[IMPALA-3548] Prune runtime filters based on RUNTIME_FILTER_MODE in the frontend

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: impala 2.5.1
• Fix Version/s: Impala 2.11.0
• Component/s: Frontend
• Labels: runtime-filters usability
• Assignee: Attila Jeges
• Reporter: Dimitris Tsirogiannis
• Created: 16/May/16 23:48
• Updated: 29/Oct/17 08:08
• Resolved: 29/Oct/17 08:08

Description

Currently, the FE generates a number of runtime filters and assigns them to plan nodes without taking the value of RUNTIME_FILTER_MODE into account. In the backend, the filters are removed from the exec nodes based on the target node types (local or remote) and the value of the RUNTIME_FILTER_MODE option. This may cause some confusion to users because they may see runtime filters in the output of explain that aren't applied when the query is executed. This operation should be performed in the FE.