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Posted to dev@calcite.apache.org by "Stamatis Zampetakis (JIRA)" <ji...@apache.org> on 2019/03/08 17:51:00 UTC

[jira] [Created] (CALCITE-2902) Improve performance of AbstractRelNode#computeDigest

Stamatis Zampetakis created CALCITE-2902:
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             Summary: Improve performance of AbstractRelNode#computeDigest
                 Key: CALCITE-2902
                 URL: https://issues.apache.org/jira/browse/CALCITE-2902
             Project: Calcite
          Issue Type: Improvement
    Affects Versions: 1.18.0
            Reporter: Stamatis Zampetakis
            Assignee: Stamatis Zampetakis
             Fix For: 1.19.0


Compute digest is a method which is called very often in multiple places. More frequently we end up here by calls through the VolcanoPlanner when we need to register a relational expression which is another very common operation. The profiler shows that we are spending quite some time in this method.  



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