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Andy Grove resolved ARROW-9679. ------------------------------- Fix Version/s: 2.0.0 Resolution: Fixed Issue resolved by pull request 7936 [https://github.com/apache/arrow/pull/7936] > [Rust] [DataFusion] HashAggregate walks map many times building final batch > --------------------------------------------------------------------------- > > Key: ARROW-9679 > URL: https://issues.apache.org/jira/browse/ARROW-9679 > Project: Apache Arrow > Issue Type: Improvement > Components: Rust, Rust - DataFusion > Reporter: Andy Grove > Assignee: Andy Grove > Priority: Major > Labels: pull-request-available > Fix For: 2.0.0 > > Time Spent: 2h > Remaining Estimate: 0h > > The current HashAggregate implementation iterates over the final hash map > once for each grouping expression and once for each aggregate expression. > This is inefficient and possibly dangerous depending on the ordering > gaurantees made by the hash map implementation. -- This message was sent by Atlassian Jira (v8.3.4#803005)