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[AURON #2449] Add fallback coverage for unsupported Paimon scan data type - #2450

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[AURON #2449] Add fallback coverage for unsupported Paimon scan data type#2450
weimingdiit wants to merge 2 commits into
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weimingdiit:test/paimon-unsupported-type-fallback

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Which issue does this PR close?

Closes #2449

Rationale for this change

Paimon native scan currently falls back when the read schema contains unsupported
data types, but this behavior was not covered by the integration tests.

Adding this regression test ensures unsupported decimal types continue to use the
Spark fallback path and do not enter native Paimon execution accidentally.

What changes are included in this PR?

Adds a Paimon integration test for an unsupported decimal(38,10) column.

The test:

  • Writes a row using the unsupported decimal type.
  • Verifies that Spark returns the expected result.
  • Verifies that the executed plan does not contain NativePaimonV2TableScan.

No execution logic or user-facing behavior is changed.

Are there any user-facing changes?

No user-facing changes.

How was this patch tested?

UT.

… data types

Signed-off-by: weimingdiit <weimingdiit@gmail.com>
Signed-off-by: weimingdiit <weimingdiit@gmail.com>
@weimingdiit
weimingdiit marked this pull request as ready for review August 6, 2026 08:03
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Add fallback coverage for unsupported Paimon scan data type

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