[HIVE-12261] schematool version info exit status should depend on compatibility, not equality

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0, 2.0.0
• Fix Version/s: 1.3.0, 2.0.0
• Component/s: Metastore
• Labels: pull-request-available
• Assignee: Thejas Nair
• Reporter: Thejas Nair
• Created: 25/Oct/15 05:48
• Updated: 04/Jun/20 21:52
• Resolved: 26/Oct/15 06:51

Description

Newer versions of metastore schema are compatible with older versions of hive, as only new tables or columns are added with additional information.

HIVE-11613 added a check in hive schematool -info command to see if schema version is equal.

However, the state where db schema version is ahead of hive software version is often seen when a 'rolling upgrade' or 'rolling downgrade' is happening. This is a state where hive is functional and returning non zero status for it is misleading.

Issue Links

• is related to: HIVE-11613 schematool should return non zero exit status for info command, if state is inconsistent
• relates to: HIVE-14080 hive.metastore.schema.verification should check for schema compatiblity
• links to: GitHub Pull Request #51