# Badgerdb crashing on save

**URL:** <https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427>\
**Category:** Badger\
**Tags:** area:crash\
**Created:** [June 16, 2022, 11:44am UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427 "2022-06-16T11:44:49Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ravindra\_Sharma](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/ravindra_sharma/32/9847_2.png) [@Ravindra\_Sharma](https://discuss.dgraph.io/u/Ravindra_Sharma)\
**Post date:** [June 16, 2022, 11:44am UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427/1 "2022-06-16T11:44:49Z")

</div>

### What version of Go are you using (`go version`)?

```
$ go version 1.18.3
```

### What operating system are you using?

Ubuntu

### What version of Badger are you using?

v3 v3.2103.2

### Does this issue reproduce with the latest master?

yes

### Steps to Reproduce the issue

Following Code

```auto
func Save(db *badger.DB) fiber.Handler {
	return func(ctx *fiber.Ctx) error {
		// response end client receives
		response := client.Response{
			Success: false,
			Key: "",
			Value: "",
			Message: "",
			CreatedAt: "",
		}
		entry := new(client.Payload)
		if err := ctx.BodyParser(&entry); err != nil {
			response.Message = helpers.ErrorPrint(err.Error())
			return ctx.Status(400).JSON(response)
		}
		if !helpers.ValidateMinLength(entry.Key, 4) {
			response.Message = helpers.ErrorPrint(locale.LEN1001 + " min: 4")
			return ctx.Status(400).JSON(response)
		}
		if !helpers.ValidateMaxLength(entry.Key, 100) {
			response.Message = helpers.ErrorPrint(locale.LEN1001 + " max: 64")
			return ctx.Status(400).JSON(response)
		}
		if !helpers.ValidateMinLength(entry.Value, 2) {
			response.Message = helpers.ErrorPrint(locale.LEN1001 + " min: 2")
			return ctx.Status(400).JSON(response)
		}
		createdAt := time.Now().Format("2006-01-02 15:04:05")
		err := db.Update(func(txn *badger.Txn) error {
			if err := txn.Set([]byte(entry.Key), []byte(entry.Value)); err == badger.ErrTxnTooBig {
				_ = txn.Commit()
				txn = db.NewTransaction(true)
				_ = txn.Set([]byte(entry.Key), []byte(entry.Value))
			}
			_ = txn.Set([]byte(entry.Key+"-date"), []byte(createdAt))
			return nil
		})

		if err != nil {
			response.Message = helpers.ErrorPrint(err.Error())
			return ctx.Status(400).JSON(response)
		}
		response.Success = true
		response.Message = "done"
		response.Key = entry.Key
		response.Value = entry.Value
		response.CreatedAt = createdAt
		return ctx.Status(200).JSON(response)
	}

}

```

### What Badger options were set?

```auto
options := badger.DefaultOptions("")
options.NumVersionsToKeep = 1
options.ValueDir = /root/playingdb/db/
options.Dir = /root/playingdb/db/
options.InMemory = false
options.BypassLockGuard = true

```

### What did you do?

Saving the data in badger it is not working

### What did you expect to see?

successfully saved

### What did you see instead?

Crash

```auto
unexpected fault address 0xad2328
fatal error: fault
[signal SIGSEGV: segmentation violation code=0x2 addr=0xad2328 pc=0x411283]

goroutine 12 [running]:
runtime.throw({0xa8d679?, 0x0?})
        /snap/go/9848/src/runtime/panic.go:992 +0x71 fp=0xc000ac6430 sp=0xc000ac6400 pc=0x436431
runtime.sigpanic()
        /snap/go/9848/src/runtime/signal_unix.go:825 +0x305 fp=0xc000ac6480 sp=0xc000ac6430 pc=0x44baa5
runtime.mapiterinit(0x0?, 0x0?, 0x0?)
        /snap/go/9848/src/runtime/map.go:821 +0x23 fp=0xc000ac64a0 sp=0xc000ac6480 pc=0x411283
reflect.mapiterinit(0x0?, 0x0?, 0x0?)
        /snap/go/9848/src/runtime/map.go:1373 +0x19 fp=0xc000ac64c8 sp=0xc000ac64a0 pc=0x460399
github.com/gofiber/fiber/v2/internal/go-json/encoder/vm.Run(0xc0006ce9c0, {0xc0000be800?, 0xc0006e9780?, 0x0?}, 0x0?)
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/internal/go-json/encoder/vm/vm.go:425 +0x1fb7 fp=0xc000ac9938 sp=0xc000ac64c8 pc=0x889d37
github.com/gofiber/fiber/v2/internal/go-json.encodeRunCode(0xa10e80?, {0xc0000be800?, 0xfc19e8?, 0xc001563978?}, 0x1?)
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/internal/go-json/encode.go:307 +0x68 fp=0xc000ac9970 sp=0xc000ac9938 pc=0x8b8dc8
github.com/gofiber/fiber/v2/internal/go-json.encode(0xc0006ce9c0, {0xa10e80, 0xc000590180})
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/internal/go-json/encode.go:232 +0x21c fp=0xc000ac99f0 sp=0xc000ac9970 pc=0x8b8cbc
github.com/gofiber/fiber/v2/internal/go-json.marshal({0xa10e80, 0xc000590180}, {0x0, 0x0, 0x414a79?})
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/internal/go-json/encode.go:147 +0xba fp=0xc000ac9a50 sp=0xc000ac99f0 pc=0x8b897a
github.com/gofiber/fiber/v2/internal/go-json.MarshalWithOption(...)
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/internal/go-json/json.go:186
github.com/gofiber/fiber/v2/internal/go-json.Marshal({0xa10e80?, 0xc000590180?})
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/internal/go-json/json.go:171 +0x2a fp=0xc000ac9a88 sp=0xc000ac9a50 pc=0x8b8e4a
github.com/gofiber/fiber/v2.(*Ctx).JSON(0xc0000e82c0, {0xa10e80?, 0xc000590180?})
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/ctx.go:651 +0x3c fp=0xc000ac9ae0 sp=0xc000ac9a88 pc=0x99489c
main.main.func1(0xc0000e82c0, {0xb8b200?, 0xc0000a0b70?})
        /root/playingDB/main.go:47 +0x10b fp=0xc000ac9b18 sp=0xc000ac9ae0 pc=0x9a726b
github.com/gofiber/fiber/v2.(*App).ErrorHandler(0xc0001221a0, 0xc0000e82c0, {0xb8b200, 0xc0000a0b70})
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/app.go:905 +0x1d3 fp=0xc000ac9be0 sp=0xc000ac9b18 pc=0x98ed93
github.com/gofiber/fiber/v2.(*App).handler(0xc0001221a0, 0x4b9a97?)
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/router.go:157 +0x105 fp=0xc000ac9c20 sp=0xc000ac9be0 pc=0x99ee05
github.com/gofiber/fiber/v2.(*App).handler-fm(0xc0006d6000?)
        <autogenerated>:1 +0x2c fp=0xc000ac9c40 sp=0xc000ac9c20 pc=0x9a318c
github.com/valyala/fasthttp.(*Server).serveConn(0xc000318000, {0xb902e8?, 0xc0000a60d0})
        /root/playingDB/vendor/github.com/valyala/fasthttp/server.go:2278 +0x12e7 fp=0xc000ac9ec8 sp=0xc000ac9c40 pc=0x95be07
github.com/valyala/fasthttp.(*Server).serveConn-fm({0xb902e8?, 0xc0000a60d0?})
        <autogenerated>:1 +0x39 fp=0xc000ac9ef0 sp=0xc000ac9ec8 pc=0x96acd9
github.com/valyala/fasthttp.(*workerPool).workerFunc(0xc0000c6780, 0xc000068300)
        /root/playingDB/vendor/github.com/valyala/fasthttp/workerpool.go:223 +0xa9 fp=0xc000ac9fa0 sp=0xc000ac9ef0 pc=0x9673a9
github.com/valyala/fasthttp.(*workerPool).getCh.func1()
        /root/playingDB/vendor/github.com/valyala/fasthttp/workerpool.go:195 +0x38 fp=0xc000ac9fe0 sp=0xc000ac9fa0 pc=0x967138
runtime.goexit()
        /snap/go/9848/src/runtime/asm_amd64.s:1571 +0x1 fp=0xc000ac9fe8 sp=0xc000ac9fe0 pc=0x466021
created by github.com/valyala/fasthttp.(*workerPool).getCh
        /root/playingDB/vendor/github.com/valyala/fasthttp/workerpool.go:194 +0x1b0

goroutine 1 [IO wait, 2 minutes]:
internal/poll.runtime_pollWait(0x7f1a282811d8, 0x72)
        /snap/go/9848/src/runtime/netpoll.go:302 +0x89
internal/poll.(*pollDesc).wait(0xc000120580?, 0x30?, 0x0)
        /snap/go/9848/src/internal/poll/fd_poll_runtime.go:83 +0x32
internal/poll.(*pollDesc).waitRead(...)
        /snap/go/9848/src/internal/poll/fd_poll_runtime.go:88
internal/poll.(*FD).Accept(0xc000120580)
        /snap/go/9848/src/internal/poll/fd_unix.go:614 +0x22c
net.(*netFD).accept(0xc000120580)
        /snap/go/9848/src/net/fd_unix.go:172 +0x35
net.(*TCPListener).accept(0xc0000a0a50)
        /snap/go/9848/src/net/tcpsock_posix.go:139 +0x28
net.(*TCPListener).Accept(0xc0000a0a50)
        /snap/go/9848/src/net/tcpsock.go:288 +0x3d
github.com/valyala/fasthttp.acceptConn(0xc000318000, {0xb8e228, 0xc0000a0a50}, 0xc00155ba88)
        /root/playingDB/vendor/github.com/valyala/fasthttp/server.go:1849 +0x62
github.com/valyala/fasthttp.(*Server).Serve(0xc000318000, {0xb8e228?, 0xc0000a0a50})
        /root/playingDB/vendor/github.com/valyala/fasthttp/server.go:1764 +0x4ca
github.com/gofiber/fiber/v2.(*App).Listen(0xc0001221a0, {0xc000599d83?, 0xc000032088?})
        /root/playingDB/vendor/github.com/gofiber/fiber/v2/app.go:690 +0xbd
main.main()
        /root/playingDB/main.go:142 +0x3ae

goroutine 19 [chan receive]:
github.com/golang/glog.(*loggingT).flushDaemon(0x0?)
        /root/playingDB/vendor/github.com/golang/glog/glog.go:882 +0x6a
created by github.com/golang/glog.init.0
        /root/playingDB/vendor/github.com/golang/glog/glog.go:410 +0x1bf

goroutine 20 [select, 2 minutes]:
github.com/dgraph-io/badger/v3/y.(*WaterMark).process(0xc0001d4ab0, 0xc0001d4a80)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/y/watermark.go:214 +0x285
created by github.com/dgraph-io/badger/v3/y.(*WaterMark).Init
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/y/watermark.go:72 +0xaa

goroutine 21 [select, 2 minutes]:
github.com/dgraph-io/badger/v3/y.(*WaterMark).process(0xc0001d4ae0, 0xc0001d4a80)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/y/watermark.go:214 +0x285
created by github.com/dgraph-io/badger/v3/y.(*WaterMark).Init
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/y/watermark.go:72 +0xaa

goroutine 22 [select]:
github.com/dgraph-io/ristretto/z.(*AllocatorPool).freeupAllocators(0xc0000a0f60)
        /root/playingDB/vendor/github.com/dgraph-io/ristretto/z/allocator.go:385 +0x150
created by github.com/dgraph-io/ristretto/z.NewAllocatorPool
        /root/playingDB/vendor/github.com/dgraph-io/ristretto/z/allocator.go:324 +0xc5

goroutine 6 [select, 2 minutes]:
github.com/dgraph-io/ristretto.(*defaultPolicy).processItems(0xc000072040)
        /root/playingDB/vendor/github.com/dgraph-io/ristretto/policy.go:102 +0x91
created by github.com/dgraph-io/ristretto.newDefaultPolicy
        /root/playingDB/vendor/github.com/dgraph-io/ristretto/policy.go:86 +0x156

goroutine 7 [select]:
github.com/dgraph-io/ristretto.(*Cache).processItems(0xc000120000)
        /root/playingDB/vendor/github.com/dgraph-io/ristretto/cache.go:452 +0x15e
created by github.com/dgraph-io/ristretto.NewCache
        /root/playingDB/vendor/github.com/dgraph-io/ristretto/cache.go:207 +0x696

goroutine 8 [select, 2 minutes]:
github.com/dgraph-io/badger/v3.(*DB).monitorCache(0xc0000bb200, 0xc0001d4870)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:469 +0x18a
created by github.com/dgraph-io/badger/v3.Open
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:311 +0xc8b

goroutine 9 [select, 2 minutes]:
github.com/dgraph-io/badger/v3.(*DB).updateSize(0xc0000bb200, 0xc0001d4cf0)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:1171 +0x158
created by github.com/dgraph-io/badger/v3.Open
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:331 +0xe8c

goroutine 26 [select]:
github.com/dgraph-io/badger/v3.(*levelsController).runCompactor(0xc00010e000, 0x0, 0xc0001d4d50)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/levels.go:508 +0x30d
created by github.com/dgraph-io/badger/v3.(*levelsController).startCompact
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/levels.go:354 +0x4e

goroutine 27 [select]:
github.com/dgraph-io/badger/v3.(*levelsController).runCompactor(0xc00010e000, 0x1, 0xc0001d4d50)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/levels.go:508 +0x30d
created by github.com/dgraph-io/badger/v3.(*levelsController).startCompact
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/levels.go:354 +0x4e

goroutine 28 [select]:
github.com/dgraph-io/badger/v3.(*levelsController).runCompactor(0xc00010e000, 0x2, 0xc0001d4d50)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/levels.go:508 +0x30d
created by github.com/dgraph-io/badger/v3.(*levelsController).startCompact
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/levels.go:354 +0x4e

goroutine 29 [select]:
github.com/dgraph-io/badger/v3.(*levelsController).runCompactor(0xc00010e000, 0x3, 0xc0001d4d50)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/levels.go:508 +0x30d
created by github.com/dgraph-io/badger/v3.(*levelsController).startCompact
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/levels.go:354 +0x4e

goroutine 30 [chan receive, 2 minutes]:
github.com/dgraph-io/badger/v3.(*DB).flushMemtable(0xc0000bb200, 0x0?)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:1078 +0xb2
github.com/dgraph-io/badger/v3.Open.func5()
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:357 +0x25
created by github.com/dgraph-io/badger/v3.Open
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:356 +0x107c

goroutine 31 [select, 2 minutes]:
github.com/dgraph-io/badger/v3.(*vlogThreshold).listenForValueThresholdUpdate(0xc0000c88c0)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/value.go:1172 +0x11a
created by github.com/dgraph-io/badger/v3.Open
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:380 +0x16dc

goroutine 32 [select, 2 minutes]:
github.com/dgraph-io/badger/v3.(*DB).doWrites(0xc0000bb200, 0xc0001d4ea0)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:900 +0x236
created by github.com/dgraph-io/badger/v3.Open
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:387 +0x179c

goroutine 33 [chan receive, 2 minutes]:
github.com/dgraph-io/badger/v3.(*valueLog).waitOnGC(0xc0000bb3f8, 0x0?)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/value.go:1079 +0x7d
created by github.com/dgraph-io/badger/v3.Open
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:391 +0x185b

goroutine 34 [select, 2 minutes]:
github.com/dgraph-io/badger/v3.(*publisher).listenForUpdates(0xc0001d4ba0, 0xc0001d4f00)
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/publisher.go:73 +0x150
created by github.com/dgraph-io/badger/v3.Open
        /root/playingDB/vendor/github.com/dgraph-io/badger/v3/db.go:395 +0x190a

goroutine 35 [chan receive, 2 minutes]:
main.main.func5()
        /root/playingDB/main.go:118 +0x94
created by main.main
        /root/playingDB/main.go:113 +0x365

goroutine 11 [syscall, 2 minutes]:
os/signal.signal_recv()
        /snap/go/9848/src/runtime/sigqueue.go:151 +0x2f
os/signal.loop()
        /snap/go/9848/src/os/signal/signal_unix.go:23 +0x19
created by os/signal.Notify.func1.1
        /snap/go/9848/src/os/signal/signal.go:151 +0x2a

goroutine 36 [sleep]:
time.Sleep(0x2540be400)
        /snap/go/9848/src/runtime/time.go:194 +0x12e
github.com/valyala/fasthttp.(*workerPool).Start.func2()
        /root/playingDB/vendor/github.com/valyala/fasthttp/workerpool.go:66 +0x56
created by github.com/valyala/fasthttp.(*workerPool).Start
        /root/playingDB/vendor/github.com/valyala/fasthttp/workerpool.go:58 +0xd9

goroutine 13 [sleep]:
time.Sleep(0x3b9aca00)
        /snap/go/9848/src/runtime/time.go:194 +0x12e
github.com/valyala/fasthttp.updateServerDate.func1()
        /root/playingDB/vendor/github.com/valyala/fasthttp/header.go:1590 +0x1e
created by github.com/valyala/fasthttp.updateServerDate
        /root/playingDB/vendor/github.com/valyala/fasthttp/header.go:1588 +0x25
exit status 2

```

---

<div class="post-metadata">

**Author:** ![Ravindra\_Sharma](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/ravindra_sharma/32/9847_2.png) [@Ravindra\_Sharma](https://discuss.dgraph.io/u/Ravindra_Sharma)\
**Post date:** [June 17, 2022, 9:14am UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427/2 "2022-06-17T09:14:40Z")

</div>

bump ~ This started happening after having 100K get requests in 1 min. All “set” failed on DB

---

<div class="post-metadata">

**Author:** ![Ravindra\_Sharma](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/ravindra_sharma/32/9847_2.png) [@Ravindra\_Sharma](https://discuss.dgraph.io/u/Ravindra_Sharma)\
**Post date:** [June 17, 2022, 3:28pm UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427/3 "2022-06-17T15:28:27Z")

</div>

@mrjn @pawan - Please share any input on why BadgerDB is not storing any data?

---

<div class="post-metadata">

**Author:** ![Ravindra\_Sharma](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/ravindra_sharma/32/9847_2.png) [@Ravindra\_Sharma](https://discuss.dgraph.io/u/Ravindra_Sharma)\
**Post date:** [June 17, 2022, 3:29pm UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427/4 "2022-06-17T15:29:11Z")

</div>

@MichelDiz @dmai - Please share any input on why BadgerDB is not storing any data?

---

<div class="post-metadata">

**Author:** ![vnium](https://avatars.discourse-cdn.com/v4/letter/v/e56c9b/32.png) [@vnium](https://discuss.dgraph.io/u/vnium)\
**Post date:** [June 17, 2022, 7:18pm UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427/5 "2022-06-17T19:18:37Z")

</div>

From the logs it looks like the segmentation fault is originating from gojson.

---

<div class="post-metadata">

**Author:** ![amaster507](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/amaster507/32/4123_2.png) [@amaster507](https://discuss.dgraph.io/u/amaster507)\
**Post date:** [June 18, 2022, 3:51am UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427/6 "2022-06-18T03:51:46Z")

</div>

None of those people work at Dgraph anymore. Try with @akon but I don’t think anyone is really supporting badger at all at the moment.

---

<div class="post-metadata">

**Author:** ![Ravindra\_Sharma](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/ravindra_sharma/32/9847_2.png) [@Ravindra\_Sharma](https://discuss.dgraph.io/u/Ravindra_Sharma)\
**Post date:** [June 18, 2022, 4:45am UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427/7 "2022-06-18T04:45:35Z")

</div>

is badgerdb deprecated now?

---

<div class="post-metadata">

**Author:** ![jarifibrahim](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/jarifibrahim/32/9077_2.png) [@jarifibrahim](https://discuss.dgraph.io/u/jarifibrahim)\
**Post date:** [July 7, 2022, 11:18am UTC](https://discuss.dgraph.io/t/badgerdb-crashing-on-save/17427/8 "2022-07-07T11:18:51Z")

</div>

@Ravindra_Sharma you might want to try printing the error from set/commit function?  
From the stack trace it doesn’t look like badger crashed. The segmentation fault points to some JSON code.