*: caller can use a fixed TS for fast reorg (#52993)

[ti-chi-bot]

This is an automated cherry-pick of #52993

What problem does this PR solve?

Issue Number: ref #49233 close #46986

Problem Summary:

What changed and how does it work?

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.

GOCACHE=/tmp/failpoint-cache go build -o bin/tidb-server-failpoint -toolexec failpoint-toolexec ./cmd/tidb-server

tiup playground nightly --tiflash 0 --without-monitor --db 0

rm /tmp/tidb-{0,1}.log

GO_FAILPOINTS="github.com/pingcap/tidb/pkg/ddl/ingest/resignAfterFlush=return();github.com/pingcap/tidb/pkg/ddl/ingest/checkpointLoopExit=return();github.com/pingcap/tidb/pkg/ddl/ingest/forceSyncFlagForTest=return();github.com/pingcap/tidb/pkg/ddl/ownerResignAfterDispatchLoopCheck=return()" ./bin/tidb-server-failpoint -P 4000 --store=tikv --host=127.0.0.1 --status=10080 --path=127.0.0.1:2379 --log-file=/tmp/tidb-0.log

mysql --comments --host 127.0.0.1 --port 4000 -u root -e "set @@global.tidb_enable_dist_task = 0;set @@global.tidb_ddl_reorg_worker_cnt = 1;create table test.t(c int primary key, c2 int);split table test.t between (0) and (10000) regions 10;insert into test.t values (1,1), (3000, 3000), (6000, 6000);"

./bin/tidb-server-failpoint -P 4001 --store=tikv --host=127.0.0.1 --status=10081 --path=127.0.0.1:2379 --log-file=/tmp/tidb-1.log

mysql --comments --host 127.0.0.1 --port 4001 -u root -e "alter table test.t add unique index idx(c2);"

before

after

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]

[LGTM Timeline notifier]

Timeline:

• 2024-05-11 02:25:44.362829484 +0000 UTC m=+1274498.119965057: ☑️ agreed by lance6716.
• 2024-05-11 02:27:16.172315212 +0000 UTC m=+1274589.929450786: ☑️ agreed by D3Hunter.

[Benjamin2037]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, D3Hunter, lance6716

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Needs approval from an approver in each of these files:

• OWNERS [Benjamin2037,D3Hunter,lance6716]
• pkg/ddl/OWNERS [Benjamin2037]
• pkg/disttask/OWNERS [Benjamin2037,D3Hunter,lance6716]
• pkg/lightning/OWNERS [Benjamin2037,D3Hunter,lance6716]

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[codecov]

Codecov Report

Attention: Patch coverage is 34.81013% with 103 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.1@fa82fff). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.1     #53188   +/-   ##
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  Coverage               ?   71.1889%           
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  Files                  ?       1463           
  Lines                  ?     421186           
  Branches               ?          0           
================================================
  Hits                   ?     299838           
  Misses                 ?     100899           
  Partials               ?      20449           

Flag	Coverage Δ
unit	71.1889% <34.8101%> (?)

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Components	Coverage Δ
dumpling	53.9957% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	40.9772% <0.0000%> (?)