[HIVE-18941] HMS non-transactional listener may be called in transactional context

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.2, 3.0.0
• Component/s: Metastore
• Assignee: Unassigned
• Reporter: Alex Kolbasov
• Created: 13/Mar/18 03:11
• Updated: 14/Mar/18 17:49

Description

When HMS code calls listeners it assumes that they are not called as part of the transaction. This isn't quite true because of the nested transaction - it is quite possible that these listeners are called as part of the bigger nested transaction. This causes several potential issues:

1) It changes the assumptions about the context in which these listeners run
2) It creates possibilities for deadlocks
3) Some of these listeners may do relative long operations which may delay transaction commits.

spena FYI.