Calculate Hive Table Data Size

1 year ago
William Carter
1 minute

To calculate the size of a Hive table’s data, you can use the following method:

  1. Use the DESCRIPTIVE EXTENDED command provided by Hive to view detailed information about the table, including the size of the data.
DESCRIBE EXTENDED table_name;
  1. Use the SHOW TABLE STATS command in Hive to view statistical information about a table, including data size and number of rows.
SHOW TABLE STATS table_name;
  1. Use the combination of the SUM and COUNT functions in Hive to calculate the number of rows in a table, thus indirectly determining the size of the data.
SELECT SUM(column_name) FROM table_name;
  1. Inspect the data file size of tables in the HDFS file system using HDFS commands in Hive.
hdfs dfs -du -s /path/to/table_location;

Using the above method, you can obtain information on the size of data in a Hive table.

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