[FLINK-20485] Map views are deserialized multiple times

• Type: Sub-task
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.12.0
• Fix Version/s: 1.12.1, 1.13.0
• Component/s: Table SQL / Runtime
• Labels: pull-request-available
• Assignee: Timo Walther
• Reporter: Timo Walther
• Created: 04/Dec/20 08:58
• Updated: 08/Dec/20 08:07
• Resolved: 08/Dec/20 08:07

Description

The rework of aggregate functions in FLINK-18809 and FLINK-15803 caused a performance regression due to map views being deserialized multiple times. A solution is to wrap the logic back into a RAW type to have lazy binary format semantics.

Issue Links

• links to: GitHub Pull Request #14309