v.23.5upgrade-notes
Setting enable_memory_bound_merging_of_aggregation_results to false during update from versions prior to 22.12
Settingenable_memory_bound_merging_of_aggregation_resultsis enabled by default. If you update from version prior to 22.12, we recommend to set this flag tofalseuntil update is finished. #50319 (Nikita Taranov).