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affects-6.5This bug affects the 6.5.x(LTS) versions.This bug affects the 6.5.x(LTS) versions.affects-7.1This bug affects the 7.1.x(LTS) versions.This bug affects the 7.1.x(LTS) versions.affects-7.5This bug affects the 7.5.x(LTS) versions.This bug affects the 7.5.x(LTS) versions.affects-8.1This bug affects the 8.1.x(LTS) versions.This bug affects the 8.1.x(LTS) versions.affects-8.5This bug affects the 8.5.x(LTS) versions.This bug affects the 8.5.x(LTS) versions.component/ddlThis issue is related to DDL of TiDB.This issue is related to DDL of TiDB.severity/majortype/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.
Description
We introduced a store write limiter in #35193 to reduce the impact on online services.
But we can not set this when adding index utilizes lightning local backend.
A new variable is needed to reduce the impact of ADD INDEX on online services
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affects-6.5This bug affects the 6.5.x(LTS) versions.This bug affects the 6.5.x(LTS) versions.affects-7.1This bug affects the 7.1.x(LTS) versions.This bug affects the 7.1.x(LTS) versions.affects-7.5This bug affects the 7.5.x(LTS) versions.This bug affects the 7.5.x(LTS) versions.affects-8.1This bug affects the 8.1.x(LTS) versions.This bug affects the 8.1.x(LTS) versions.affects-8.5This bug affects the 8.5.x(LTS) versions.This bug affects the 8.5.x(LTS) versions.component/ddlThis issue is related to DDL of TiDB.This issue is related to DDL of TiDB.severity/majortype/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.