THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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By default the configuration property hive.metastore.schema.verification is false and metastore to implicitly write the schema version if it's not matching. To enable the strict schema verification, you need to set this property to true in hive-site.xml.
See Hive Metastore Administration for general information about the metastore.
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$ schematool -help usage: schemaTool -dbType <databaseType> Metastore database type -driver <driver> Driver name for connection -dryRun List SQL scripts (no execute) -help Print this message -info Show config and schema details -initSchema Schema initialization -initSchemaTo <initTo> Schema initialization to a version -metaDbType <metaDatabaseType> Used only if upgrading the system catalog for hive -passWord <password> Override config file password -upgradeSchema Schema upgrade -upgradeSchemaFrom <upgradeFrom> Schema upgrade from a version -url <url> Connection url to the database -userName <user> Override config file user name -verbose Only print SQL statements (Additional catalog related options added in Hive 3.0.0 (HIVE-19135] release are below. -createCatalog <catalogname><catalog> Create catalog with given name -catalogLocation <location> Location of new catalog, required when adding a catalog -catalogDescription <description> Description of new catalog -ifNotExists If passed then it is not an error to create an existing catalog -moveDatabase <database> Move a database between catalogs. All tables under it would still be under it as part of new catalog. Argument is the database name. Requires --fromCatalog and --toCatalog parameters as well -moveTable <table> Move a table to a different database. Argument is the table name. Requires --fromCatalog, --toCatalog, --fromDatabase, and --toDatabase -toCatalog <catalog> Catalog a moving database or table is going to. This is required if you are moving a database or table. -fromCatalog <catalog> Catalog a moving database or table is coming from. This is required if you are moving a database or table. -toDatabase <database> Database a moving table is going to. This is required if you are moving a table. -fromDatabase <database> Database a moving table is coming from. This is required if you are moving a table. |
The dbType is required and can be one of:
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Upgrade dry run can be used to list the required scripts for the given upgrade.
No Format $ build/dist/bin/schematool -dbType derby -upgradeSchemaFrom 0.7.0 -dryRun Metastore Connection Driver : org.apache.derby.jdbc.EmbeddedDriver Metastore connection User: APP Starting upgrade metastore schema from version 0.7.0 to 0.13.0 Upgrade script upgrade-0.7.0-to-0.8.0.derby.sql Upgrade script upgrade-0.8.0-to-0.9.0.derby.sql Upgrade script upgrade-0.9.0-to-0.10.0.derby.sql Upgrade script upgrade-0.10.0-to-0.11.0.derby.sql Upgrade script upgrade-0.11.0-to-0.12.0.derby.sql Upgrade script upgrade-0.12.0-to-0.13.0.derby.sql schemaTool completed
This is useful if you just want to find out all the required scripts for the schema upgrade.
Moving a database and tables under it from default Hive catalog to a custom spark catalog
No Format build/dist/bin/schematool -moveDatabase db1 -fromCatalog hive -toCatalog sparkMoving a table from Hive catalog to Spark Catalog
No Format # Create the desired target database in spark catalog if it doesn't already exist. beeline ... -e "create database if not exists newdb"; schematool -moveDatabase newdb -fromCatalog hive -toCatalog spark # Now move the table to target db under the spark catalog. schematool -moveTable table1 -fromCatalog hive -toCatalog spark -fromDatabase db1 -toDatabase newdb