Naveen Gangam created HIVE-21337:
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Summary: HMS Metadata migration from Postgres/Derby to other DBs
fail
Key: HIVE-21337
URL: https://issues.apache.org/jira/browse/HIVE-21337
Project: Hive
Issue Type: Improvement
Components: Metastore
Affects Versions: 3.0.0
Reporter: Naveen Gangam
Assignee: Naveen Gangam
Customer recently was migrating from Postgres to Oracle for HMS metastore.
During import of the [exported] data from HMS metastore from postgres, failures
are seen as the COLUMNS_V2.COMMENT is 4000 bytes long whereas oracle and other
schemas define it to be 256 bytes.
This inconsistency in the schema makes the migration cumbersome and manual.
This jira makes this column consistent in length across all databases.
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