Vladimir Sitnikov created CALCITE-4558: ------------------------------------------
Summary: Sort CPU cost should be aligned with filter and project: sort should incur row copy cost Key: CALCITE-4558 URL: https://issues.apache.org/jira/browse/CALCITE-4558 Project: Calcite Issue Type: Improvement Components: core Affects Versions: 1.26.0 Reporter: Vladimir Sitnikov Typical Java implementations of the sort do not copy rows (they copy references only), so it makes little sense to have "row width" as the key driver of the sort costing. The CPU cost for filter does not include "row copy" cost. Even though the implementations might be different, in-core costs should be aligned. For instance, the current, EnumerableLimitSort and EnumerableSort have bytesPerRow multiplier, however, the implementation does not copy rows field-by-field . -- This message was sent by Atlassian Jira (v8.3.4#803005)