Jan 12 in Big Data | Hadoop
Q: What is a Skewed table in Hive?

1 Answer

Jan 12

A Skewed tables is a special type of table in which some values in a column appear more often. Due to this the distribution in skewed. In Hive, when we specify a table as SKEWED during  creation, then skewed values are written into separate files and remaining values go to another file.

E.g. CREATE TABLE tableName (column1 STRING, column2



(column1) on (‘value1’)

During queries, we get better performance in Hive with SKEWED tables.

Click here to read more about Loan/Mortgage
Click here to read more about Insurance

Related questions

Apr 1 in Big Data | Hadoop
Jan 10 in Big Data | Hadoop
Sep 7, 2019 in Big Data | Hadoop