01-24-2017 09:26 PM
I have an external table which is created with partitions and i would like to delete/drop few partition along with data as i no longer require it.
Appreciate any suggestions.
01-27-2017 12:42 AM
Did you try to drop the partition using Hive query ? It should look like this :
ALTER TABLE <table_name> DROP PARTITION (<partition_col_name>='<value>');
If it does not delete the data you will need to delete the directory of the partition (in HDFS) after deleting it using the Hive query.
01-12-2018 09:18 AM - edited 01-12-2018 09:19 AM
You can use PURGE option to delete data file as well along with partition mentadata but it works only in INTERNAL/MANAGED tables
ALTER TABLE table_name DROP [IF EXISTS] PARTITION partition_spec PURGE;
External Tables have a two step process to alterr table drop partition + removing file
ALTER TABLE table_name DROP [IF EXISTS] PARTITION partition_spec;
hadoop fs -rm -r <partition file path>