681 lines
17 KiB
Go
681 lines
17 KiB
Go
|
/*
|
||
|
|
* Copyright 2017 Dgraph Labs, Inc. and Contributors
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package badger
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"io/ioutil"
|
||
|
|
"math/rand"
|
||
|
|
"os"
|
||
|
|
"testing"
|
||
|
|
|
||
|
|
"github.com/dgraph-io/badger/y"
|
||
|
|
"github.com/stretchr/testify/require"
|
||
|
|
"golang.org/x/net/trace"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestValueBasic(t *testing.T) {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
y.Check(err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
|
||
|
|
kv, _ := Open(getTestOptions(dir))
|
||
|
|
defer kv.Close()
|
||
|
|
log := &kv.vlog
|
||
|
|
|
||
|
|
// Use value big enough that the value log writes them even if SyncWrites is false.
|
||
|
|
const val1 = "sampleval012345678901234567890123"
|
||
|
|
const val2 = "samplevalb012345678901234567890123"
|
||
|
|
require.True(t, len(val1) >= kv.opt.ValueThreshold)
|
||
|
|
|
||
|
|
e := &Entry{
|
||
|
|
Key: []byte("samplekey"),
|
||
|
|
Value: []byte(val1),
|
||
|
|
meta: bitValuePointer,
|
||
|
|
}
|
||
|
|
e2 := &Entry{
|
||
|
|
Key: []byte("samplekeyb"),
|
||
|
|
Value: []byte(val2),
|
||
|
|
meta: bitValuePointer,
|
||
|
|
}
|
||
|
|
|
||
|
|
b := new(request)
|
||
|
|
b.Entries = []*Entry{e, e2}
|
||
|
|
|
||
|
|
log.write([]*request{b})
|
||
|
|
require.Len(t, b.Ptrs, 2)
|
||
|
|
t.Logf("Pointer written: %+v %+v\n", b.Ptrs[0], b.Ptrs[1])
|
||
|
|
|
||
|
|
s := new(y.Slice)
|
||
|
|
buf1, cb1, err1 := log.readValueBytes(b.Ptrs[0], s)
|
||
|
|
buf2, cb2, err2 := log.readValueBytes(b.Ptrs[1], s)
|
||
|
|
require.NoError(t, err1)
|
||
|
|
require.NoError(t, err2)
|
||
|
|
defer runCallback(cb1)
|
||
|
|
defer runCallback(cb2)
|
||
|
|
|
||
|
|
readEntries := []Entry{valueBytesToEntry(buf1), valueBytesToEntry(buf2)}
|
||
|
|
require.EqualValues(t, []Entry{
|
||
|
|
{
|
||
|
|
Key: []byte("samplekey"),
|
||
|
|
Value: []byte(val1),
|
||
|
|
meta: bitValuePointer,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
Key: []byte("samplekeyb"),
|
||
|
|
Value: []byte(val2),
|
||
|
|
meta: bitValuePointer,
|
||
|
|
},
|
||
|
|
}, readEntries)
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestValueGC(t *testing.T) {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
opt := getTestOptions(dir)
|
||
|
|
opt.ValueLogFileSize = 1 << 20
|
||
|
|
|
||
|
|
kv, _ := Open(opt)
|
||
|
|
defer kv.Close()
|
||
|
|
|
||
|
|
sz := 32 << 10
|
||
|
|
txn := kv.NewTransaction(true)
|
||
|
|
for i := 0; i < 100; i++ {
|
||
|
|
v := make([]byte, sz)
|
||
|
|
rand.Read(v[:rand.Intn(sz)])
|
||
|
|
require.NoError(t, txn.Set([]byte(fmt.Sprintf("key%d", i)), v))
|
||
|
|
if i%20 == 0 {
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
txn = kv.NewTransaction(true)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
|
||
|
|
for i := 0; i < 45; i++ {
|
||
|
|
txnDelete(t, kv, []byte(fmt.Sprintf("key%d", i)))
|
||
|
|
}
|
||
|
|
|
||
|
|
kv.vlog.filesLock.RLock()
|
||
|
|
lf := kv.vlog.filesMap[kv.vlog.sortedFids()[0]]
|
||
|
|
kv.vlog.filesLock.RUnlock()
|
||
|
|
|
||
|
|
// lf.iterate(0, func(e Entry) bool {
|
||
|
|
// e.print("lf")
|
||
|
|
// return true
|
||
|
|
// })
|
||
|
|
|
||
|
|
tr := trace.New("Test", "Test")
|
||
|
|
defer tr.Finish()
|
||
|
|
kv.vlog.rewrite(lf, tr)
|
||
|
|
for i := 45; i < 100; i++ {
|
||
|
|
key := []byte(fmt.Sprintf("key%d", i))
|
||
|
|
|
||
|
|
require.NoError(t, kv.View(func(txn *Txn) error {
|
||
|
|
item, err := txn.Get(key)
|
||
|
|
require.NoError(t, err)
|
||
|
|
val := getItemValue(t, item)
|
||
|
|
require.NotNil(t, val)
|
||
|
|
require.True(t, len(val) == sz, "Size found: %d", len(val))
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestValueGC2(t *testing.T) {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
opt := getTestOptions(dir)
|
||
|
|
opt.ValueLogFileSize = 1 << 20
|
||
|
|
|
||
|
|
kv, _ := Open(opt)
|
||
|
|
defer kv.Close()
|
||
|
|
|
||
|
|
sz := 32 << 10
|
||
|
|
txn := kv.NewTransaction(true)
|
||
|
|
for i := 0; i < 100; i++ {
|
||
|
|
v := make([]byte, sz)
|
||
|
|
rand.Read(v[:rand.Intn(sz)])
|
||
|
|
require.NoError(t, txn.Set([]byte(fmt.Sprintf("key%d", i)), v))
|
||
|
|
if i%20 == 0 {
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
txn = kv.NewTransaction(true)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
|
||
|
|
for i := 0; i < 5; i++ {
|
||
|
|
txnDelete(t, kv, []byte(fmt.Sprintf("key%d", i)))
|
||
|
|
}
|
||
|
|
|
||
|
|
for i := 5; i < 10; i++ {
|
||
|
|
v := []byte(fmt.Sprintf("value%d", i))
|
||
|
|
txnSet(t, kv, []byte(fmt.Sprintf("key%d", i)), v, 0)
|
||
|
|
}
|
||
|
|
|
||
|
|
kv.vlog.filesLock.RLock()
|
||
|
|
lf := kv.vlog.filesMap[kv.vlog.sortedFids()[0]]
|
||
|
|
kv.vlog.filesLock.RUnlock()
|
||
|
|
|
||
|
|
// lf.iterate(0, func(e Entry) bool {
|
||
|
|
// e.print("lf")
|
||
|
|
// return true
|
||
|
|
// })
|
||
|
|
|
||
|
|
tr := trace.New("Test", "Test")
|
||
|
|
defer tr.Finish()
|
||
|
|
kv.vlog.rewrite(lf, tr)
|
||
|
|
for i := 0; i < 5; i++ {
|
||
|
|
key := []byte(fmt.Sprintf("key%d", i))
|
||
|
|
require.NoError(t, kv.View(func(txn *Txn) error {
|
||
|
|
_, err := txn.Get(key)
|
||
|
|
require.Equal(t, ErrKeyNotFound, err)
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
}
|
||
|
|
for i := 5; i < 10; i++ {
|
||
|
|
key := []byte(fmt.Sprintf("key%d", i))
|
||
|
|
require.NoError(t, kv.View(func(txn *Txn) error {
|
||
|
|
item, err := txn.Get(key)
|
||
|
|
require.NoError(t, err)
|
||
|
|
val := getItemValue(t, item)
|
||
|
|
require.NotNil(t, val)
|
||
|
|
require.Equal(t, string(val), fmt.Sprintf("value%d", i))
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
}
|
||
|
|
for i := 10; i < 100; i++ {
|
||
|
|
key := []byte(fmt.Sprintf("key%d", i))
|
||
|
|
require.NoError(t, kv.View(func(txn *Txn) error {
|
||
|
|
item, err := txn.Get(key)
|
||
|
|
require.NoError(t, err)
|
||
|
|
val := getItemValue(t, item)
|
||
|
|
require.NotNil(t, val)
|
||
|
|
require.True(t, len(val) == sz, "Size found: %d", len(val))
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestValueGC3(t *testing.T) {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
opt := getTestOptions(dir)
|
||
|
|
opt.ValueLogFileSize = 1 << 20
|
||
|
|
|
||
|
|
kv, err := Open(opt)
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer kv.Close()
|
||
|
|
|
||
|
|
// We want to test whether an iterator can continue through a value log GC.
|
||
|
|
|
||
|
|
valueSize := 32 << 10
|
||
|
|
|
||
|
|
var value3 []byte
|
||
|
|
txn := kv.NewTransaction(true)
|
||
|
|
for i := 0; i < 100; i++ {
|
||
|
|
v := make([]byte, valueSize) // 32K * 100 will take >=3'276'800 B.
|
||
|
|
if i == 3 {
|
||
|
|
value3 = v
|
||
|
|
}
|
||
|
|
rand.Read(v[:])
|
||
|
|
// Keys key000, key001, key002, such that sorted order matches insertion order
|
||
|
|
require.NoError(t, txn.Set([]byte(fmt.Sprintf("key%03d", i)), v))
|
||
|
|
if i%20 == 0 {
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
txn = kv.NewTransaction(true)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
|
||
|
|
// Start an iterator to keys in the first value log file
|
||
|
|
itOpt := IteratorOptions{
|
||
|
|
PrefetchValues: false,
|
||
|
|
PrefetchSize: 0,
|
||
|
|
Reverse: false,
|
||
|
|
}
|
||
|
|
|
||
|
|
txn = kv.NewTransaction(true)
|
||
|
|
it := txn.NewIterator(itOpt)
|
||
|
|
defer it.Close()
|
||
|
|
// Walk a few keys
|
||
|
|
it.Rewind()
|
||
|
|
require.True(t, it.Valid())
|
||
|
|
item := it.Item()
|
||
|
|
require.Equal(t, []byte("key000"), item.Key())
|
||
|
|
it.Next()
|
||
|
|
require.True(t, it.Valid())
|
||
|
|
item = it.Item()
|
||
|
|
require.Equal(t, []byte("key001"), item.Key())
|
||
|
|
it.Next()
|
||
|
|
require.True(t, it.Valid())
|
||
|
|
item = it.Item()
|
||
|
|
require.Equal(t, []byte("key002"), item.Key())
|
||
|
|
|
||
|
|
// Like other tests, we pull out a logFile to rewrite it directly
|
||
|
|
|
||
|
|
kv.vlog.filesLock.RLock()
|
||
|
|
logFile := kv.vlog.filesMap[kv.vlog.sortedFids()[0]]
|
||
|
|
kv.vlog.filesLock.RUnlock()
|
||
|
|
|
||
|
|
tr := trace.New("Test", "Test")
|
||
|
|
defer tr.Finish()
|
||
|
|
kv.vlog.rewrite(logFile, tr)
|
||
|
|
it.Next()
|
||
|
|
require.True(t, it.Valid())
|
||
|
|
item = it.Item()
|
||
|
|
require.Equal(t, []byte("key003"), item.Key())
|
||
|
|
|
||
|
|
v3, err := item.Value()
|
||
|
|
require.NoError(t, err)
|
||
|
|
require.Equal(t, value3, v3)
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestValueGC4(t *testing.T) {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
opt := getTestOptions(dir)
|
||
|
|
opt.ValueLogFileSize = 1 << 20
|
||
|
|
|
||
|
|
kv, _ := Open(opt)
|
||
|
|
defer kv.Close()
|
||
|
|
|
||
|
|
sz := 128 << 10 // 5 entries per value log file.
|
||
|
|
txn := kv.NewTransaction(true)
|
||
|
|
for i := 0; i < 24; i++ {
|
||
|
|
v := make([]byte, sz)
|
||
|
|
rand.Read(v[:rand.Intn(sz)])
|
||
|
|
require.NoError(t, txn.Set([]byte(fmt.Sprintf("key%d", i)), v))
|
||
|
|
if i%3 == 0 {
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
txn = kv.NewTransaction(true)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
|
||
|
|
for i := 0; i < 8; i++ {
|
||
|
|
txnDelete(t, kv, []byte(fmt.Sprintf("key%d", i)))
|
||
|
|
}
|
||
|
|
|
||
|
|
for i := 8; i < 16; i++ {
|
||
|
|
v := []byte(fmt.Sprintf("value%d", i))
|
||
|
|
txnSet(t, kv, []byte(fmt.Sprintf("key%d", i)), v, 0)
|
||
|
|
}
|
||
|
|
|
||
|
|
kv.vlog.filesLock.RLock()
|
||
|
|
lf0 := kv.vlog.filesMap[kv.vlog.sortedFids()[0]]
|
||
|
|
lf1 := kv.vlog.filesMap[kv.vlog.sortedFids()[1]]
|
||
|
|
kv.vlog.filesLock.RUnlock()
|
||
|
|
|
||
|
|
// lf.iterate(0, func(e Entry) bool {
|
||
|
|
// e.print("lf")
|
||
|
|
// return true
|
||
|
|
// })
|
||
|
|
|
||
|
|
tr := trace.New("Test", "Test")
|
||
|
|
defer tr.Finish()
|
||
|
|
kv.vlog.rewrite(lf0, tr)
|
||
|
|
kv.vlog.rewrite(lf1, tr)
|
||
|
|
|
||
|
|
// Replay value log
|
||
|
|
kv.vlog.Replay(valuePointer{Fid: 2}, replayFunction(kv))
|
||
|
|
|
||
|
|
for i := 0; i < 8; i++ {
|
||
|
|
key := []byte(fmt.Sprintf("key%d", i))
|
||
|
|
require.NoError(t, kv.View(func(txn *Txn) error {
|
||
|
|
_, err := txn.Get(key)
|
||
|
|
require.Equal(t, ErrKeyNotFound, err)
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
}
|
||
|
|
for i := 8; i < 16; i++ {
|
||
|
|
key := []byte(fmt.Sprintf("key%d", i))
|
||
|
|
require.NoError(t, kv.View(func(txn *Txn) error {
|
||
|
|
item, err := txn.Get(key)
|
||
|
|
require.NoError(t, err)
|
||
|
|
val := getItemValue(t, item)
|
||
|
|
require.NotNil(t, val)
|
||
|
|
require.Equal(t, string(val), fmt.Sprintf("value%d", i))
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestChecksums(t *testing.T) {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
|
||
|
|
// Set up SST with K1=V1
|
||
|
|
opts := getTestOptions(dir)
|
||
|
|
opts.Truncate = true
|
||
|
|
opts.ValueLogFileSize = 100 * 1024 * 1024 // 100Mb
|
||
|
|
kv, err := Open(opts)
|
||
|
|
require.NoError(t, err)
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
|
||
|
|
var (
|
||
|
|
k0 = []byte("k0")
|
||
|
|
k1 = []byte("k1")
|
||
|
|
k2 = []byte("k2")
|
||
|
|
k3 = []byte("k3")
|
||
|
|
v0 = []byte("value0-012345678901234567890123012345678901234567890123")
|
||
|
|
v1 = []byte("value1-012345678901234567890123012345678901234567890123")
|
||
|
|
v2 = []byte("value2-012345678901234567890123012345678901234567890123")
|
||
|
|
v3 = []byte("value3-012345678901234567890123012345678901234567890123")
|
||
|
|
)
|
||
|
|
// Make sure the value log would actually store the item
|
||
|
|
require.True(t, len(v0) >= kv.opt.ValueThreshold)
|
||
|
|
|
||
|
|
// Use a vlog with K0=V0 and a (corrupted) second transaction(k1,k2)
|
||
|
|
buf := createVlog(t, []*Entry{
|
||
|
|
{Key: k0, Value: v0},
|
||
|
|
{Key: k1, Value: v1},
|
||
|
|
{Key: k2, Value: v2},
|
||
|
|
})
|
||
|
|
buf[len(buf)-1]++ // Corrupt last byte
|
||
|
|
require.NoError(t, ioutil.WriteFile(vlogFilePath(dir, 0), buf, 0777))
|
||
|
|
|
||
|
|
// K1 should exist, but K2 shouldn't.
|
||
|
|
kv, err = Open(opts)
|
||
|
|
require.NoError(t, err)
|
||
|
|
|
||
|
|
require.NoError(t, kv.View(func(txn *Txn) error {
|
||
|
|
item, err := txn.Get(k0)
|
||
|
|
require.NoError(t, err)
|
||
|
|
require.Equal(t, getItemValue(t, item), v0)
|
||
|
|
|
||
|
|
_, err = txn.Get(k1)
|
||
|
|
require.Equal(t, ErrKeyNotFound, err)
|
||
|
|
|
||
|
|
_, err = txn.Get(k2)
|
||
|
|
require.Equal(t, ErrKeyNotFound, err)
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
|
||
|
|
// Write K3 at the end of the vlog.
|
||
|
|
txnSet(t, kv, k3, v3, 0)
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
|
||
|
|
// The vlog should contain K0 and K3 (K1 and k2 was lost when Badger started up
|
||
|
|
// last due to checksum failure).
|
||
|
|
kv, err = Open(opts)
|
||
|
|
require.NoError(t, err)
|
||
|
|
|
||
|
|
{
|
||
|
|
txn := kv.NewTransaction(false)
|
||
|
|
|
||
|
|
iter := txn.NewIterator(DefaultIteratorOptions)
|
||
|
|
iter.Seek(k0)
|
||
|
|
require.True(t, iter.Valid())
|
||
|
|
it := iter.Item()
|
||
|
|
require.Equal(t, it.Key(), k0)
|
||
|
|
require.Equal(t, getItemValue(t, it), v0)
|
||
|
|
iter.Next()
|
||
|
|
require.True(t, iter.Valid())
|
||
|
|
it = iter.Item()
|
||
|
|
require.Equal(t, it.Key(), k3)
|
||
|
|
require.Equal(t, getItemValue(t, it), v3)
|
||
|
|
|
||
|
|
iter.Close()
|
||
|
|
txn.Discard()
|
||
|
|
}
|
||
|
|
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestPartialAppendToValueLog(t *testing.T) {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
|
||
|
|
// Create skeleton files.
|
||
|
|
opts := getTestOptions(dir)
|
||
|
|
opts.Truncate = true
|
||
|
|
opts.ValueLogFileSize = 100 * 1024 * 1024 // 100Mb
|
||
|
|
kv, err := Open(opts)
|
||
|
|
require.NoError(t, err)
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
|
||
|
|
var (
|
||
|
|
k0 = []byte("k0")
|
||
|
|
k1 = []byte("k1")
|
||
|
|
k2 = []byte("k2")
|
||
|
|
k3 = []byte("k3")
|
||
|
|
v0 = []byte("value0-01234567890123456789012012345678901234567890123")
|
||
|
|
v1 = []byte("value1-01234567890123456789012012345678901234567890123")
|
||
|
|
v2 = []byte("value2-01234567890123456789012012345678901234567890123")
|
||
|
|
v3 = []byte("value3-01234567890123456789012012345678901234567890123")
|
||
|
|
)
|
||
|
|
// Values need to be long enough to actually get written to value log.
|
||
|
|
require.True(t, len(v3) >= kv.opt.ValueThreshold)
|
||
|
|
|
||
|
|
// Create truncated vlog to simulate a partial append.
|
||
|
|
// k0 - single transaction, k1 and k2 in another transaction
|
||
|
|
buf := createVlog(t, []*Entry{
|
||
|
|
{Key: k0, Value: v0},
|
||
|
|
{Key: k1, Value: v1},
|
||
|
|
{Key: k2, Value: v2},
|
||
|
|
})
|
||
|
|
buf = buf[:len(buf)-6]
|
||
|
|
require.NoError(t, ioutil.WriteFile(vlogFilePath(dir, 0), buf, 0777))
|
||
|
|
|
||
|
|
// Badger should now start up
|
||
|
|
kv, err = Open(opts)
|
||
|
|
require.NoError(t, err)
|
||
|
|
|
||
|
|
require.NoError(t, kv.View(func(txn *Txn) error {
|
||
|
|
item, err := txn.Get(k0)
|
||
|
|
require.NoError(t, err)
|
||
|
|
require.Equal(t, v0, getItemValue(t, item))
|
||
|
|
|
||
|
|
_, err = txn.Get(k1)
|
||
|
|
require.Equal(t, ErrKeyNotFound, err)
|
||
|
|
_, err = txn.Get(k2)
|
||
|
|
require.Equal(t, ErrKeyNotFound, err)
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
|
||
|
|
// When K3 is set, it should be persisted after a restart.
|
||
|
|
txnSet(t, kv, k3, v3, 0)
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
kv, err = Open(getTestOptions(dir))
|
||
|
|
require.NoError(t, err)
|
||
|
|
checkKeys(t, kv, [][]byte{k3})
|
||
|
|
|
||
|
|
// Replay value log from beginning, badger head is past k2.
|
||
|
|
kv.vlog.Replay(valuePointer{Fid: 0}, replayFunction(kv))
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestReadOnlyOpenWithPartialAppendToValueLog(t *testing.T) {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
|
||
|
|
// Create skeleton files.
|
||
|
|
opts := getTestOptions(dir)
|
||
|
|
opts.ValueLogFileSize = 100 * 1024 * 1024 // 100Mb
|
||
|
|
kv, err := Open(opts)
|
||
|
|
require.NoError(t, err)
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
|
||
|
|
var (
|
||
|
|
k0 = []byte("k0")
|
||
|
|
k1 = []byte("k1")
|
||
|
|
k2 = []byte("k2")
|
||
|
|
v0 = []byte("value0-012345678901234567890123")
|
||
|
|
v1 = []byte("value1-012345678901234567890123")
|
||
|
|
v2 = []byte("value2-012345678901234567890123")
|
||
|
|
)
|
||
|
|
|
||
|
|
// Create truncated vlog to simulate a partial append.
|
||
|
|
// k0 - single transaction, k1 and k2 in another transaction
|
||
|
|
buf := createVlog(t, []*Entry{
|
||
|
|
{Key: k0, Value: v0},
|
||
|
|
{Key: k1, Value: v1},
|
||
|
|
{Key: k2, Value: v2},
|
||
|
|
})
|
||
|
|
buf = buf[:len(buf)-6]
|
||
|
|
require.NoError(t, ioutil.WriteFile(vlogFilePath(dir, 0), buf, 0777))
|
||
|
|
|
||
|
|
opts.ReadOnly = true
|
||
|
|
// Badger should fail a read-only open with values to replay
|
||
|
|
kv, err = Open(opts)
|
||
|
|
require.Error(t, err)
|
||
|
|
require.Regexp(t, "Database was not properly closed, cannot open read-only|Read-only mode is not supported on Windows", err.Error())
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestValueLogTrigger(t *testing.T) {
|
||
|
|
t.Skip("Difficult to trigger compaction, so skipping. Re-enable after fixing #226")
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
|
||
|
|
opt := getTestOptions(dir)
|
||
|
|
opt.ValueLogFileSize = 1 << 20
|
||
|
|
kv, err := Open(opt)
|
||
|
|
require.NoError(t, err)
|
||
|
|
|
||
|
|
// Write a lot of data, so it creates some work for valug log GC.
|
||
|
|
sz := 32 << 10
|
||
|
|
txn := kv.NewTransaction(true)
|
||
|
|
for i := 0; i < 100; i++ {
|
||
|
|
v := make([]byte, sz)
|
||
|
|
rand.Read(v[:rand.Intn(sz)])
|
||
|
|
require.NoError(t, txn.Set([]byte(fmt.Sprintf("key%d", i)), v))
|
||
|
|
if i%20 == 0 {
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
txn = kv.NewTransaction(true)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
|
||
|
|
for i := 0; i < 45; i++ {
|
||
|
|
txnDelete(t, kv, []byte(fmt.Sprintf("key%d", i)))
|
||
|
|
}
|
||
|
|
|
||
|
|
require.NoError(t, kv.RunValueLogGC(0.5))
|
||
|
|
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
|
||
|
|
err = kv.RunValueLogGC(0.5)
|
||
|
|
require.Equal(t, ErrRejected, err, "Error should be returned after closing DB.")
|
||
|
|
}
|
||
|
|
|
||
|
|
func createVlog(t *testing.T, entries []*Entry) []byte {
|
||
|
|
dir, err := ioutil.TempDir("", "badger")
|
||
|
|
require.NoError(t, err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
|
||
|
|
opts := getTestOptions(dir)
|
||
|
|
opts.ValueLogFileSize = 100 * 1024 * 1024 // 100Mb
|
||
|
|
kv, err := Open(opts)
|
||
|
|
require.NoError(t, err)
|
||
|
|
txnSet(t, kv, entries[0].Key, entries[0].Value, entries[0].meta)
|
||
|
|
entries = entries[1:]
|
||
|
|
txn := kv.NewTransaction(true)
|
||
|
|
for _, entry := range entries {
|
||
|
|
require.NoError(t, txn.SetWithMeta(entry.Key, entry.Value, entry.meta))
|
||
|
|
}
|
||
|
|
require.NoError(t, txn.Commit(nil))
|
||
|
|
require.NoError(t, kv.Close())
|
||
|
|
|
||
|
|
filename := vlogFilePath(dir, 0)
|
||
|
|
buf, err := ioutil.ReadFile(filename)
|
||
|
|
require.NoError(t, err)
|
||
|
|
return buf
|
||
|
|
}
|
||
|
|
|
||
|
|
func checkKeys(t *testing.T, kv *DB, keys [][]byte) {
|
||
|
|
i := 0
|
||
|
|
txn := kv.NewTransaction(false)
|
||
|
|
iter := txn.NewIterator(IteratorOptions{})
|
||
|
|
for iter.Seek(keys[0]); iter.Valid(); iter.Next() {
|
||
|
|
require.Equal(t, iter.Item().Key(), keys[i])
|
||
|
|
i++
|
||
|
|
}
|
||
|
|
require.Equal(t, i, len(keys))
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkReadWrite(b *testing.B) {
|
||
|
|
rwRatio := []float32{
|
||
|
|
0.1, 0.2, 0.5, 1.0,
|
||
|
|
}
|
||
|
|
valueSize := []int{
|
||
|
|
64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384,
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, vsz := range valueSize {
|
||
|
|
for _, rw := range rwRatio {
|
||
|
|
b.Run(fmt.Sprintf("%3.1f,%04d", rw, vsz), func(b *testing.B) {
|
||
|
|
var vl valueLog
|
||
|
|
dir, err := ioutil.TempDir("", "vlog")
|
||
|
|
y.Check(err)
|
||
|
|
defer os.RemoveAll(dir)
|
||
|
|
err = vl.Open(nil, getTestOptions(dir))
|
||
|
|
y.Check(err)
|
||
|
|
defer vl.Close()
|
||
|
|
b.ResetTimer()
|
||
|
|
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
e := new(Entry)
|
||
|
|
e.Key = make([]byte, 16)
|
||
|
|
e.Value = make([]byte, vsz)
|
||
|
|
bl := new(request)
|
||
|
|
bl.Entries = []*Entry{e}
|
||
|
|
|
||
|
|
var ptrs []valuePointer
|
||
|
|
|
||
|
|
vl.write([]*request{bl})
|
||
|
|
ptrs = append(ptrs, bl.Ptrs...)
|
||
|
|
|
||
|
|
f := rand.Float32()
|
||
|
|
if f < rw {
|
||
|
|
vl.write([]*request{bl})
|
||
|
|
|
||
|
|
} else {
|
||
|
|
ln := len(ptrs)
|
||
|
|
if ln == 0 {
|
||
|
|
b.Fatalf("Zero length of ptrs")
|
||
|
|
}
|
||
|
|
idx := rand.Intn(ln)
|
||
|
|
s := new(y.Slice)
|
||
|
|
buf, cb, err := vl.readValueBytes(ptrs[idx], s)
|
||
|
|
if err != nil {
|
||
|
|
b.Fatalf("Benchmark Read: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
e := valueBytesToEntry(buf)
|
||
|
|
if len(e.Key) != 16 {
|
||
|
|
b.Fatalf("Key is invalid")
|
||
|
|
}
|
||
|
|
if len(e.Value) != vsz {
|
||
|
|
b.Fatalf("Value is invalid")
|
||
|
|
}
|
||
|
|
cb()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|