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https://issues.apache.org/jira/browse/MRQL-93?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15406185#comment-15406185
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ASF GitHub Bot commented on MRQL-93:
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GitHub user fegaras opened a pull request:
https://github.com/apache/incubator-mrql/pull/24
[MRQL-93] Support query evaluation tracing and how-provenance
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/fegaras/incubator-mrql MRQL-93
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-mrql/pull/24.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #24
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commit ba7521e09329df01009c96ce0605725592d0f1fd
Author: Leonidas Fegaras <fega...@cse.uta.edu>
Date: 2016-08-03T16:29:58Z
[MRQL-93] Support query evaluation tracing and how-provenance
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> 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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