Matthias Boehm created SYSTEMML-1791: ----------------------------------------
Summary: Performance features frame blocks Key: SYSTEMML-1791 URL: https://issues.apache.org/jira/browse/SYSTEMML-1791 Project: SystemML Issue Type: Task Reporter: Matthias Boehm Recent experiments have shown that there are unnecessary overheads in various frame block operations. This task is an umbrella for all related performance improvements. In detail, this includes: * Shallow copy for column indexing * Bidirectional reuse of recode maps in meta data frames * Avoid unnecessary long-string-double parsing on transformapply -- This message was sent by Atlassian JIRA (v6.4.14#64029)