What is not one of the 5 major Hive components?
What is MetaStore’s main job in Hive?
Store meta data about queries
Manage life cycle of the tables
Maintains query sessions
Store system catalog and meta data about tables
Hive’s Execution Engine
Enables integration with other applications
Performs column pruning
Processes MapReduce jobs
Partitions Data in HDFS
Hive provides one and only one interface to query and access the data
HiveQL ‘talks’ directly to HDFS
When we want to execute a specific Hive query what component does Driver ‘talk to’ first to obtain the plan?
What are the 3 major components of the Hive Data Model?
We can partition table at the creation time
Hive enables FULL OUTER JOINs
Creating BUCKETs is very important when
You have a very large data set and need to sample data
You have a very small data set and need to sample data
You have a very large data set and need to cluster data