copr: fix lockerr when streaming

[you06]

Signed-off-by: you06 you1474600@gmail.com

What problem does this PR solve?

Issue Number: close #31928

Problem Summary:

What is changed and how it works?

Because coprocessor request will return nil range field when meeting lock, calculateRetry is no more required, and the current usage can lead to duplicated range scan. This PR remove calculateRetry and use calculateRemain instead.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Fix a bug that streaming coprocessor scans duplicated data when meeting lock.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• XuHuaiyu
• youjiali1995

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

The full list of commands accepted by this bot can be found here.

Reviewer can indicate their review by submitting an approval review.
Reviewer can cancel approval by submitting a request changes review.

[youjiali1995]

LGTM. Seems it's not easy to write unit tests for it.

[breezewish]

The fix seems to be ok but streaming is deprecated #20759

[you06]

The fix seems to be ok but streaming is deprecated #20759

Yeah, so the priority is low. But fixing it won't be a bad thing.

[ti-chi-bot]

PR needs rebase.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.