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An example that crashes BadgerDB (fixed)
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package main | |
import ( | |
"log" | |
"math/rand" | |
"time" | |
"github.com/dgraph-io/badger/v3" | |
) | |
const ( | |
ValueThreshold int64 = 1 << 10 | |
// let the value size greater than threshold | |
MaxValueSize int = 1 << 11 | |
) | |
func main() { | |
rand.Seed(time.Now().UnixNano()) | |
for i := 0; i < 100; i++ { | |
opts := badger.DefaultOptions("tmp/badger") | |
opts = opts.WithValueThreshold(ValueThreshold) | |
db, err := badger.Open(opts) | |
if err != nil { | |
log.Fatalln(err) | |
} | |
populate(db) | |
if err := db.Close(); err != nil { | |
log.Fatalln(err) | |
} | |
time.Sleep(time.Second * 2) | |
} | |
} | |
func populate(db *badger.DB) { | |
wb := db.NewWriteBatch() | |
defer wb.Cancel() | |
for i := 0; i < 10000; i++ { | |
err := wb.Set(randBytes(128), randBytes(MaxValueSize)) | |
if err != nil { | |
log.Fatalln(err) | |
} | |
} | |
err := wb.Flush() | |
if err != nil { | |
log.Fatalln(err) | |
} | |
} | |
func randBytes(n int) []byte { | |
data := make([]byte, rand.Intn(n)+1) | |
for i := range data { | |
data[i] = byte(rand.Intn(256)) | |
} | |
return data | |
} |
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