What are the main components of Query Processor in Apache Hive?

The main components of Apache Hive Query Processor are as follows: Parse and SemanticAnalysis (ql/parse) Optimizer (ql/optimizer) Plan Components (ql/plan)

How will you resolve an out of memory error while running a JOIN query?

In case of JOIN query with large tables, we have a lot of data in memory. This can cause out

What are the different SerDe implementations in Hive?

There are many implementations of SerDe in Hive. We can also write our own custom SerDe implementation. Some of the

What is the use of IF EXISTS clause in Hive statements?

We use IF EXISTS clause in DROP TABLE statement. When we drop a table, there can be a case that