We will see how to create a partitioned table in Hive and how to import data into the table. Partitioning We can use partitioning feature of Hive to divide a table into different partitions. Each partition of a table is associated with a particular value(s) of partition column(s). Partitioning allows…
We will see how to create a table in Hive using ORC format and how to import data into the table. ORC format ORC (Optimized Row Columnar) file format provides a highly efficient way to store Hive data. Using ORC format improves performance when reading, writing, and processing data in…
We will see how to create a table in Hive using SEQUENCEFILE format and how to import data into the table. Create table CREATE TABLE Employee( ID BIGINT, NAME STRING, AGE INT, SALARY BIGINT ) COMMENT ‘This is Employee table stored as sequencefile’ ROW FORMAT DELIMITED FIELDS TERMINATED BY ‘,’…
We will see how to create a table in Hive using TEXTFILE format and how to import data into the table. TEXTFILE Textfile format stores data as plain text files. Textfile format enables rapid development due to its simplicity but other file formats like ORC are much better when it comes…
In this article we will see how to run Hive queries through JDBC. We are using apache-hive-1.0.1 and hiveserver2 is running on port 10000 on localhost. Jars Required To access Hive through JDBC we need to add the following jars in the classpath:- guava-18.0.jar hive-common-1.0.0.jar hive-exec-0.13.0.jar hive-jdbc-1.0.0.jar hive-metastore-1.0.0.jar hive-serde-1.0.0.jar hive-service-1.0.0.jar…