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public Enumerate ( ) : byte[]>>.IEnumerable |
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| Résultat | byte[]>>.IEnumerable | |
public void LargeDataEnumerateTest()
{
string path = Path.GetFullPath("TestData\\LargeDataEnumerateTest");
int totalSize = 0;
int num_items = 500;
var timer = new Stopwatch();
using (var db = new KeyValueStore(path)) {
db.Truncate();
// Generate a data value that is larger than the block size.
var value = ByteArray.Random(Config.SortedBlockSize + 256);
// Do it enough times to ensure a roll-over
for (int i = 0; i < num_items; i++) {
var key = BitConverter.GetBytes(i).Reverse().ToArray(); // this has to be little endian to sort in an obvious way
db.Set(key, value.InternalBytes);
totalSize += value.InternalBytes.Length;
}
int j=0;
timer.Start();
foreach (var pair in db.Enumerate()) {
var key = BitConverter.GetBytes(j).Reverse().ToArray();
Assert.AreEqual(key, pair.Key);
Assert.AreEqual(value.InternalBytes, pair.Value);
j++;
}
timer.Stop();
Console.WriteLine("Randomized read throughput of {0} MB/s (avg {1} ms per lookup)", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0), (double)timer.Elapsed.TotalSeconds / (double)num_items);
}
}
public void CleanIndex(string indexName)
{
KeyValueStore indexStore = GetSecondaryIndex(indexName);
var allValueStoreItems = new HashSet <ByteArray>(this.Enumerate().Select(item => new ByteArray(item.Key)));
foreach (var indexItem in indexStore.Enumerate())
{
byte[] itemKey = KeyValueStore.ItemKeyFromIndex(indexItem);
if (!allValueStoreItems.Contains(new ByteArray(itemKey)))
{
indexStore.Delete(indexItem.Key);
}
}
}
public void CrashTestBeforeMerge()
{
string path = Path.GetFullPath("TestData\\CrashTestBeforeMerge");
using (var db = new KeyValueStore(path)) {
db.Truncate();
}
var doneSetting = new EventWaitHandle(false, EventResetMode.ManualReset, "CrashTestBeforeMerge");
doneSetting.Reset();
string testPath = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase), "RazorTest.exe");
var process = Process.Start(testPath, "CrashTestBeforeMerge");
doneSetting.WaitOne(30000);
process.Refresh();
if (!process.HasExited) {
try { process.Kill(); } catch { }
process.WaitForExit();
}
// Open the database created by the other program
using (var db = new KeyValueStore(path)) {
db.Manifest.Logger = (msg) => Console.WriteLine(msg);
Console.WriteLine("Begin enumeration.");
ByteArray lastKey = new ByteArray();
int ct = 0;
foreach (var pair in db.Enumerate()) {
ByteArray k = new ByteArray(pair.Key);
Assert.True(lastKey.CompareTo(k) < 0);
lastKey = k;
ct++;
}
Assert.AreEqual(10000, ct);
Console.WriteLine("Found {0} items in the crashed database.", ct);
}
}
public int CountIndex(string indexName)
{
KeyValueStore indexStore = GetSecondaryIndex(indexName);
return(indexStore.Enumerate().Count());
}
public void DumpKeySpaceUsed()
{
double valueBytes=0L;
double keyBytes = 0L;
double dupBytes = 0L;
double totalRecords = 0L;
Action<string> dumpFolderBytes = (folder) => {
double tableValBytes = 0L;
double tableKeyBytes = 0L;
double tableDupBytes = 0L;
double tableRecords = 0L;
byte[] lastkey = null;
using (var kvs = new KeyValueStore(folder)) {
foreach (var pair in kvs.Enumerate()) {
tableRecords++;
tableValBytes += pair.Value.Length;
tableKeyBytes += pair.Key.Length;
if (lastkey != null) {
int i = 0;
for (i = 0; i < lastkey.Length && i < pair.Key.Length; i++)
if (lastkey[i] != pair.Key[i])
continue;
tableDupBytes += i;
}
lastkey = pair.Key;
}
}
valueBytes += tableValBytes;
keyBytes += tableKeyBytes;
dupBytes += tableDupBytes;
totalRecords += tableRecords;
Console.WriteLine("{0} Total Bytes: {1}", folder, tableValBytes + tableKeyBytes);
Console.WriteLine(" #Records: {0}", tableRecords);
Console.WriteLine(" Key Bytes: {0}", tableKeyBytes);
Console.WriteLine(" Value Bytes: {0}", tableValBytes);
Console.WriteLine(" Dupl. Bytes: {0}", tableDupBytes);
Console.WriteLine(" %Savings in keys: {0}%", tableDupBytes / tableKeyBytes * 100);
Console.WriteLine(" %Savings overall: {0}%", tableDupBytes / (tableValBytes + tableKeyBytes) * 100);
Console.WriteLine();
};
var baseFolder = @"d:\ncoverdata\ncover";
foreach (var folder in Directory.GetDirectories(baseFolder, "*", SearchOption.AllDirectories))
dumpFolderBytes(folder);
Console.WriteLine("Total KeyValueStore Bytes: {0}", valueBytes + keyBytes);
Console.WriteLine(" #Records: {0}", totalRecords);
Console.WriteLine(" Key Bytes: {0}", keyBytes);
Console.WriteLine(" Value Bytes: {0}", valueBytes);
Console.WriteLine(" Dupl. Bytes: {0}", dupBytes);
Console.WriteLine(" %Savings in keys: {0}%", dupBytes / keyBytes * 100);
Console.WriteLine(" %Savings overall: {0}%", dupBytes / (valueBytes + keyBytes) * 100);
}
public void BulkSetEnumerateAllWithMissingSBT_ThrowAll()
{
string path = Path.GetFullPath("TestData\\BulkSetEnumerateAllWithMissingSBT_ThrowAll"+DateTime.Now.Ticks.ToString());
var timer = new Stopwatch();
int totalSize = 0;
int readSize = 0;
Action<string> logger = (msg) => { Console.WriteLine(msg); };
using (var db = new KeyValueStore(path)) {
db.Truncate();
timer.Start();
for (int i = 0; i < 500000; i++) {
var randomKey = BitConverter.GetBytes(i);
var randomValue = BitConverter.GetBytes(i);
db.Set(randomKey, randomValue);
readSize += randomKey.Length + randomValue.Length;
totalSize += randomKey.Length + randomValue.Length;
}
timer.Stop();
Console.WriteLine("Wrote sorted table at a throughput of {0} MB/s", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
}
// delete the sbt files
var files = Directory.GetFiles(path, "*.sbt");
foreach(var fname in files)
File.Delete(fname);
// Close and re-open the database to force all the sstable merging to complete.
Console.WriteLine("Begin enumeration.");
RazorDB.Config.ExceptionHandling = ExceptionHandling.ThrowAll;
Assert.Throws(typeof(FileNotFoundException), () => {
using (var db = new KeyValueStore(path)) {
foreach (var pair in db.Enumerate());
}
});
}
public void BulkSetEnumerateAllWithMissingSBT_AttemptRecovery()
{
try {
RazorDB.Config.ExceptionHandling = ExceptionHandling.AttemptRecovery;
string path = Path.GetFullPath("TestData\\BulkSetEnumerateAllWithMissingSBT_AttemptRecovery");
var timer = new Stopwatch();
int totalSize = 0;
int readSize = 0;
Action<string> logger = (msg) => { Console.WriteLine(msg); };
using (var db = new KeyValueStore(path)) {
db.Truncate();
timer.Start();
for (int i = 0; i < 500000; i++) {
var randomKey = BitConverter.GetBytes(i);
var randomValue = BitConverter.GetBytes(i);
db.Set(randomKey, randomValue);
readSize += randomKey.Length + randomValue.Length;
totalSize += randomKey.Length + randomValue.Length;
}
timer.Stop();
Console.WriteLine("Wrote sorted table at a throughput of {0} MB/s", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
}
// delete the sbt files
var files = Directory.GetFiles(path, "*.sbt");
foreach (var fname in files)
File.Delete(fname);
// Close and re-open the database to force all the sstable merging to complete.
Console.WriteLine("Begin enumeration.");
using (var db = new KeyValueStore(path)) {
timer.Reset();
timer.Start();
ByteArray lastKey = ByteArray.Empty;
int ct = 0;
foreach (var pair in db.Enumerate()) {
try {
ByteArray k = new ByteArray(pair.Key);
ByteArray v = new ByteArray(pair.Value);
Assert.AreEqual(k, v);
Assert.True(lastKey.CompareTo(k) < 0);
lastKey = k;
ct++;
} catch (Exception /*e*/) {
//Console.WriteLine("Key: {0}\n{1}",insertedItem.Key,e);
//Debugger.Launch();
//db.Get(insertedItem.Key.InternalBytes);
//db.Manifest.LogContents();
throw;
}
}
timer.Stop();
Assert.AreEqual(80568, ct);
Console.WriteLine("Enumerated read throughput of {0} MB/s (avg {1} ms per 1000 items)", (double)readSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0), (double)timer.Elapsed.TotalSeconds / (double)105);
}
// add some more records after deleting files
using (var db = new KeyValueStore(path)) {
timer.Start();
// add 1,000,000 new keys
for (int i = 1000000; i < 3000000; i++) {
var randomKey = BitConverter.GetBytes(i);
var randomValue = BitConverter.GetBytes(i);
db.Set(randomKey, randomValue);
readSize += randomKey.Length + randomValue.Length;
totalSize += randomKey.Length + randomValue.Length;
}
timer.Stop();
Console.WriteLine("Wrote sorted table at a throughput of {0} MB/s", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
}
// Close and re-open the database to force all the sstable merging to complete.
Console.WriteLine("Begin enumeration.");
using (var db = new KeyValueStore(path)) {
timer.Reset();
timer.Start();
ByteArray lastKey = ByteArray.Empty;
int ct = 0;
foreach (var pair in db.Enumerate()) {
try {
ByteArray k = new ByteArray(pair.Key);
ByteArray v = new ByteArray(pair.Value);
Assert.AreEqual(k, v);
Assert.True(lastKey.CompareTo(k) < 0);
lastKey = k;
ct++;
} catch (Exception /*e*/) {
//Console.WriteLine("Key: {0}\n{1}",insertedItem.Key,e);
//Debugger.Launch();
//db.Get(insertedItem.Key.InternalBytes);
//db.Manifest.LogContents();
throw;
}
}
timer.Stop();
Assert.AreEqual(2080568, ct);
Console.WriteLine("Enumerated read throughput of {0} MB/s (avg {1} ms per 1000 items)", (double)readSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0), (double)timer.Elapsed.TotalSeconds / (double)105);
}
} finally {
RazorDB.Config.ExceptionHandling = ExceptionHandling.ThrowAll;
}
}
public void BulkSetEnumerateAll2()
{
string path = Path.GetFullPath("TestData\\BulkSetEnumerateAll2");
var timer = new Stopwatch();
int totalSize = 0;
int readSize = 0;
using (var db = new KeyValueStore(path)) {
db.Truncate();
db.Manifest.Logger = (msg) => Console.WriteLine(msg);
timer.Start();
for (int i = 0; i < 105000; i++) {
var randomKey = BitConverter.GetBytes(i);
var randomValue = BitConverter.GetBytes(i);
db.Set(randomKey, randomValue);
readSize += randomKey.Length + randomValue.Length;
totalSize += randomKey.Length + randomValue.Length;
}
timer.Stop();
Console.WriteLine("Wrote sorted table at a throughput of {0} MB/s", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
timer.Reset();
Console.WriteLine("Begin enumeration.");
timer.Start();
ByteArray lastKey = ByteArray.Empty;
int ct = 0;
foreach (var pair in db.Enumerate()) {
try {
ByteArray k = new ByteArray(pair.Key);
ByteArray v = new ByteArray(pair.Value);
Assert.AreEqual(k, v);
Assert.True(lastKey.CompareTo(k) < 0);
lastKey = k;
ct++;
} catch (Exception /*e*/) {
//Console.WriteLine("Key: {0}\n{1}",insertedItem.Key,e);
//Debugger.Launch();
//db.Get(insertedItem.Key.InternalBytes);
//db.Manifest.LogContents();
throw;
}
}
timer.Stop();
Assert.AreEqual(105000, ct, "105000 items should be enumerated.");
Console.WriteLine("Enumerated read throughput of {0} MB/s (avg {1} ms per 1000 items)", (double)readSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0), (double)timer.Elapsed.TotalSeconds / (double)105);
}
}
public void BulkSetBulkEnumerateWithCache()
{
string path = Path.GetFullPath("TestData\\BulkSetBulkEnumerateWithCache");
var timer = new Stopwatch();
int totalSize = 0;
int readSize = 0;
int num_items = 100000;
using (var db = new KeyValueStore(path)) {
db.Truncate();
db.Manifest.Logger = (msg) => Console.WriteLine(msg);
timer.Start();
for (int i = 0; i < num_items; i++) {
var randomKey = ByteArray.Random(40);
var randomValue = ByteArray.Random(256);
db.Set(randomKey.InternalBytes, randomValue.InternalBytes);
readSize += randomKey.Length + randomValue.Length;
totalSize += randomKey.Length + randomValue.Length;
}
timer.Stop();
Console.WriteLine("Wrote sorted table at a throughput of {0} MB/s", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
timer.Reset();
timer.Start();
Assert.AreEqual(num_items, db.Enumerate().Count());
timer.Stop();
Console.WriteLine("Enumerated read throughput of {0} MB/s", (double)readSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
timer.Reset();
timer.Start();
Assert.AreEqual(num_items, db.Enumerate().Count());
timer.Stop();
Console.WriteLine("Enumerated (second pass) read throughput of {0} MB/s", (double)readSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
}
}
public void BulkSetBulkEnumerateWhileMerging()
{
string path = Path.GetFullPath("TestData\\BulkSetBulkEnumerateWhileMerging");
var timer = new Stopwatch();
int totalSize = 0;
int readSize = 0;
int num_items = 100000;
using (var db = new KeyValueStore(path)) {
db.Truncate();
db.Manifest.Logger = (msg) => Console.WriteLine(msg);
timer.Start();
for (int i = 0; i < num_items; i++) {
var randomKey = ByteArray.Random(40);
var randomValue = ByteArray.Random(256);
db.Set(randomKey.InternalBytes, randomValue.InternalBytes);
readSize += randomKey.Length + randomValue.Length;
totalSize += randomKey.Length + randomValue.Length;
}
timer.Stop();
Console.WriteLine("Wrote sorted table at a throughput of {0} MB/s", (double)totalSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
timer.Reset();
Console.WriteLine("Begin enumeration.");
timer.Start();
ByteArray lastKey = new ByteArray();
int ct = 0;
foreach (var pair in db.Enumerate()) {
try {
ByteArray k = new ByteArray(pair.Key);
Assert.True(lastKey.CompareTo(k) < 0);
lastKey = k;
ct++;
} catch (Exception e) {
Console.WriteLine("Key: {0}\n{1}",pair.Key,e);
Debugger.Launch();
throw;
}
}
timer.Stop();
Assert.AreEqual(num_items, ct, num_items.ToString() + " items should be enumerated.");
Console.WriteLine("Enumerated read throughput of {0} MB/s", (double)readSize / timer.Elapsed.TotalSeconds / (1024.0 * 1024.0));
}
}
public void TestJournalFileGrowth()
{
string path = Path.GetFullPath("TestData\\TestJournalFileGrowth");
// Open database and store enough data to cause a page split
using (var db = new KeyValueStore(path)) {
db.Truncate();
ByteArray key = ByteArray.Random(40);
for (int i = 0; i < 100000; i++) {
ByteArray value = ByteArray.Random(400);
db.Set(key.InternalBytes, value.InternalBytes);
}
var journalfileName = Config.JournalFile(db.Manifest.BaseFileName, db.Manifest.CurrentVersion(0));
var journalLength = new FileInfo(journalfileName).Length;
// Make sure the journal is smaller than the max memtable size.
Assert.LessOrEqual(journalLength, Config.MaxMemTableSize);
// Double check to be sure that the contents of the database are correct in this case.
int count = 0;
foreach (var value in db.Enumerate()) {
Assert.AreEqual(key.InternalBytes, value.Key);
count++;
}
Assert.AreEqual(1, count);
}
}
public void V1ReadLargeObjectsFromDatastore()
{
using (var db = new KeyValueStore(@"..\FormatTestData\V1LargeObjectStore")) {
foreach (var pair in db.Enumerate()) {
Assert.AreEqual(40, pair.Key.Length);
Assert.AreEqual(Config.MaxSmallValueSize * 100, pair.Value.Length);
}
}
}
public void IndexClean()
{
string path = Path.GetFullPath("TestData\\IndexClean");
using (var db = new KeyValueStore(path)) {
db.Truncate();
db.Manifest.Logger = msg => Console.WriteLine(msg);
db.Set(Encoding.UTF8.GetBytes("KeyA"), Encoding.UTF8.GetBytes("ValueA:1"), new Dictionary<string, byte[]> { { "Idx", Encoding.UTF8.GetBytes("1") } });
db.Set(Encoding.UTF8.GetBytes("KeyB"), Encoding.UTF8.GetBytes("ValueB:2"), new Dictionary<string, byte[]> { { "Idx", Encoding.UTF8.GetBytes("2") } });
db.Set(Encoding.UTF8.GetBytes("KeyC"), Encoding.UTF8.GetBytes("ValueC:3"), new Dictionary<string, byte[]> { { "Idx", Encoding.UTF8.GetBytes("3") } });
var lookupValue = db.Find("Idx", Encoding.UTF8.GetBytes("3")).Single();
Assert.AreEqual("ValueC:3", Encoding.UTF8.GetString(lookupValue.Value));
Assert.AreEqual("KeyC", Encoding.UTF8.GetString(lookupValue.Key));
db.Delete(Encoding.UTF8.GetBytes("KeyC"));
}
// Open the index directly and confirm that the lookup key is still there
using (var db = new KeyValueStore(Path.Combine(path, "Idx"))) {
Assert.AreEqual(3, db.Enumerate().Count());
}
using (var db = new KeyValueStore(path)) {
db.CleanIndex("Idx");
}
// Open the index directly and confirm that the lookup key is now gone
using (var db = new KeyValueStore(Path.Combine(path, "Idx"))) {
Assert.AreEqual(2, db.Enumerate().Count());
}
}