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https://issues.apache.org/jira/browse/HIVE-26814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhay reassigned HIVE-26814:
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> Atomic Schema Upgrade for HMS
> -----------------------------
>
> Key: HIVE-26814
> URL: https://issues.apache.org/jira/browse/HIVE-26814
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Reporter: Abhay
> Assignee: Abhay
> Priority: Major
>
> Currently, as schematool applies schema changes during an upgrade, each
> change is autocommitted. So if it fails after applying a few changes from an
> upgrade file, those changes remain in the schema. So re-running the
> schematool fails at the first line because that change already exists.
> Instead, we should create a transactional boundary between each upgrade file,
> aka commit only after all the changes in an upgrade file are successful.
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