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Posted to dev@mrql.apache.org by "Leonidas Fegaras (JIRA)" <ji...@apache.org> on 2016/07/16 14:47:20 UTC

[jira] [Created] (MRQL-93) Support query evaluation tracing and how-provenance

Leonidas Fegaras created MRQL-93:
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             Summary: Support query evaluation tracing  and how-provenance
                 Key: MRQL-93
                 URL: https://issues.apache.org/jira/browse/MRQL-93
             Project: MRQL
          Issue Type: New Feature
          Components: Evaluation, Query Translation
    Affects Versions: 0.9.8
            Reporter: Leonidas Fegaras
            Assignee: Leonidas Fegaras
            Priority: Critical


With this new feature, one can trace any piece of a query result to the input data that contributed to the result as well as the detailed operations used to derive the result. This is called why- and how-provenance in data analysis. A traced query will be lifted so that its output will contain the provenance information. There will be a GUI (based on JTree) to lazily navigate through the provenance data.



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