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log-backup: should set default value gc.ratio-threshold after pitr finished (#40141) #40366

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6 changes: 6 additions & 0 deletions br/pkg/task/stream.go
Original file line number Diff line number Diff line change
Expand Up @@ -480,6 +480,12 @@ func KeepGcDisabled(g glue.Glue, store kv.Storage) (RestoreFunc, error) {
return nil, errors.Trace(err)
}

// If the oldRatio is negative, which is not normal status.
// It should set default value "1.1" after PiTR finished.
if strings.HasPrefix(oldRatio, "-") {
oldRatio = "1.1"
}

return func() error {
return utils.SetGcRatio(execCtx, oldRatio)
}, nil
Expand Down