-server start Using python /usr/bin/python2 Starting ambari-server Ambari Server running with administrator privileges. Organizing resource files at /var/lib/ambari-server/resources... Server PID at: /var/run/ambari-server/ambari-server.pid Server out at: /var/log/ambari-server/ambari-server.out Server log at: /var/log/ambari-server/ambari-server.log Waiting for server start.................... ERROR: Exiting with exit code -1. REASON: Ambari Server java process died with exitcode 1. Check /var/log/ambari-server/ambari-server.out for more information. [root@hdp ~]# ambari-agent start Verifying Python version compatibility... Using python /usr/bin/python2 Checking for previously running Ambari Agent... ERROR: ambari-agent already running Check /var/run/ambari-agent/ambari-agent.pid for PID. [root@hdp ~]# ambari-agent status Found ambari-agent PID: 3126 ambari-agent running. Agent PID at: /var/run/ambari-agent/ambari-agent.pid Agent out at: /var/log/ambari-agent/ambari-agent.out Agent log at: /var/log/ambari-agent/ambari-agent.log ... View more

Storage limit of NN and total storage capacity? ... View more

How to check the total amount of data present on a hdp Cluster? ... View more

I have a production cluster with physical server: One is active namenode other is standby name but i track the following things in my production cluster: if i navigate the HDFS and click on quick links then it shows nn01 is active and nn02 is standby namenode but if i navigate to Yarn and click on quick links it shows the reverse means nn01 is standby and nn02 is active namenode is these a problem or it happens a bigger issue in comings days.... ... View more

how much amount to be set heap memory size? It means heap memory size is depend on which factor? ... View more