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[SPARK-56153][SQL][TESTS][FOLLOWUP] Remove unnecessary asInstanceOf[classic.Dataset] casts in QueryTest#55339

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[SPARK-56153][SQL][TESTS][FOLLOWUP] Remove unnecessary asInstanceOf[classic.Dataset] casts in QueryTest#55339
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@zhengruifeng zhengruifeng commented Apr 14, 2026

What changes were proposed in this pull request?

Remove three unnecessary asInstanceOf[classic.Dataset[_]] casts in QueryTest.scala (assertCached and assertEmptyMissingInput methods). The api-level Dataset already declares queryExecution (with @ClassicOnly annotation, which is purely documentation), so the casts are redundant.

Why are the changes needed?

The casts are unnecessary because:

  1. The api-level Dataset already declares def queryExecution: QueryExecution — calling it directly works without casting to classic.Dataset.
  2. The same file already calls ds.queryExecution directly without a cast on line 126 (getResult method), confirming this is safe.
  3. The @ClassicOnly annotation is a runtime documentation annotation with no compile-time effect.

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Existing tests (unable to compile locally due to missing lz4-java:1.11.0 dependency in environment).

Was this patch authored or co-authored using generative AI tooling?

Co-authored-by: Claude code (Opus 4.6)

@zhengruifeng zhengruifeng changed the title [SPARK-XXXXX][SQL] Remove unnecessary asInstanceOf[classic.Dataset] casts in QueryTest [SPARK-56153][SQL][TESTS][FOLLOWUP] Remove unnecessary asInstanceOf[classic.Dataset] casts in QueryTest Apr 14, 2026
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LGTM if it works

@zhengruifeng zhengruifeng marked this pull request as ready for review April 15, 2026 00:34
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merged to master

@zhengruifeng zhengruifeng deleted the remove-unnecessary-dataset-cast branch April 15, 2026 02:12
zhengruifeng added a commit that referenced this pull request May 7, 2026
…classic.SparkSession] cast in QueryTest

### What changes were proposed in this pull request?

In `QueryTest.withQueryExecutionsCaptured`, the local alias `classicSession = spark.asInstanceOf[classic.SparkSession]` is replaced with direct uses of `spark`. The cast is not needed: `sparkContext` (`api/SparkSession.scala:72`) and `listenerManager` (`api/SparkSession.scala:144`) are both declared on the abstract `org.apache.spark.sql.SparkSession`, so they are accessible without converting to the classic implementation.

### Why are the changes needed?

Cleanup follow-up to #55339, which removed unnecessary `asInstanceOf[classic.Dataset]` casts in `QueryTest`. The same criterion applies here: when the called API is already on the abstract type, the explicit classic cast adds noise and obscures which code paths actually depend on classic-only functionality.

### Does this PR introduce _any_ user-facing change?

No. Test-only.

### How was this patch tested?

`build/sbt sql/Test/compile` succeeds.

### Was this patch authored or co-authored using generative AI tooling?

Generated-by: Claude Code (Opus 4.7)

Closes #55715 from zhengruifeng/inline-classic-cast-query-test.

Authored-by: Ruifeng Zheng <ruifengz@apache.org>
Signed-off-by: Ruifeng Zheng <ruifengz@foxmail.com>
zhengruifeng added a commit that referenced this pull request May 7, 2026
…classic.SparkSession] cast in QueryTest

### What changes were proposed in this pull request?

In `QueryTest.withQueryExecutionsCaptured`, the local alias `classicSession = spark.asInstanceOf[classic.SparkSession]` is replaced with direct uses of `spark`. The cast is not needed: `sparkContext` (`api/SparkSession.scala:72`) and `listenerManager` (`api/SparkSession.scala:144`) are both declared on the abstract `org.apache.spark.sql.SparkSession`, so they are accessible without converting to the classic implementation.

### Why are the changes needed?

Cleanup follow-up to #55339, which removed unnecessary `asInstanceOf[classic.Dataset]` casts in `QueryTest`. The same criterion applies here: when the called API is already on the abstract type, the explicit classic cast adds noise and obscures which code paths actually depend on classic-only functionality.

### Does this PR introduce _any_ user-facing change?

No. Test-only.

### How was this patch tested?

`build/sbt sql/Test/compile` succeeds.

### Was this patch authored or co-authored using generative AI tooling?

Generated-by: Claude Code (Opus 4.7)

Closes #55715 from zhengruifeng/inline-classic-cast-query-test.

Authored-by: Ruifeng Zheng <ruifengz@apache.org>
Signed-off-by: Ruifeng Zheng <ruifengz@foxmail.com>
(cherry picked from commit 1241434)
Signed-off-by: Ruifeng Zheng <ruifengz@foxmail.com>
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