If you look closely, "hive.metastore.client.socket.timeout" is just underneath it. AnalysisException when dropping table on Azure-backed metastore. Another way is to setup a quick script to drop partition in batches and and then drop the table after number of partitions have reduced to a … Hive will remove all of its data and metadata from the hive meta-store. You use an external table, which is a table that Hive does not manage, to import data from a file on a file system, into Hive. There is a table for which the backing hdfs file no longer exists. A global table is available across all clusters. When you drop a table from Hive Metastore, it removes the table/column data and their metadata. Drop multiple partitions With the below alter script, we provide the exact partitions we would like to delete. Cause. In contrast to the Hive managed table, an external table keeps its data outside the Hive metastore. When you run Drop table command, Spark checks whether table exists or not before dropping the table. GitHub Gist: instantly share code, notes, and snippets. Consequently, dropping of an external table does not affect the data. 03/23/2020; 2 minutes to read; m; l; m; In this article Problem. Drop a table form the hive metastore. Hive metastore stores only the schema metadata of the external table. First we have to use the database as "use metastore" Once it chooses meta store we can check the tables present in this by using "show" tables command as shown in the screenshot; Whatever the tables that are created in Hive, the metadata corresponds to that tables are stored under TBLS in MySQL database. When you try to drop a table in an external Hive version 2.0 or 2.1 metastore that is deployed on Azure SQL Database, Azure Databricks throws the following exception: If it is an internal table then the table and data will complete delete. Azure Databricks registers global tables either to the Azure Databricks Hive metastore or to an external Hive metastore. Since the metadata is corrupted for the table Spark can’t drop the table and fails with following exception. If it is an external table then the table entry will delete it from metastore but the data is available on HDFS Level. When you will drop/delete the table form the hive database, the table entry will delete it from hive metastore. You can use the below command to drop the table. In Hive terminology, external tables are tables not managed with Hive. The hive DROP TABLE statement comes with a … A local table is not accessible from It can be a normal table or an external table; Hive treats both in the same manner, irrespective of their types. hive> ALTER TABLE sales drop if exists partition (year = 2020, quarter = 1), partition (year = 2020, quarter = 2); Here is how we dynamically pick partitions to drop. DROP TABLE command in the hive is used to drop a table inside the hive. Hive is very much capable such that it can query petabytes of records stored inside the hive table. The metadata (table schema) stored in the metastore is corrupted. Regarding the JIRA ID, it is an internal JIRA, so you do not have access to it. Their purpose is to facilitate importing of data from an external file into the metastore. $ DROP TABLE IF EXISTS employee; The external table data is stored externally, while Hive metastore only contains the metadata schema. For details about Hive support, see Apache Hive compatibility. Hive does not manage, or restrict access, to the actual external data.

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