[IMPALA-9663] Insert overwrites should not throw NPE.

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 4.0.0
• Fix Version/s: Impala 4.0.0
• Epic Color: ghx-label-12
• Assignee: Anurag Mantripragada
• Reporter: Anurag Mantripragada
• Created: 16/Apr/20 19:41
• Updated: 17/Apr/20 23:09
• Resolved: 17/Apr/20 23:09

Description

Insert overwrite can throw NPE when there are no insert events, there is no null check for this.

https://github.com/apache/impala/blob/dc410a2cf47bcf06a0f4563d05a9d0a339af5fb2/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java#L4517