store/copr: update copr-cache admission for paging and initial copr task's paging size

[tiancaiamao]

What problem does this PR solve?

Issue Number: close #37768 #37974

Problem Summary:

What is changed and how it works?

I figure out that for Q17, the root cause of the issue is copr-cache #37768 (comment)

When paging is disabled, the copr cache admission check would check the copr request data size < 10M
When paging is enable, this check become useless because the data is much smaller.

I add a pagingTaskIdx and check if pagingTaskIdx is large, don't cache the data.

Check List

Tests

• Unit test
• Integration test

I'll run the TPCH bench bot to verify the change work.

• 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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• XuHuaiyu
• xhebox

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.

[tiancaiamao]

In the new profile, the copr-cache part is gone.

[XuHuaiyu]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 2c5053b

[ti-srebot]

cherry pick to release-6.3 in PR #38077

[sre-bot]

TiDB MergeCI notify

🔴 Bad News! [2] CI still failing after this pr merged.
These failed integration tests don't seem to be introduced by the current PR.

CI Name	Result	Duration	Compare with Parent commit
idc-jenkins-ci-tidb/integration-ddl-test	🔴 failed 1, success 5, total 6	25 min	Existing failure
idc-jenkins-ci-tidb/tics-test	🔴 failed 1, success 0, total 1	5 min 23 sec	Existing failure
idc-jenkins-ci/integration-cdc-test	🟢 all 37 tests passed	31 min	Existing passed
idc-jenkins-ci-tidb/integration-common-test	🟢 all 17 tests passed	18 min	Existing passed
idc-jenkins-ci-tidb/common-test	🟢 all 11 tests passed	10 min	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-2	🟢 all 28 tests passed	5 min 49 sec	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-1	🟢 all 26 tests passed	5 min 5 sec	Existing passed
idc-jenkins-ci-tidb/mybatis-test	🟢 all 1 tests passed	3 min 6 sec	Existing passed
idc-jenkins-ci-tidb/integration-compatibility-test	🟢 all 1 tests passed	2 min 44 sec	Existing passed
idc-jenkins-ci-tidb/plugin-test	🟢 build success, plugin test success	4min	Existing passed