[muthukkumaranb]

Related Issues

• fixes TransformersExtractiveReader.run() ignores a zero stride override #4176

Proposed Changes:

TransformersExtractiveReader.run() resolved the stride override with stride or self.stride, so an explicit stride=0 (no overlap between split sequences) was silently replaced by the init value. It now falls back only when stride is None.

This follows up on #4159, which fixed the same pattern for score_threshold and overlap_threshold in the same method and noted that stride=0 was left out to keep that change small.

How did you test it?

• Added test_run_respects_zero_stride_override: sets the init stride to 64, calls run(..., stride=0) and asserts _preprocess receives stride=0. It fails on main (assert 64 == 0) and passes with the fix.
• pytest -m "not integration" tests/test_extractive_reader.py: 39 passed.
• ruff check and ruff format --check pass.

Notes for the reviewer

One-line change. The remaining or fallbacks in run() (top_k, max_seq_length, max_batch_size, answers_per_seq) are left unchanged since 0 is not a meaningful value for them.

Checklist

• I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added unit tests and updated the docstrings
• I've used one of the conventional commit types for my PR title: fix:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test:.

[github-actions]

Heads-up for maintainers

This PR is from a fork and touches integrations whose integration tests require API keys.
Those tests are skipped in CI because fork PRs don't have access to repo secrets for security reasons.

Affected integrations:

• transformers

Please run the integration tests locally (hatch run test:integration inside each folder) before approving.

[github-actions]

Coverage report (transformers)

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
integrations/transformers/src/haystack_integrations/components/readers/transformers
extractive_reader.py
Project Total

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