Hive now records the schema version in the metastore database and verifies that the metastore schema version is compatible with the Hive binaries that are going to access the metastore. I would also suggest you to browse through the official Hive documentation and read the good book Programming Hive. The hive metastore DB is a normal MySQL/etc database with a hive schema in it. It stores metadata for Hive tables (like their schema and location) and partitions in a relational database. 2. Schematool is a offline command line tool to manage the metastore.. It provides client access to this information by using metastore service API. Hive-Metastore. hive.metastore.schema.verification is not enabled so recording the schema version 1.1.0-cdh5.12.0 17/09/10 23:13:42 WARN metastore.ObjectStore: Failed to get database default, returning NoSuchObjectException By default, Hive uses a built-in Derby SQL server. Use the Metastore command-line schematool to upgrade or validate the metastore database schema for unmanaged clusters.. This is the link to metastore ER diagram. So, the information schema is irrelevant to hive; to get the hive table details, you have to interrogate the TBLS table, for example. This tool can be used to initialize the metastore schema for the current Hive version. If the external metastore version is Hive 2.0 or above, use the Hive Schema Tool to create the metastore tables. Instead of using the Databricks Hive metastore, you have the option to use an existing external Hive metastore instance or the AWS Glue Catalog. 17/09/10 23:13:41 WARN metastore.ObjectStore: Version information not found in metastore. 3. The reason for this issue is that the Hive Metastore cannot access the Hive database. Before Hive 0.12, we have to manually run the upgrade DDL SQL files in the metastore database. Metastore is the central repository of Apache Hive metadata. 2. What is Hive Metastore? It is implemented using tables in a relational database. Solution. The hive schema holds the hive tables though. For versions below Hive 2.0, add the metastore tables with the following configurations in your existing init script: From the Cloudera Manager Admin console, select the Hive service. The following example creates an external schema using a Hive metastore database named hive_db. You might find the original Hive paper useful. This article will go through the steps to upgrade metastore schema using Hive schema tool, taking PostgreSQL for example. All Hive implementations need a metastore service, where it stores metadata. Every Databricks deployment has a central Hive metastore accessible by all clusters to persist table metadata. The Hive Metastore destination compares information in metadata records with Hive tables, and then creates or updates the tables as needed. 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