Sandbox::https://github.com/microsoft/SynapseML/pull/2464

Wendong Li (levscaut) · 2026-01-14T19:26:20Z

Related Issues/PRs

N/A

What changes are proposed in this pull request?

This PR adds file validation parameters to OpenAIPrompt and improves error handling for file preparation:

Graceful error handling for file preparation: Instead of failing the entire process when a file cannot be read (e.g., file not found), errors are now captured in errorCol with null in outputCol, allowing other rows to process normally.
File size limit (setFileSizeLimitMB): New parameter to restrict maximum file size in megabytes. Files exceeding this limit produce an error in errorCol.
SimpleHTTPTransformer enhancement: Modified to preserve existing errorCol values using coalesce, enabling upstream error propagation.

How is this patch tested?

I have written tests (not required for typo or doc fix) and confirmed the proposed feature/bug-fix/change works.

New test cases added:

file preparation error stores error in errorCol instead of failing
file size limit produces error when exceeded

Does this PR change any dependencies?

No. You can skip this section.

github-actions · 2026-01-14T19:26:44Z

Hey Wendong Li (@levscaut) 👋!
Thank you so much for contributing to our repository 🙌.
Someone from SynapseML Team will be reviewing this pull request soon.

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Wendong Li (levscaut) · 2026-01-14T19:29:06Z

/azp run

azure-pipelines · 2026-01-14T19:29:19Z

Azure Pipelines successfully started running 1 pipeline(s).

Copilot

Pull request overview

This PR enhances file validation in OpenAIPrompt by adding configurable size and extension limits with graceful error handling for file preparation failures.

Changes:

Added file size limit parameter (fileSizeLimitMB) to restrict maximum file sizes
Added valid file extensions parameter (validFileExtensions) to restrict allowed file types
Modified error handling to capture file preparation errors in errorCol instead of failing the entire process
Enhanced SimpleHTTPTransformer to preserve upstream errors using coalesce

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
cognitive/src/main/scala/com/microsoft/azure/synapse/ml/services/openai/OpenAIPrompt.scala	Added file validation parameters and improved error handling for file operations
cognitive/src/test/scala/com/microsoft/azure/synapse/ml/services/openai/OpenAIPromptSuite.scala	Added comprehensive tests for new validation features and error handling
core/src/main/scala/com/microsoft/azure/synapse/ml/io/http/SimpleHTTPTransformer.scala	Modified to preserve existing errors from upstream transformations

Comments suppressed due to low confidence (1)

cognitive/src/main/scala/com/microsoft/azure/synapse/ml/services/openai/OpenAIPrompt.scala:255

The localParamNames sequence is missing the newly added parameters fileSizeLimitMB and validFileExtensions. These should be included if they are meant to be local parameters that are not passed to the underlying services.

  private val localParamNames = Seq(
    "promptTemplate", "outputCol", "postProcessing", "postProcessingOptions", "dropPrompt", "dropMessages",
    "systemPrompt", "apiType", "usageCol", "responseIdCol")

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Wendong Li (levscaut) · 2026-01-14T19:36:25Z

/azp run

azure-pipelines · 2026-01-14T19:36:37Z

Azure Pipelines successfully started running 1 pipeline(s).

Codecov Comments Bot (codecov-commenter) · 2026-01-14T19:57:09Z

Codecov Report

❌ Patch coverage is 91.11111% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.44%. Comparing base (1405a37) to head (fb8371c).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...zure/synapse/ml/services/openai/OpenAIPrompt.scala	89.47%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2464      +/-   ##
==========================================
+ Coverage   84.42%   84.44%   +0.01%     
==========================================
  Files         335      335              
  Lines       17750    17782      +32     
  Branches     1622     1579      -43     
==========================================
+ Hits        14986    15016      +30     
- Misses       2764     2766       +2

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Wendong Li (levscaut) · 2026-01-14T20:05:45Z

/azp run

azure-pipelines · 2026-01-14T20:05:58Z

Azure Pipelines successfully started running 1 pipeline(s).

Wendong Li (levscaut) · 2026-01-14T20:53:19Z

/azp run

azure-pipelines · 2026-01-14T20:53:31Z

Azure Pipelines successfully started running 1 pipeline(s).

Wendong Li (levscaut) · 2026-01-14T23:35:14Z

/azp run

azure-pipelines · 2026-01-14T23:35:26Z

Azure Pipelines successfully started running 1 pipeline(s).

Wendong Li (levscaut) · 2026-01-15T20:32:48Z

/azp run

azure-pipelines · 2026-01-15T20:33:00Z

Azure Pipelines successfully started running 1 pipeline(s).

Wendong Li (levscaut) · 2026-01-15T20:45:55Z

/azp run

azure-pipelines · 2026-01-15T20:46:06Z

Azure Pipelines successfully started running 1 pipeline(s).

Wendong Li (levscaut) · 2026-01-16T19:12:48Z

/azp run

azure-pipelines · 2026-01-16T19:13:00Z

Azure Pipelines successfully started running 1 pipeline(s).

Wendong Li (levscaut) · 2026-01-16T20:16:40Z

/azp run

azure-pipelines · 2026-01-16T20:16:53Z

Azure Pipelines successfully started running 1 pipeline(s).

Wendong Li (levscaut) · 2026-01-16T21:02:33Z

/azp run

azure-pipelines · 2026-01-16T21:02:43Z

Azure Pipelines successfully started running 1 pipeline(s).

Rana Singh (ranadeepsingh)

LGTM, thanks for looking at the feedback!

Wendong Li and others added 7 commits January 12, 2026 21:48

null value passthrough

2a73c6f

real null

8d14f1a

Merge branch 'master' into master

760ae7e

fix style

c5ce0d8

Merge branch 'master' of https://github.com/levscaut/SynapseML

eb9cd27

wrap file prepare error in errorCol

5f23585

file limit

933e1fb

Wendong Li (levscaut) requested review from Copilot and Rana Singh (ranadeepsingh) January 14, 2026 19:26

Copilot started reviewing on behalf of Wendong Li (levscaut) January 14, 2026 19:27

View session

Merge branch 'master' into file_limit

f8670b8

Wendong Li (levscaut) requested a review from Brendan Walsh (BrendanWalsh) January 14, 2026 19:28

Copilot AI reviewed Jan 14, 2026

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Apply suggestions from code review

845f4c9

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

copilot what are you doing

1fa0a16

funny test error

0b6288b

remove validFileExtensions

a517f30

Wendong Li (levscaut) changed the title ~~chore: Add argument to limit file sizes and types~~ chore: Add argument to limit file size Jan 14, 2026

Wendong Li (levscaut) changed the title ~~chore: Add argument to limit file size~~ chore: Add argument to limit file size, put file error to errorCol Jan 14, 2026

Rana Singh (ranadeepsingh) requested changes Jan 15, 2026

View reviewed changes

address comments

8f471a9

Wendong Li (levscaut) requested a review from Rana Singh (ranadeepsingh) January 15, 2026 20:43

Wendong Li (levscaut) added 2 commits January 15, 2026 20:44

Merge branch 'master' of https://github.com/levscaut/SynapseML

15408e8

Merge branch 'master' into file_limit

f897c48

Wendong Li (levscaut) enabled auto-merge (squash) January 15, 2026 22:13

Wendong Li (levscaut) requested a review from smamindl January 16, 2026 18:18

simplify

a3deea9

smamindl reviewed Jan 16, 2026

View reviewed changes

Comment thread cognitive/src/main/scala/com/microsoft/azure/synapse/ml/services/openai/OpenAIPrompt.scala Resolved

restore mechanism for Bytes

fb8371c

Brendan Walsh (BrendanWalsh) approved these changes Jan 16, 2026

View reviewed changes

Rana Singh (ranadeepsingh) approved these changes Jan 16, 2026

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Wendong Li (levscaut) merged commit 7a3b27c into microsoft:master Jan 16, 2026
68 of 69 checks passed

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