@Manoj690    Try this:   First switch to "root" user using "su - "  then from "root" user account run the "su - hdfs" command. # su - # su - hdfs     ... View more

@vinodnerella  It depends based on the scenario that how much Heap you should be allocating for the Zookeeper. In your case if you are keep noticing that the Zookeeper heap is reaching to its max 1GB then it is better to increase the Zookeeper heap to a larger value and if needed then enable GC logging for zookeeper to monitor the gc usages in a period of time to findout the approximate heap that you need to setup for your zookeeper based on the environment requirement. As you have already set the Zookeeper heap to 4GB it should be good for now. We can monitor it for some time.   The common cause of Zookeeper OutOfMemory can be when clients submit requests faster than ZooKeeper can process them, especially if there are a lot of clients.  The it can lead to OOM errors.   You can also take a look into parameters like "zookeeper.snapCount"  but better to monitor Zookeeper with 4GB heap for some time before tuning such parameters.  ... View more

After following your suggestion, the problem seems to have been solved. ... View more

Thank you very much for your inputs. ... View more

Hi @cfarnes    Thanks for reply, I gave 28GB RAM to Virtual box to run CDA. ... View more

Perfect. Here's my solution based on your feedback.   - name: Check if Ambari setup has already run   command: grep 'jdbc' /etc/ambari-server/conf/ambari.properties   register: ambari_setup_check   check_mode: no   ignore_errors: yes   changed_when: no   - name: Setup Ambari server   command: printf '%s\n' y ambari y y n | ambari-server setup -j /usr/lib/jvm/java-8-  openjdk-amd64   become: yes   when: ambari_setup_check.rc == 1 ... View more

Can we use Ambari_helper concept to write the script to delete dead nodes from Ambari. Can please guide where Can  I get details about Ambari_helper classes?   ... View more