Hi,   Please check for the Heap memory of the Spark history server. Based on the load size, the memory can be increased.   Thanks AK ... View more

Recently ran into same issue where we were getting alerts for all the UIs. The root cause ended up being the times on the nodes were not correct. After fixing the time and restarting ambari server/agents and all services, the alerts went away ... View more

@mqureshi , Thanks for answer. It makes sense. Regards, Fahim ... View more

Hi Hdave , You should pickup one tool at a time. for example take Hive. Below are high level steps. 1. Upload your csv files from your local system to HDFS file system. Hint : Use PUT command 2. Launch hive - Hint - Beeline 3. Create hive table as per CSV columns. 4. Load CSV file into table. 5. Query table from HIVE CLI or Beeline. Once this is done , please pick up another tool and try same. Regards, Fahim ... View more