How do you check the amount of data in each partition in Hive?

1 year ago
Sophia Anderson
2 minutes

You can view the data volume for each partition through the following methods:

  1. Enter the following command in the Hive command-line interface:
SHOW PARTITIONS table_name;

The table_name is the name of the table you want to view the data volume of the partitions for. This will display a list of all partitions in the table.

  1. Provide a detailed description.
DESCRIBE EXTENDED table_name PARTITION(partition_column);

The table_name is the name of the table whose partition data you want to view, and partition_column is the name of the partition column you want to see. This will display detailed information about the specified partition, including the amount of data.

  1. Choose the number of items
SELECT COUNT(*)
FROM table_name
WHERE partition_column = 'partition_value';

The table_name is the name of the table you want to check the amount of data in partitions for, the partition_column is the name of the partition column you want to check, and the partition_value is the value of the partition you want to look at. This will return the amount of data for the specified partition.

Please note that the above methods are applicable to distributed storage systems based on Hive, such as the Hadoop Distributed File System (HDFS). If you are using a different storage system, you may need to use the appropriate tools or query language to view the amount of partitioned data.

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