Issue the ALTER TABLE DROP PARTITION statement without maintaining global indexes. Syntax. Closed; is related to. All of the answers so far are half right. As of now this is not possible in HIVE. Syntax: ... Sets the SERDE or SERDE properties in Hive tables. HIVE-9118 Support auto-purge for tables, when dropping tables/partitions. Hive Drop Database. The answer sadly is no. A2A. We know that Hive will create a partition with value “__HIVE_DEFAULT_PARTITION__” when running in dynamic partition mode and the value for the partition key is “null” value. HIVE-10934 Restore support for DROP PARTITION PURGE. Afterward, you must rebuild any global indexes (whether partitioned or not) because the index (or index partitions) has been marked UNUSABLE.The following statements provide an example of dropping partition dec98 from the sales table, then rebuilding its global nonpartitioned index. For non-Hive tables and partitions, Spark already behaves as if the PURGE option was set, so there's no need to do anything. Among several Hive DDL Commands, here I will be covering the most commonly used DDL commands.. DDL commands are used to create databases, tables, modify the structure of the table, and drop the database and tables e.t.c. Just performing an ALTER TABLE DROP PARTITION statement does remove the partition information from the metastore only. However, depending on on the partition column type, you might not be able to drop those partitions due to restrictions in the Hive code. Drops the partition of the table. In the last few articles, we have covered most of the details of Partitioning in Hive. If a property was … drop table table_name purge hive – drop multiple tables in hive. HIVE-9083 New metastore API to support to purge partition-data directly in dropPartitions(). DROP PARTITION. Before you proceed make sure you have HiveServer2 started and connected to Hive using Beeline. This is the general syntax for the drop partition syntax in Apache Hive: ALTER TABLE table_name DROP [IF EXISTS] PARTITION partition_spec PURGE; So the syntax to drop a range of partitions in a table that uses year as a partitioning column: ALTER TABLE mytable DROP [IF EXISTS] PARTITION (year>2019) PURGE; The first thing that comes to mind if if we can show multiple tables using LIKE then can we DROP multiple tables as well. After creating a partitioned table, Hive does not update metadata about corresponding directories on the file system or object store that you add or drop. partition_spec. Hive DDL Database Commands. ALTER TABLE table_identifier DROP [IF EXISTS] partition_spec [PURGE] Parameters. Resolved; relates to. Hive support for PURGE was added in 0.14 (for tables) and 1.2 (for partitions), so the code reflects that: trying to use the option with older versions of Hive … Use DROP DATABASE statement to drop … Partitioning is also one of the core strategies to improve query performance in a hive. If you need to drop all tables then the easiest way is to drop … Partitioning is one of the important topics in the Hive. You can use PURGE option to not move the data to .Trash directory, the data will be permanently removed and it can not be recovered.. DROP TABLE IF EXISTS employee PURGE; Note: By configuring Trash, you can just retain the actual data in .Trash directory but the Meta data from metastore is removed and cannot be restored. Partition to be dropped. You can remove partitions using dropPartition with partition values , table name and db info (hive.dropPartition) hiveContext.getPartitions(table) hiveContext.dropPartition(dbName, tableName, partition.getValues(), true) You need to validate the partition name and check whether it needs to be deleted or not (you need to write custom method ). Closed; is depended upon by. The partition metadata in the Hive metastore becomes stale after corresponding directories are added or deleted.