infoschema_v2: fix rename table

[GMHDBJD]

What problem does this PR solve?

Issue Number: ref #50959

Problem Summary:

What changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

diff --git a/pkg/sessionctx/variable/tidb_vars.go b/pkg/sessionctx/variable/tidb_vars.go
index d5e9b34324..73e6f48387 100644
--- a/pkg/sessionctx/variable/tidb_vars.go
+++ b/pkg/sessionctx/variable/tidb_vars.go
@@ -1483,7 +1483,7 @@ const (
        DefTiDBSchemaVersionCacheLimit                    = 16
        DefTiDBIdleTransactionTimeout                     = 0
        DefTiDBTxnEntrySizeLimit                          = 0
-       DefTiDBSchemaCacheSize                            = 0
+       DefTiDBSchemaCacheSize                            = 1024
        DefTiDBLowResolutionTSOUpdateInterval             = 2000

make ut X='run pkg/executor/test/ddl TestRenameTable'

• No need to test

  • I checked and no code files have been changed.

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 @GMHDBJD. Thanks for your PR.

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[codecov]

Codecov Report

Merging #52151 (12cf7b3) into master (e925628) will decrease coverage by 16.0212%.
Report is 6 commits behind head on master.
The diff coverage is 86.9565%.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #52151         +/-   ##
=================================================
- Coverage   70.7031%   54.6820%   -16.0212%     
=================================================
  Files          1487       1600        +113     
  Lines        439607     610025     +170418     
=================================================
+ Hits         310816     333574      +22758     
- Misses       109317     253225     +143908     
- Partials      19474      23226       +3752     

Flag	Coverage Δ
integration	36.6174% <73.9130%> (?)
unit	70.4456% <86.9565%> (-0.0754%)	⬇️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	51.5679% <ø> (+5.7499%)	⬆️

[GMHDBJD]

/retest

[tiprow]

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/retest

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tiancaiamao, ywqzzy

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-03-27 10:41:42.63605 +0000 UTC m=+2064529.658296387: ☑️ agreed by tiancaiamao.
• 2024-03-28 02:29:25.112053484 +0000 UTC m=+2121392.134299872: ☑️ agreed by ywqzzy.