Paul Rogers created IMPALA-7968:
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Summary: Convert Analyzer AST to JSON for test verification
Key: IMPALA-7968
URL: https://issues.apache.org/jira/browse/IMPALA-7968
Project: IMPALA
Issue Type: Improvement
Components: Frontend
Affects Versions: Impala 3.1.0
Reporter: Paul Rogers
Assignee: Paul Rogers
The FE code provides the {{PlannerTest}} which parses a SQL statement, analyzes
it, plans the query, and writes selected portions of the plan to a file to be
compared with a "golden" copy. Very helpful.
At present, the Analyzer itself has no such test framework. This ticket asks to
provide one. Key pieces:
* JSON serializer to write the AST to JSON in a compact format for testing.
* Potentially a YAML form of the above if the JSON grows too bulky
* Serialization code in the AST objects to produce the JSON
* Additions to the PlannerTest framework to add an AST section and an AST test
framework
* The actual AST tests
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