How to confirm Dynamic Partition Pruning works in Impala

This article explains how to confirm Impala’s new Dynamic Partition Pruning feature is effective in CDH5.7.x. Dynamic Partition Pruning is a new feature introduced from CDH5.7.x / Impala 2.5, where information about the partition is collected during run time and impala prunes unnecessary partitions in the ways that were impractical …