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e2e: ensure schemas have ranges that land on all nodes
in order for the newenemy test to work, we need to ensure that the additional reads for namespaces that have been added for namespace versioning do not re-sync timestamps across cockroach nodes. by first filling the datastore with a large number of namespaces, we can pick one that has a range leader on the slow node, so that future writes to the slow node don't involve reads from other nodes the core of the test is otherwise the same, though extra machinery for reasoning about range leaders was added
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| package generator | ||
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| import "github.com/brianvoe/gofakeit/v6" | ||
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| type UniqueGenerator struct { | ||
| seen map[string]struct{} | ||
| regex string | ||
| } | ||
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| func NewUniqueGenerator(regex string) *UniqueGenerator { | ||
| return &UniqueGenerator{ | ||
| seen: make(map[string]struct{}, 0), | ||
| regex: regex, | ||
| } | ||
| } | ||
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| func (g *UniqueGenerator) Next() string { | ||
| for { | ||
| val := gofakeit.Regex(g.regex) | ||
| if _, ok := g.seen[val]; !ok { | ||
| g.seen[val] = struct{}{} | ||
| return val | ||
| } | ||
| } | ||
| } |
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