dumpling: use I_S to get table list for TiDB and add database to WHERE

[lance6716]

What problem does this PR solve?

Issue Number: close #57902

Problem Summary:

What changed and how does it work?

by copilot

dumpling/export/dump.go: The logic for preparing the table list to dump has been updated to optimize the performance of reading INFORMATION_SCHEMA.TABLES for TiDB. It includes conditional checks and refactored code.
dumpling/export/sql.go: The function ListAllDatabasesTables has been refactored for improved readability and efficiency, particularly when querying INFORMATION_SCHEMA.TABLES. The function CheckIfSeqExists has been renamed to checkIfSeqExists.
dumpling/export/sql_test.go: Corresponding test cases have been updated to reflect the renaming of the function CheckIfSeqExists to checkIfSeqExists.

Check List

Tests

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

  • I checked and no code files have been changed.

/dumpling-patch -u root -P 4000 -h xxx --filetype csv -t 16 -r 200000 -F 256MiB --database sb10wnormal1 --loglevel debug
[2024/12/02 10:50:39.356 +00:00] [INFO] [versions.go:54] ["Welcome to dumpling"]...
...
[2024/12/02 10:50:41.123 +00:00] [INFO] [main.go:82] ["dump data successfully, dumpling will exit now"]

root@benchtoolset2-0:/# ll export-2024-12-02T10\:50\:39Z/
total 3832
drwxrwxrwx 2 root root    4096 Dec  2 10:50 ./
drwxr-xr-x 1 root root    4096 Dec  2 10:50 ../
-rw-r--r-- 1 root root     150 Dec  2 10:50 metadata
-rw-r--r-- 1 root root     140 Dec  2 10:50 sb10wnormal1-schema-create.sql
-rw-r--r-- 1 root root     391 Dec  2 10:50 sb10wnormal1.sbtest1-schema.sql
-rw-r--r-- 1 root root 1947727 Dec  2 10:50 sb10wnormal1.sbtest1.0000000010000.csv
-rw-r--r-- 1 root root     391 Dec  2 10:50 sb10wnormal1.sbtest2-schema.sql
-rw-r--r-- 1 root root 1947783 Dec  2 10:50 sb10wnormal1.sbtest2.0000000010000.csv

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

[tiprow]

Hi @lance6716. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

I understand the commands that are listed here.

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-sigs/prow repository.

[codecov]

Codecov Report

Attention: Patch coverage is 48.78049% with 21 lines in your changes missing coverage. Please review.

Project coverage is 73.6173%. Comparing base (6434ca4) to head (dcd2167).
Report is 16 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #57894        +/-   ##
================================================
+ Coverage   72.8734%   73.6173%   +0.7438%     
================================================
  Files          1677       1687        +10     
  Lines        464634     468565      +3931     
================================================
+ Hits         338595     344945      +6350     
+ Misses       105152     102838      -2314     
+ Partials      20887      20782       -105     

Flag	Coverage Δ
integration	43.4353% <ø> (?)
unit	72.5536% <48.7804%> (+0.2786%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.6910% <48.7804%> (-0.0764%)	⬇️
parser	∅ <ø> (∅)
br	45.4752% <ø> (-0.2416%)	⬇️

[Benjamin2037]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, tangenta

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

The pull request process is described here

Needs approval from an approver in each of these files:

• dumpling/OWNERS [Benjamin2037,tangenta]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-02 12:24:00.556097739 +0000 UTC m=+1071228.175752254: ☑️ agreed by tangenta.
• 2024-12-03 06:17:35.278592259 +0000 UTC m=+1135642.898246775: ☑️ agreed by Benjamin2037.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.5: #57936.