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https://issues.apache.org/jira/browse/SPARK-42791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-42791:
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Assignee: Apache Spark
> Create golden file test framework for analysis
> ----------------------------------------------
>
> Key: SPARK-42791
> URL: https://issues.apache.org/jira/browse/SPARK-42791
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: Daniel
> Assignee: Apache Spark
> Priority: Major
>
> Here we track the work to add new golden file test support for the Spark
> analyzer. Each golden file can contain a list of SQL queries followed by the
> string representations of their analyzed logical plans.
>
> This can be similar to Spark's existing `SQLQueryTestSuite` [1], but stopping
> after analysis and listing analyzed plans as the results instead of fully
> executing queries end-to-end. As another example, ZetaSQL has analyzer-based
> golden file testing like this as well [2].
>
> This way, any changes to analysis will show up as test diffs, which are easy
> to spot in review and also easy to update automatically. This could help the
> community together maintain the qualify of Apache Spark's query analysis.
>
> [1]
> [https://github.com/apache/spark/blob/master/sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestSuite.scala]
>
> [2]
> [https://github.com/google/zetasql/blob/master/zetasql/analyzer/testdata/limit.test].
>
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