Aman Sinha created DRILL-4891: --------------------------------- Summary: Use field width when available for computing estimated memory costing Key: DRILL-4891 URL: https://issues.apache.org/jira/browse/DRILL-4891 Project: Apache Drill Issue Type: Improvement Components: Query Planning & Optimization Affects Versions: 1.8.0 Reporter: Aman Sinha
Drill currently uses an average field width (in addition to other parameters) for computing estimated memory cost for hash and sort based operations. The assumption is that the field is of ANY type. However, when a view with appropriate CAST is used, the relevant data type is available and we should leverage the correct field width for the costing calculations. -- This message was sent by Atlassian JIRA (v6.3.4#6332)