use of org.rocksdb.SkipListMemTableConfig in project Lealone-Plugins by lealone.
the class RocksDBTest method testRocksDB.
// 以下代码只用于学习RocksDB的用法
// 来源: https://github.com/facebook/rocksdb/blob/master/java/samples/src/main/java/RocksDBSample.java
//
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
//
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
public static void testRocksDB() {
final String db_path = TEST_DIR + File.separatorChar + "rocksdb";
final String db_path_not_found = db_path + "_not_found";
System.out.println("RocksDBSample");
try (final Options options = new Options();
final Filter bloomFilter = new BloomFilter(10);
final ReadOptions readOptions = new ReadOptions().setFillCache(false);
final Statistics stats = new Statistics();
final RateLimiter rateLimiter = new RateLimiter(10000000, 10000, 10)) {
try (final RocksDB db = RocksDB.open(options, db_path_not_found)) {
assert (false);
} catch (final RocksDBException e) {
System.out.format("Caught the expected exception -- %s\n", e);
}
try {
options.setCreateIfMissing(true).setStatistics(stats).setWriteBufferSize(8 * SizeUnit.KB).setMaxWriteBufferNumber(3).setMaxBackgroundCompactions(10).setCompressionType(CompressionType.SNAPPY_COMPRESSION).setCompactionStyle(CompactionStyle.UNIVERSAL);
} catch (final IllegalArgumentException e) {
assert (false);
}
assert (options.createIfMissing() == true);
assert (options.writeBufferSize() == 8 * SizeUnit.KB);
assert (options.maxWriteBufferNumber() == 3);
assert (options.maxBackgroundCompactions() == 10);
assert (options.compressionType() == CompressionType.SNAPPY_COMPRESSION);
assert (options.compactionStyle() == CompactionStyle.UNIVERSAL);
assert (options.memTableFactoryName().equals("SkipListFactory"));
options.setMemTableConfig(new HashSkipListMemTableConfig().setHeight(4).setBranchingFactor(4).setBucketCount(2000000));
assert (options.memTableFactoryName().equals("HashSkipListRepFactory"));
options.setMemTableConfig(new HashLinkedListMemTableConfig().setBucketCount(100000));
assert (options.memTableFactoryName().equals("HashLinkedListRepFactory"));
options.setMemTableConfig(new VectorMemTableConfig().setReservedSize(10000));
assert (options.memTableFactoryName().equals("VectorRepFactory"));
options.setMemTableConfig(new SkipListMemTableConfig());
assert (options.memTableFactoryName().equals("SkipListFactory"));
options.setTableFormatConfig(new PlainTableConfig());
// Plain-Table requires mmap read
options.setAllowMmapReads(true);
assert (options.tableFactoryName().equals("PlainTable"));
options.setRateLimiter(rateLimiter);
final BlockBasedTableConfig table_options = new BlockBasedTableConfig();
table_options.setBlockCacheSize(64 * SizeUnit.KB).setFilter(bloomFilter).setCacheNumShardBits(6).setBlockSizeDeviation(5).setBlockRestartInterval(10).setCacheIndexAndFilterBlocks(true).setHashIndexAllowCollision(false).setBlockCacheCompressedSize(64 * SizeUnit.KB).setBlockCacheCompressedNumShardBits(10);
assert (table_options.blockCacheSize() == 64 * SizeUnit.KB);
assert (table_options.cacheNumShardBits() == 6);
assert (table_options.blockSizeDeviation() == 5);
assert (table_options.blockRestartInterval() == 10);
assert (table_options.cacheIndexAndFilterBlocks() == true);
assert (table_options.hashIndexAllowCollision() == false);
assert (table_options.blockCacheCompressedSize() == 64 * SizeUnit.KB);
assert (table_options.blockCacheCompressedNumShardBits() == 10);
options.setTableFormatConfig(table_options);
assert (options.tableFactoryName().equals("BlockBasedTable"));
try (final RocksDB db = RocksDB.open(options, db_path)) {
db.put("hello".getBytes(), "world".getBytes());
final byte[] value = db.get("hello".getBytes());
assert ("world".equals(new String(value)));
final String str = db.getProperty("rocksdb.stats");
assert (str != null && !str.equals(""));
} catch (final RocksDBException e) {
System.out.format("[ERROR] caught the unexpected exception -- %s\n", e);
assert (false);
}
try (final RocksDB db = RocksDB.open(options, db_path)) {
db.put("hello".getBytes(), "world".getBytes());
byte[] value = db.get("hello".getBytes());
System.out.format("Get('hello') = %s\n", new String(value));
for (int i = 1; i <= 9; ++i) {
for (int j = 1; j <= 9; ++j) {
db.put(String.format("%dx%d", i, j).getBytes(), String.format("%d", i * j).getBytes());
}
}
for (int i = 1; i <= 9; ++i) {
for (int j = 1; j <= 9; ++j) {
System.out.format("%s ", new String(db.get(String.format("%dx%d", i, j).getBytes())));
}
System.out.println("");
}
// write batch test
try (final WriteOptions writeOpt = new WriteOptions()) {
for (int i = 10; i <= 19; ++i) {
try (final WriteBatch batch = new WriteBatch()) {
for (int j = 10; j <= 19; ++j) {
batch.put(String.format("%dx%d", i, j).getBytes(), String.format("%d", i * j).getBytes());
}
db.write(writeOpt, batch);
}
}
}
for (int i = 10; i <= 19; ++i) {
for (int j = 10; j <= 19; ++j) {
assert (new String(db.get(String.format("%dx%d", i, j).getBytes())).equals(String.format("%d", i * j)));
System.out.format("%s ", new String(db.get(String.format("%dx%d", i, j).getBytes())));
}
System.out.println("");
}
value = db.get("1x1".getBytes());
assert (value != null);
value = db.get("world".getBytes());
assert (value == null);
value = db.get(readOptions, "world".getBytes());
assert (value == null);
final byte[] testKey = "asdf".getBytes();
final byte[] testValue = "asdfghjkl;'?><MNBVCXZQWERTYUIOP{+_)(*&^%$#@".getBytes();
db.put(testKey, testValue);
byte[] testResult = db.get(testKey);
assert (testResult != null);
assert (Arrays.equals(testValue, testResult));
assert (new String(testValue).equals(new String(testResult)));
testResult = db.get(readOptions, testKey);
assert (testResult != null);
assert (Arrays.equals(testValue, testResult));
assert (new String(testValue).equals(new String(testResult)));
final byte[] insufficientArray = new byte[10];
final byte[] enoughArray = new byte[50];
int len;
len = db.get(testKey, insufficientArray);
assert (len > insufficientArray.length);
len = db.get("asdfjkl;".getBytes(), enoughArray);
assert (len == RocksDB.NOT_FOUND);
len = db.get(testKey, enoughArray);
assert (len == testValue.length);
len = db.get(readOptions, testKey, insufficientArray);
assert (len > insufficientArray.length);
len = db.get(readOptions, "asdfjkl;".getBytes(), enoughArray);
assert (len == RocksDB.NOT_FOUND);
len = db.get(readOptions, testKey, enoughArray);
assert (len == testValue.length);
db.delete(testKey);
len = db.get(testKey, enoughArray);
assert (len == RocksDB.NOT_FOUND);
// repeat the test with WriteOptions
try (final WriteOptions writeOpts = new WriteOptions()) {
writeOpts.setSync(true);
writeOpts.setDisableWAL(true);
db.put(writeOpts, testKey, testValue);
len = db.get(testKey, enoughArray);
assert (len == testValue.length);
assert (new String(testValue).equals(new String(enoughArray, 0, len)));
}
try {
for (final TickerType statsType : TickerType.values()) {
if (statsType != TickerType.TICKER_ENUM_MAX) {
stats.getTickerCount(statsType);
}
}
System.out.println("getTickerCount() passed.");
} catch (final Exception e) {
System.out.println("Failed in call to getTickerCount()");
// Should never reach here.
assert (false);
}
try {
for (final HistogramType histogramType : HistogramType.values()) {
if (histogramType != HistogramType.HISTOGRAM_ENUM_MAX) {
stats.getHistogramData(histogramType);
}
}
System.out.println("getHistogramData() passed.");
} catch (final Exception e) {
System.out.println("Failed in call to getHistogramData()");
// Should never reach here.
assert (false);
}
try (final RocksIterator iterator = db.newIterator()) {
boolean seekToFirstPassed = false;
for (iterator.seekToFirst(); iterator.isValid(); iterator.next()) {
iterator.status();
assert (iterator.key() != null);
assert (iterator.value() != null);
seekToFirstPassed = true;
}
if (seekToFirstPassed) {
System.out.println("iterator seekToFirst tests passed.");
}
boolean seekToLastPassed = false;
for (iterator.seekToLast(); iterator.isValid(); iterator.prev()) {
iterator.status();
assert (iterator.key() != null);
assert (iterator.value() != null);
seekToLastPassed = true;
}
if (seekToLastPassed) {
System.out.println("iterator seekToLastPassed tests passed.");
}
iterator.seekToFirst();
iterator.seek(iterator.key());
assert (iterator.key() != null);
assert (iterator.value() != null);
System.out.println("iterator seek test passed.");
}
System.out.println("iterator tests passed.");
final List<byte[]> keys = new ArrayList<>();
try (final RocksIterator iterator = db.newIterator()) {
for (iterator.seekToLast(); iterator.isValid(); iterator.prev()) {
keys.add(iterator.key());
}
}
Map<byte[], byte[]> values = db.multiGet(keys);
assert (values.size() == keys.size());
for (final byte[] value1 : values.values()) {
assert (value1 != null);
}
values = db.multiGet(new ReadOptions(), keys);
assert (values.size() == keys.size());
for (final byte[] value1 : values.values()) {
assert (value1 != null);
}
} catch (final RocksDBException e) {
System.err.println(e);
}
}
}
use of org.rocksdb.SkipListMemTableConfig in project mercury by yellow013.
the class RocksDBSample method main.
@SuppressWarnings("deprecation")
public static void main(final String[] args) {
// if (args.length < 1) {
// System.out.println("usage: RocksDBSample db_path");
// System.exit(-1);
// }
// args[0];
final String db_path = dbPath;
final String db_path_not_found = db_path + "_not_found";
System.out.println("RocksDBSample");
try (final Options options = new Options();
final Filter bloomFilter = new BloomFilter(10);
final ReadOptions readOptions = new ReadOptions().setFillCache(false);
final Statistics stats = new Statistics();
final RateLimiter rateLimiter = new RateLimiter(10000000, 10000, 10)) {
try (final RocksDB db = RocksDB.open(options, db_path_not_found)) {
assert (false);
} catch (final RocksDBException e) {
System.out.format("Caught the expected exception -- %s\n", e);
}
try {
options.setCreateIfMissing(true).setStatistics(stats).setWriteBufferSize(8 * SizeUnit.KB).setMaxWriteBufferNumber(3).setMaxBackgroundCompactions(10).setCompressionType(CompressionType.SNAPPY_COMPRESSION).setCompactionStyle(CompactionStyle.UNIVERSAL);
} catch (final IllegalArgumentException e) {
assert (false);
}
assert (options.createIfMissing() == true);
assert (options.writeBufferSize() == 8 * SizeUnit.KB);
assert (options.maxWriteBufferNumber() == 3);
assert (options.maxBackgroundCompactions() == 10);
assert (options.compressionType() == CompressionType.SNAPPY_COMPRESSION);
assert (options.compactionStyle() == CompactionStyle.UNIVERSAL);
assert (options.memTableFactoryName().equals("SkipListFactory"));
options.setMemTableConfig(new HashSkipListMemTableConfig().setHeight(4).setBranchingFactor(4).setBucketCount(2000000));
assert (options.memTableFactoryName().equals("HashSkipListRepFactory"));
options.setMemTableConfig(new HashLinkedListMemTableConfig().setBucketCount(100000));
assert (options.memTableFactoryName().equals("HashLinkedListRepFactory"));
options.setMemTableConfig(new VectorMemTableConfig().setReservedSize(10000));
assert (options.memTableFactoryName().equals("VectorRepFactory"));
options.setMemTableConfig(new SkipListMemTableConfig());
assert (options.memTableFactoryName().equals("SkipListFactory"));
options.setTableFormatConfig(new PlainTableConfig());
// Plain-Table requires mmap read
options.setAllowMmapReads(true);
assert (options.tableFactoryName().equals("PlainTable"));
options.setRateLimiter(rateLimiter);
final BlockBasedTableConfig table_options = new BlockBasedTableConfig();
table_options.setBlockCache(new LRUCache(512)).setFilterPolicy(bloomFilter).setBlockSizeDeviation(5).setBlockRestartInterval(10).setCacheIndexAndFilterBlocks(true).setBlockCacheCompressed(new LRUCache(512));
// assert (table_options.cacheNumShardBits() == 6);
assert (table_options.blockSizeDeviation() == 5);
assert (table_options.blockRestartInterval() == 10);
assert (table_options.cacheIndexAndFilterBlocks() == true);
// assert (table_options.blockCacheCompressedSize() == 64 * SizeUnit.KB);
// assert (table_options.blockCacheCompressedNumShardBits() == 10);
options.setTableFormatConfig(table_options);
assert (options.tableFactoryName().equals("BlockBasedTable"));
try (final RocksDB db = RocksDB.open(options, db_path)) {
db.put("hello".getBytes(), "world".getBytes());
final byte[] value = db.get("hello".getBytes());
assert ("world".equals(new String(value)));
final String str = db.getProperty("rocksdb.stats");
assert (str != null && !str.equals(""));
} catch (final RocksDBException e) {
System.out.format("[ERROR] caught the unexpected exception -- %s\n", e);
assert (false);
}
try (final RocksDB db = RocksDB.open(options, db_path)) {
db.put("hello".getBytes(), "world".getBytes());
byte[] value = db.get("hello".getBytes());
System.out.format("Get('hello') = %s\n", new String(value));
for (int i = 1; i <= 9; ++i) {
for (int j = 1; j <= 9; ++j) {
db.put(String.format("%dx%d", i, j).getBytes(), String.format("%d", i * j).getBytes());
}
}
for (int i = 1; i <= 9; ++i) {
for (int j = 1; j <= 9; ++j) {
System.out.format("%s ", new String(db.get(String.format("%dx%d", i, j).getBytes())));
}
System.out.println("");
}
// write batch test
try (final WriteOptions writeOpt = new WriteOptions()) {
for (int i = 10; i <= 19; ++i) {
try (final WriteBatch batch = new WriteBatch()) {
for (int j = 10; j <= 19; ++j) {
batch.put(String.format("%dx%d", i, j).getBytes(), String.format("%d", i * j).getBytes());
}
db.write(writeOpt, batch);
}
}
}
for (int i = 10; i <= 19; ++i) {
for (int j = 10; j <= 19; ++j) {
assert (new String(db.get(String.format("%dx%d", i, j).getBytes())).equals(String.format("%d", i * j)));
System.out.format("%s ", new String(db.get(String.format("%dx%d", i, j).getBytes())));
}
System.out.println("");
}
value = db.get("1x1".getBytes());
assert (value != null);
value = db.get("world".getBytes());
assert (value == null);
value = db.get(readOptions, "world".getBytes());
assert (value == null);
final byte[] testKey = "asdf".getBytes();
final byte[] testValue = "asdfghjkl;'?><MNBVCXZQWERTYUIOP{+_)(*&^%$#@".getBytes();
db.put(testKey, testValue);
byte[] testResult = db.get(testKey);
assert (testResult != null);
assert (Arrays.equals(testValue, testResult));
assert (new String(testValue).equals(new String(testResult)));
testResult = db.get(readOptions, testKey);
assert (testResult != null);
assert (Arrays.equals(testValue, testResult));
assert (new String(testValue).equals(new String(testResult)));
final byte[] insufficientArray = new byte[10];
final byte[] enoughArray = new byte[50];
int len;
len = db.get(testKey, insufficientArray);
assert (len > insufficientArray.length);
len = db.get("asdfjkl;".getBytes(), enoughArray);
assert (len == RocksDB.NOT_FOUND);
len = db.get(testKey, enoughArray);
assert (len == testValue.length);
len = db.get(readOptions, testKey, insufficientArray);
assert (len > insufficientArray.length);
len = db.get(readOptions, "asdfjkl;".getBytes(), enoughArray);
assert (len == RocksDB.NOT_FOUND);
len = db.get(readOptions, testKey, enoughArray);
assert (len == testValue.length);
db.delete(testKey);
len = db.get(testKey, enoughArray);
assert (len == RocksDB.NOT_FOUND);
// repeat the test with WriteOptions
try (final WriteOptions writeOpts = new WriteOptions()) {
writeOpts.setSync(true);
writeOpts.setDisableWAL(true);
db.put(writeOpts, testKey, testValue);
len = db.get(testKey, enoughArray);
assert (len == testValue.length);
assert (new String(testValue).equals(new String(enoughArray, 0, len)));
}
try {
for (final TickerType statsType : TickerType.values()) {
if (statsType != TickerType.TICKER_ENUM_MAX) {
stats.getTickerCount(statsType);
}
}
System.out.println("getTickerCount() passed.");
} catch (final Exception e) {
System.out.println("Failed in call to getTickerCount()");
// Should never reach here.
assert (false);
}
try {
for (final HistogramType histogramType : HistogramType.values()) {
if (histogramType != HistogramType.HISTOGRAM_ENUM_MAX) {
@SuppressWarnings("unused") HistogramData data = stats.getHistogramData(histogramType);
}
}
System.out.println("getHistogramData() passed.");
} catch (final Exception e) {
System.out.println("Failed in call to getHistogramData()");
// Should never reach here.
assert (false);
}
try (final RocksIterator iterator = db.newIterator()) {
boolean seekToFirstPassed = false;
for (iterator.seekToFirst(); iterator.isValid(); iterator.next()) {
iterator.status();
assert (iterator.key() != null);
assert (iterator.value() != null);
seekToFirstPassed = true;
}
if (seekToFirstPassed) {
System.out.println("iterator seekToFirst tests passed.");
}
boolean seekToLastPassed = false;
for (iterator.seekToLast(); iterator.isValid(); iterator.prev()) {
iterator.status();
assert (iterator.key() != null);
assert (iterator.value() != null);
seekToLastPassed = true;
}
if (seekToLastPassed) {
System.out.println("iterator seekToLastPassed tests passed.");
}
iterator.seekToFirst();
iterator.seek(iterator.key());
assert (iterator.key() != null);
assert (iterator.value() != null);
System.out.println("iterator seek test passed.");
}
System.out.println("iterator tests passed.");
final List<byte[]> keys = new ArrayList<>();
try (final RocksIterator iterator = db.newIterator()) {
for (iterator.seekToLast(); iterator.isValid(); iterator.prev()) {
keys.add(iterator.key());
}
}
List<byte[]> values = db.multiGetAsList(keys);
assert (values.size() == keys.size());
for (final byte[] value1 : values) {
assert (value1 != null);
}
values = db.multiGetAsList(new ReadOptions(), keys);
assert (values.size() == keys.size());
for (final byte[] value1 : values) {
assert (value1 != null);
}
} catch (final RocksDBException e) {
System.err.println(e);
}
}
}
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