Matthias Boehm created SYSTEMML-1791:
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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
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