Examples with WriteOptions org.rocksdb.WriteOptions used on opensource projects

Example 1 with WriteOptions

use of org.rocksdb.WriteOptions in project kafka by apache.

the class RocksDBStore method openDB.

@SuppressWarnings("unchecked")
public void openDB(ProcessorContext context) {
    // initialize the default rocksdb options
    final BlockBasedTableConfig tableConfig = new BlockBasedTableConfig();
    tableConfig.setBlockCacheSize(BLOCK_CACHE_SIZE);
    tableConfig.setBlockSize(BLOCK_SIZE);
    options = new Options();
    options.setTableFormatConfig(tableConfig);
    options.setWriteBufferSize(WRITE_BUFFER_SIZE);
    options.setCompressionType(COMPRESSION_TYPE);
    options.setCompactionStyle(COMPACTION_STYLE);
    options.setMaxWriteBufferNumber(MAX_WRITE_BUFFERS);
    options.setCreateIfMissing(true);
    options.setErrorIfExists(false);
    options.setInfoLogLevel(InfoLogLevel.ERROR_LEVEL);
    // this is the recommended way to increase parallelism in RocksDb
    // note that the current implementation increases the number of compaction threads
    // but not flush threads.
    options.setIncreaseParallelism(Runtime.getRuntime().availableProcessors());
    wOptions = new WriteOptions();
    wOptions.setDisableWAL(true);
    fOptions = new FlushOptions();
    fOptions.setWaitForFlush(true);
    final Map<String, Object> configs = context.appConfigs();
    final Class<RocksDBConfigSetter> configSetterClass = (Class<RocksDBConfigSetter>) configs.get(StreamsConfig.ROCKSDB_CONFIG_SETTER_CLASS_CONFIG);
    if (configSetterClass != null) {
        final RocksDBConfigSetter configSetter = Utils.newInstance(configSetterClass);
        configSetter.setConfig(name, options, configs);
    }
    // we need to construct the serde while opening DB since
    // it is also triggered by windowed DB segments without initialization
    this.serdes = new StateSerdes<>(name, keySerde == null ? (Serde<K>) context.keySerde() : keySerde, valueSerde == null ? (Serde<V>) context.valueSerde() : valueSerde);
    this.dbDir = new File(new File(context.stateDir(), parentDir), this.name);
    try {
        this.db = openDB(this.dbDir, this.options, TTL_SECONDS);
    } catch (IOException e) {
        throw new StreamsException(e);
    }
}

Example 2 with WriteOptions

use of org.rocksdb.WriteOptions in project flink by apache.

the class ListViaMergeSpeedMiniBenchmark method main.

public static void main(String[] args) throws Exception {
    final File rocksDir = new File("/tmp/rdb");
    FileUtils.deleteDirectory(rocksDir);
    final Options options = new Options().setCompactionStyle(CompactionStyle.LEVEL).setLevelCompactionDynamicLevelBytes(true).setIncreaseParallelism(4).setUseFsync(false).setMaxOpenFiles(-1).setDisableDataSync(true).setCreateIfMissing(true).setMergeOperator(new StringAppendOperator());
    final WriteOptions write_options = new WriteOptions().setSync(false).setDisableWAL(true);
    final RocksDB rocksDB = RocksDB.open(options, rocksDir.getAbsolutePath());
    final String key = "key";
    final String value = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ7890654321";
    final byte[] keyBytes = key.getBytes(StandardCharsets.UTF_8);
    final byte[] valueBytes = value.getBytes(StandardCharsets.UTF_8);
    final int num = 50000;
    // ----- insert -----
    System.out.println("begin insert");
    final long beginInsert = System.nanoTime();
    for (int i = 0; i < num; i++) {
        rocksDB.merge(write_options, keyBytes, valueBytes);
    }
    final long endInsert = System.nanoTime();
    System.out.println("end insert - duration: " + ((endInsert - beginInsert) / 1_000_000) + " ms");
    // ----- read (attempt 1) -----
    final byte[] resultHolder = new byte[num * (valueBytes.length + 2)];
    final long beginGet1 = System.nanoTime();
    rocksDB.get(keyBytes, resultHolder);
    final long endGet1 = System.nanoTime();
    System.out.println("end get - duration: " + ((endGet1 - beginGet1) / 1_000_000) + " ms");
    // ----- read (attempt 2) -----
    final long beginGet2 = System.nanoTime();
    rocksDB.get(keyBytes, resultHolder);
    final long endGet2 = System.nanoTime();
    System.out.println("end get - duration: " + ((endGet2 - beginGet2) / 1_000_000) + " ms");
    // ----- compact -----
    System.out.println("compacting...");
    final long beginCompact = System.nanoTime();
    rocksDB.compactRange();
    final long endCompact = System.nanoTime();
    System.out.println("end compaction - duration: " + ((endCompact - beginCompact) / 1_000_000) + " ms");
    // ----- read (attempt 3) -----
    final long beginGet3 = System.nanoTime();
    rocksDB.get(keyBytes, resultHolder);
    final long endGet3 = System.nanoTime();
    System.out.println("end get - duration: " + ((endGet3 - beginGet3) / 1_000_000) + " ms");
}

Example 3 with WriteOptions

use of org.rocksdb.WriteOptions in project apache-kafka-on-k8s by banzaicloud.

the class RocksDBStore method openDB.

@SuppressWarnings("unchecked")
public void openDB(final ProcessorContext context) {
    // initialize the default rocksdb options
    final BlockBasedTableConfig tableConfig = new BlockBasedTableConfig();
    tableConfig.setBlockCacheSize(BLOCK_CACHE_SIZE);
    tableConfig.setBlockSize(BLOCK_SIZE);
    options = new Options();
    options.setTableFormatConfig(tableConfig);
    options.setWriteBufferSize(WRITE_BUFFER_SIZE);
    options.setCompressionType(COMPRESSION_TYPE);
    options.setCompactionStyle(COMPACTION_STYLE);
    options.setMaxWriteBufferNumber(MAX_WRITE_BUFFERS);
    options.setCreateIfMissing(true);
    options.setErrorIfExists(false);
    options.setInfoLogLevel(InfoLogLevel.ERROR_LEVEL);
    // this is the recommended way to increase parallelism in RocksDb
    // note that the current implementation of setIncreaseParallelism affects the number
    // of compaction threads but not flush threads (the latter remains one). Also
    // the parallelism value needs to be at least two because of the code in
    // https://github.com/facebook/rocksdb/blob/62ad0a9b19f0be4cefa70b6b32876e764b7f3c11/util/options.cc#L580
    // subtracts one from the value passed to determine the number of compaction threads
    // (this could be a bug in the RocksDB code and their devs have been contacted).
    options.setIncreaseParallelism(Math.max(Runtime.getRuntime().availableProcessors(), 2));
    if (prepareForBulkload) {
        options.prepareForBulkLoad();
    }
    wOptions = new WriteOptions();
    wOptions.setDisableWAL(true);
    fOptions = new FlushOptions();
    fOptions.setWaitForFlush(true);
    final Map<String, Object> configs = context.appConfigs();
    final Class<RocksDBConfigSetter> configSetterClass = (Class<RocksDBConfigSetter>) configs.get(StreamsConfig.ROCKSDB_CONFIG_SETTER_CLASS_CONFIG);
    if (configSetterClass != null) {
        final RocksDBConfigSetter configSetter = Utils.newInstance(configSetterClass);
        configSetter.setConfig(name, options, configs);
    }
    this.dbDir = new File(new File(context.stateDir(), parentDir), this.name);
    try {
        this.db = openDB(this.dbDir, this.options, TTL_SECONDS);
    } catch (IOException e) {
        throw new ProcessorStateException(e);
    }
    open = true;
}

Example 4 with WriteOptions

use of org.rocksdb.WriteOptions in project samza by apache.

the class TestRocksDbKeyValueStoreJava method testPerf.

@Test
public void testPerf() throws Exception {
    Config config = new MapConfig();
    Options options = new Options();
    options.setCreateIfMissing(true);
    File dbDir = new File(System.getProperty("java.io.tmpdir") + "/dbStore" + System.currentTimeMillis());
    RocksDbKeyValueStore store = new RocksDbKeyValueStore(dbDir, options, config, false, "dbStore", new WriteOptions(), new FlushOptions(), new KeyValueStoreMetrics("dbStore", new MetricsRegistryMap()));
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    String prefix = "this is the key prefix";
    Random r = new Random();
    for (int i = 0; i < 100000; i++) {
        store.put(genKey(outputStream, prefix, r.nextInt()), genValue());
    }
    byte[] firstKey = genKey(outputStream, prefix, 0);
    byte[] lastKey = genKey(outputStream, prefix, Integer.MAX_VALUE);
    long start;
    start = System.currentTimeMillis();
    KeyValueIterator<byte[], byte[]> iterator1 = store.range(firstKey, lastKey);
    long rangeTime = System.currentTimeMillis() - start;
    start = System.currentTimeMillis();
    Iterators.size(iterator1);
    long rangeIterTime = System.currentTimeMillis() - start;
    System.out.println("range iter create time: " + rangeTime + ", iterate time: " + rangeIterTime);
    iterator1.close();
    // Please comment out range query part in order to do an accurate perf test for snapshot
    start = System.currentTimeMillis();
    KeyValueSnapshot<byte[], byte[]> snapshot = store.snapshot(firstKey, lastKey);
    KeyValueIterator<byte[], byte[]> iterator2 = snapshot.iterator();
    long snapshotTime = System.currentTimeMillis() - start;
    start = System.currentTimeMillis();
    Iterators.size(iterator2);
    long snapshotIterTime = System.currentTimeMillis() - start;
    System.out.println("snapshot iter create time: " + snapshotTime + ", iterate time: " + snapshotIterTime);
    iterator2.close();
    snapshot.close();
    store.close();
}

Example 5 with WriteOptions

use of org.rocksdb.WriteOptions in project samza by apache.

the class TestKeyValueSizeHistogramMetric method setup.

@Before
public void setup() {
    Config config = new MapConfig();
    Options options = new Options();
    options.setCreateIfMissing(true);
    File dbDir = new File(System.getProperty("java.io.tmpdir") + "/dbStore" + System.currentTimeMillis());
    RocksDbKeyValueStore kvStore = new RocksDbKeyValueStore(dbDir, options, config, false, "dbStore", new WriteOptions(), new FlushOptions(), new KeyValueStoreMetrics("dbStore", new MetricsRegistryMap()));
    KeyValueStore<String, String> serializedStore = new SerializedKeyValueStore<>(kvStore, stringSerde, stringSerde, serializedKeyValueStoreMetrics);
    store = new NullSafeKeyValueStore<>(serializedStore);
}