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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SYSTEMML-1791) Performance features frame blocks
Date Thu, 20 Jul 2017 05:44:02 GMT
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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