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fix: [fs] CompleteMultipart use trie structure for partMatch (#10522)

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performance improves by around 100x or more

```
go test -v -run NONE -bench BenchmarkGetPartFile
goos: linux
goarch: amd64
pkg: github.com/minio/minio/cmd
BenchmarkGetPartFileWithTrie
BenchmarkGetPartFileWithTrie-4          1000000000               0.140 ns/op           0 B/op          0 allocs/op
PASS
ok      github.com/minio/minio/cmd      1.737s
```

fixes #10520
This commit is contained in:
Harshavardhana
2020-09-21 01:18:13 -07:00
committed by GitHub
parent 230fc0d186
commit 3831cc9e3b
5 changed files with 52 additions and 60 deletions
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10
cmd/main.go
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@@ -102,21 +102,19 @@ func newApp(name string) *cli.App {
findClosestCommands := func(command string) []string {
var closestCommands []string
for _, value := range commandsTree.PrefixMatch(command) {
closestCommands = append(closestCommands, value.(string))
}
closestCommands = append(closestCommands, commandsTree.PrefixMatch(command)...)
sort.Strings(closestCommands)
// Suggest other close commands - allow missed, wrongly added and
// even transposed characters
for _, value := range commandsTree.Walk(commandsTree.Root()) {
if sort.SearchStrings(closestCommands, value.(string)) < len(closestCommands) {
if sort.SearchStrings(closestCommands, value) < len(closestCommands) {
continue
}
// 2 is arbitrary and represents the max
// allowed number of typed errors
if words.DamerauLevenshteinDistance(command, value.(string)) < 2 {
closestCommands = append(closestCommands, value.(string))
if words.DamerauLevenshteinDistance(command, value) < 2 {
closestCommands = append(closestCommands, value)
}
}