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Validates existing schema against code. Turn this on if you want to verify existing schema.

datanucleus.schema.validateTables

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Validates existing schema against code. Turn this on if you want to verify existing schema.

datanucleus.validateColumns

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Creates necessary schema on a startup if one does not exist. Reset this to false, after creating it once.

datanucleus.schema.autoCreateAll is disabled if hive.metastore.schema.verification is true.

datanucleus.autoStartMechanismMode

• Default Value: checked
• Added In: Hive 0.7.0

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Enforce metastore schema version consistency.
True: Verify that version information stored in metastore matches with one from Hive jars. Also disable automatic schema migration attempt (see datanucleus.autoCreateSchema and datanucleus.schema.autoCreateAll). Users are required to manually migrate schema after Hive upgrade which ensures proper metastore schema migration.
False: Warn if the version information stored in metastore doesn't match with one from Hive jars.

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For WebHCat configuration, see Configuration Variables in the WebHCat manual.