sysvar: add 2 sysvars (#10662) (#10696) #10712
Merged
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This is an automated cherry-pick of #10696
This is an automated cherry-pick of #10662
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docs-cn#11328 update some system variable docs-cn#11375 system-variable.md: add description for tidb_simplified_metrics docs-cn#11431 update system variable docs-cn#11505Do your changes match any of the following descriptions?