How tables in Hive are managed?

Question

Managed tables are Hive owned tables where the entire lifecycle of the tables' data are managed and controlled by Hive. External tables are tables where Hive has loose coupling with the data. All the write operations to the Managed tables are performed using Hive SQL commands.

How are tables used in Hive?

In a managed table, both the table data and the table schema are managed by Hive. The data will be located in a folder named after the table within the Hive data warehouse, which is essentially just a file location in HDFS. The location is user-configurable when Hive is installed.

How do I create a managed table in Hive?

Steps:1Create a table called nyse in hive and load data from your home folder in the web console. Login to the web console. ... 2Create a table called nyse_hdfs in hive and load data from your home folder in HDFS. Copy NYSE_daily dataset from data directory in HDFS to your home directory in HDFS.Hive - Managed Tables - Hands-on - CloudxLab

How do I find managed tables in Hive?

For external tables Hive assumes that it does not manage the data. Managed or external tables can be identified using the DESCRIBE FORMATTED table_name command, which will display either MANAGED_TABLE or EXTERNAL_TABLE depending on table type.

How are Hive tables stored?

Hive stores tables files by default at /user/hive/warehouse location on HDFS file system. You need to create these directories on HDFS before you use Hive. On this location, you can find the directories for all databases you create and subdirectories with the table name you use.

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