@Nivas12 You can define an alert dispatcher which Ambari will invoke when alerts fire: Refer https://cwiki.apache.org/confluence/display/AMBARI/Creating+a+Script-based+Alert+Dispatcher ... View more

@saivenkatg55  Use the below commands to remove the background operation entry in ambari database.   # select task_id,role,role_command from host_role_command where status='IN_PROGRESS';   The above command will list all IN_PROGRESS status , You can also check for QUEUED or PENDING STATE by replacing 'IN_PROGRESS' with QUEUED or PENDING   # update host_role_command set status='ABORTED' where status='QUEUED'; Use the above command to change the state to ABORTED      ... View more

@Marek You need to install numpy package on all the node managers, Use below command to install numpy package and rerun the code.   # pip install numpy ... View more

@ashish_inamdar  can you confirm is ambari-server and ambari agent  is running as non-root user  ... View more

@shrikant_bm  Can you try changin "sun.security.krb5.disableReferrals=false" to "sun.security.krb5.disableReferrals=true" in java.security file under JDK HOME on namenode host Example: /usr/java/jdk1.8.0_252/jre/lib/security/java.security file.     ... View more

@shrikant_bm Can you confirm java version ... View more

@murali2425  Refer https://community.cloudera.com/t5/Community-Articles/Storing-Apache-NiFi-Versioned-Flows-in-a-Git-Repository/ta-p/248713 ... View more

@jeff_watson  To enable debug on superset logs, follow below steps Stop Superset from Ambari Add this line at the end of /usr/hdp/current/superset/lib/python3.4/site-packages/superset/__init.py   logging.getLogger('flask_appbuilder').setLevel(logging.DEBUG)   3. Then Start superset manually using following command    source /usr/hdp/current/superset/conf/superset-env.sh ; /usr/hdp/current/superset/bin/python3.4 /usr/hdp/current/superset/bin/gunicorn --log-level debug -b `hostname`:9088 superset:app     ... View more

@Manoj690 Check if their is any ranger policy or you can try disabling Authorization for HiveServer2 as follows: ### Ambari UI > Hive > Configs > Advanced > Advanced Hiveserver2-Site > Uncheck "Enable Authorization" Option > Restart Hive Service and run the query ... View more

@nicolamarangoni  can you share interpreter settings ... View more