[IMPALA-11540] Add warning logs for slow ALTER_TABLE event processing

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 4.2.0
• Component/s: Catalog
• Epic Link: event-processor-supportability
• Epic Color: ghx-label-2
• Assignee: Quanlong Huang
• Reporter: Quanlong Huang
• Created: 29/Aug/22 13:35
• Updated: 07/Mar/24 19:46
• Resolved: 09/Sep/22 05:26

Description

ALTER_TABLE event could trigger full refresh on the table, which is expansive and can lead to event-processor lagging behind. We need logs to show the difference between the before and after hmsTables so we can further distinguish the cases that actully don't need a full table refresh. E.g. altering the owner don't need to reload the file metadata.