Aman Sinha created DRILL-6992: --------------------------------- Summary: Support column histogram statistics Key: DRILL-6992 URL: https://issues.apache.org/jira/browse/DRILL-6992 Project: Apache Drill Issue Type: New Feature Components: Query Planning & Optimization Affects Versions: 1.15.0 Reporter: Aman Sinha Assignee: Aman Sinha
As a follow-up to [DRILL-1328|https://issues.apache.org/jira/browse/DRILL-1328] which is adding NDV (num distinct values) support and creating the framework for statistics, we also need Histograms. These are needed for range predicates selectivity estimation as well as equality predicates when there is non-uniform distribution of data. -- This message was sent by Atlassian JIRA (v7.6.3#76005)