Leonidas Fegaras created MRQL-96:
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Summary: Develop a MRQL debugger
Key: MRQL-96
URL: https://issues.apache.org/jira/browse/MRQL-96
Project: MRQL
Issue Type: New Feature
Components: Evaluation, Query Translation
Affects Versions: 0.9.8
Reporter: Leonidas Fegaras
Assignee: Leonidas Fegaras
Priority: Minor
This patch introduces a novel query debugger based on the how-provenance
information provided by the Provenance component addressed in MRQL-93. The
debugger is a GUI based on JTree that allows to navigate through the provenance
data associated with the query results in both forward and backward directions.
The command to debug an MRQL query e is {{debug e}} for coarse-grain debugging
or {{debug all e}} for fine-grain debugging. The GUI allows you to filter out
the output or the input data to reduce the amount of information on screen.
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