Prasad Mujumdar created HIVE-3764:
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Summary: Support metastore version consistency check
Key: HIVE-3764
URL: https://issues.apache.org/jira/browse/HIVE-3764
Project: Hive
Issue Type: Improvement
Components: Metastore
Reporter: Prasad Mujumdar
Assignee: Prasad Mujumdar
Today there's no version/compatibility information stored in hive metastore.
Also the datanucleus configuration property to automatically create missing
tables is enabled by default. If you happen to start an older or newer hive or
don't run the correct upgrade scripts during migration, the metastore would end
up corrupted. The autoCreate schema is not always sufficient to upgrade
metastore when migrating to newer release. It's not supported with all
databases. Besides the migration often involves altering existing table,
changing or moving data etc.
Hence it's very useful to have some consistency check to make sure that hive is
using correct metastore and for production systems the schema is not
automatically by running hive.
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