org.rocksdb.Options.<init>()方法的使用及代码示例

x33g5p2x  于2022-01-25 转载在 其他  
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本文整理了Java中org.rocksdb.Options.<init>()方法的一些代码示例，展示了Options.<init>()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Options.<init>()方法的具体详情如下：
包路径：org.rocksdb.Options
类名称：Options
方法名：<init>

Options.<init>介绍

[英]Construct options for opening a RocksDB. This constructor will create (by allocating a block of memory) an rocksdb::Options in the c++ side.
[中]构造用于打开RocksDB的选项。这个构造函数将创建（通过分配内存块）C++中的ROCKSDB:：选项。

代码示例

代码示例来源：origin: apache/kylin

public RocksDBLookupTable(TableDesc tableDesc, String[] keyColumns, String dbPath) {
  this.options = new Options();
  this.rowEncoder = new RocksDBLookupRowEncoder(tableDesc, keyColumns);
  try {
    this.rocksDB = RocksDB.openReadOnly(options, dbPath);
  } catch (RocksDBException e) {
    throw new IllegalStateException("cannot open rocks db in path:" + dbPath, e);
  }
}

代码示例来源：origin: alibaba/jstorm

public void initDb(List<Integer> list) throws Exception {
  Options dbOptions = new Options().setCreateMissingColumnFamilies(true).setCreateIfMissing(true);
  initDb(list, dbOptions);
}

代码示例来源：origin: apache/storm

boolean createIfMissing = ObjectReader.getBoolean(config.get(DaemonConfig.STORM_ROCKSDB_CREATE_IF_MISSING), false);
try (Options options = new Options().setCreateIfMissing(createIfMissing)) {

代码示例来源：origin: alibaba/jstorm

public RocksDbCacheOperator(TopologyContext context, String cacheDir) {
  this.stormConf = context.getStormConf();
  this.maxFlushSize = ConfigExtension.getTransactionCacheBatchFlushSize(stormConf);
  Options rocksDbOpt = new Options();
  rocksDbOpt.setCreateMissingColumnFamilies(true).setCreateIfMissing(true);
  long bufferSize =
      ConfigExtension.getTransactionCacheBlockSize(stormConf) != null ? ConfigExtension.getTransactionCacheBlockSize(stormConf) : (1 * SizeUnit.GB);
  rocksDbOpt.setWriteBufferSize(bufferSize);
  int maxBufferNum = ConfigExtension.getTransactionMaxCacheBlockNum(stormConf) != null ? ConfigExtension.getTransactionMaxCacheBlockNum(stormConf) : 3;
  rocksDbOpt.setMaxWriteBufferNumber(maxBufferNum);
  // Config for log of RocksDb
  rocksDbOpt.setMaxLogFileSize(1073741824); // 1G
  rocksDbOpt.setKeepLogFileNum(1);
  rocksDbOpt.setInfoLogLevel(InfoLogLevel.WARN_LEVEL);
  
  try {
    Map<Object, Object> conf = new HashMap<Object, Object>();
    conf.put(ROCKSDB_ROOT_DIR, cacheDir);
    conf.put(ROCKSDB_RESET, true);
    initDir(conf);
    initDb(null, rocksDbOpt);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
  kryo = new Kryo();
  output = new Output(200, 2000000000);
  input = new Input(1);
  LOG.info("Finished rocksDb cache init: maxFlushSize={}, bufferSize={}, maxBufferNum={}", maxFlushSize, bufferSize, maxBufferNum);
}

代码示例来源：origin: brianfrankcooper/YCSB

final Options options = new Options()
  .optimizeLevelStyleCompaction()
  .setCreateIfMissing(true)

代码示例来源：origin: alibaba/jstorm

Options options = new Options();
options.setCreateMissingColumnFamilies(true);
options.setCreateIfMissing(true);

代码示例来源：origin: apache/kylin

public RocksDBLookupBuilder(TableDesc tableDesc, String[] keyColumns, String dbPath) {
  this.tableDesc = tableDesc;
  this.encoder = new RocksDBLookupRowEncoder(tableDesc, keyColumns);
  this.dbPath = dbPath;
  this.writeBatchSize = 500;
  this.options = new Options();
  options.setCreateIfMissing(true).setWriteBufferSize(8 * SizeUnit.KB).setMaxWriteBufferNumber(3)
      .setMaxBackgroundCompactions(5).setCompressionType(CompressionType.SNAPPY_COMPRESSION)
      .setCompactionStyle(CompactionStyle.UNIVERSAL);
}

代码示例来源：origin: ethereum/ethereumj

try (Options options = new Options()) {

代码示例来源：origin: hugegraph/hugegraph

public static Set<String> listCFs(String path) throws RocksDBException {
  Set<String> cfs = new HashSet<>();
  List<byte[]> oldCFs = RocksDB.listColumnFamilies(new Options(), path);
  if (oldCFs.isEmpty()) {
    cfs.add("default");
  } else {
    for (byte[] oldCF : oldCFs) {
      cfs.add(decode(oldCF));
    }
  }
  return cfs;
}

代码示例来源：origin: ltsopensource/light-task-scheduler

@Override
protected void init() throws FailStoreException {
  try {
    options = new Options();
    options.setCreateIfMissing(true)
        .setWriteBufferSize(8 * SizeUnit.KB)
        .setMaxWriteBufferNumber(3)
        .setMaxBackgroundCompactions(10)
        .setCompressionType(CompressionType.SNAPPY_COMPRESSION)
        .setCompactionStyle(CompactionStyle.UNIVERSAL);
    Filter bloomFilter = new BloomFilter(10);
    BlockBasedTableConfig tableConfig = new BlockBasedTableConfig();
    tableConfig.setBlockCacheSize(64 * SizeUnit.KB)
        .setFilter(bloomFilter)
        .setCacheNumShardBits(6)
        .setBlockSizeDeviation(5)
        .setBlockRestartInterval(10)
        .setCacheIndexAndFilterBlocks(true)
        .setHashIndexAllowCollision(false)
        .setBlockCacheCompressedSize(64 * SizeUnit.KB)
        .setBlockCacheCompressedNumShardBits(10);
    options.setTableFormatConfig(tableConfig);
  } catch (Exception e) {
    throw new FailStoreException(e);
  }
}

代码示例来源：origin: ltsopensource/light-task-scheduler

@Override
protected void init() throws FailStoreException {
  try {
    options = new Options();
    options.setCreateIfMissing(true)
        .setWriteBufferSize(8 * SizeUnit.KB)
        .setMaxWriteBufferNumber(3)
        .setMaxBackgroundCompactions(10)
        .setCompressionType(CompressionType.SNAPPY_COMPRESSION)
        .setCompactionStyle(CompactionStyle.UNIVERSAL);
    Filter bloomFilter = new BloomFilter(10);
    BlockBasedTableConfig tableConfig = new BlockBasedTableConfig();
    tableConfig.setBlockCacheSize(64 * SizeUnit.KB)
        .setFilter(bloomFilter)
        .setCacheNumShardBits(6)
        .setBlockSizeDeviation(5)
        .setBlockRestartInterval(10)
        .setCacheIndexAndFilterBlocks(true)
        .setHashIndexAllowCollision(false)
        .setBlockCacheCompressedSize(64 * SizeUnit.KB)
        .setBlockCacheCompressedNumShardBits(10);
    options.setTableFormatConfig(tableConfig);
  } catch (Exception e) {
    throw new FailStoreException(e);
  }
}

代码示例来源：origin: alibaba/jstorm

@Override
public Options createOptions(Options currentOptions) {
  if (currentOptions == null)
    currentOptions = new Options();
  currentOptions.setCreateIfMissing(true);
  currentOptions.setCreateMissingColumnFamilies(true);

代码示例来源：origin: hugegraph/hugegraph

@Override
public void createTable(String table) throws RocksDBException {
  EnvOptions env = new EnvOptions();
  Options options = new Options();
  RocksDBStdSessions.initOptions(this.conf, options, options, options);
  // NOTE: unset merge op due to SIGSEGV when cf.setMergeOperatorName()
  options.setMergeOperatorName("not-exist-merge-op");
  SstFileWriter sst = new SstFileWriter(env, options);
  Path path = Paths.get(this.dataPath, table);
  sst.open(path.toString() + ".sst");
  this.tables.put(table, sst);
}

代码示例来源：origin: hugegraph/hugegraph

public RocksDBStdSessions(HugeConfig config, String dataPath,
             String walPath, String database, String store)
             throws RocksDBException {
  super(database, store);
  this.conf = config;
  // Init options
  Options options = new Options();
  RocksDBStdSessions.initOptions(this.conf, options, options, options);
  options.setWalDir(walPath);
  /*
   * Open RocksDB at the first time
   * Don't merge old CFs, we expect a clear DB when using this one
   */
  this.rocksdb = RocksDB.open(options, dataPath);
}

代码示例来源：origin: com.baidu.hugegraph/hugegraph-rocksdb

public static Set<String> listCFs(String path) throws RocksDBException {
  Set<String> cfs = new HashSet<>();
  List<byte[]> oldCFs = RocksDB.listColumnFamilies(new Options(), path);
  if (oldCFs.isEmpty()) {
    cfs.add("default");
  } else {
    for (byte[] oldCF : oldCFs) {
      cfs.add(decode(oldCF));
    }
  }
  return cfs;
}

代码示例来源：origin: nlpie/biomedicus

RocksDBNormalizerModel(Path dbPath) {
 RocksDB.loadLibrary();
 try (Options options = new Options().setInfoLogLevel(InfoLogLevel.ERROR_LEVEL)) {
  db = RocksDB.openReadOnly(options, dbPath.toString());
 } catch (RocksDBException e) {
  throw new RuntimeException(e);
 }
}

代码示例来源：origin: nlpie/biomedicus

@Override
public SuffixDataStore createSuffixDataStore(int id) {
 RocksDB.loadLibrary();
 try (Options options = new Options().setCreateIfMissing(true).prepareForBulkLoad()) {
  Files.createDirectories(dbPath);
  RocksDB rocksDB = RocksDB.open(options, dbPath.resolve(getSuffixesName(id)).toString());
  rocksDBS.add(rocksDB);
  return new RocksDbSuffixDataStore(rocksDB);
 } catch (RocksDBException | IOException e) {
  throw new RuntimeException(e);
 }
}

代码示例来源：origin: apache/samza

@BeforeClass
static public void createRocksDb() throws IOException, RocksDBException {
 if (Files.exists(dirPath)) {
  removeRecursiveDirectory(dirPath);
 }
 Files.createDirectories(dirPath);
 Options options = new Options().setCreateIfMissing(true);
 db = RocksDB.open(options, dirPath.toString());
 db.put("testString".getBytes(), "this is string".getBytes());
 db.put(ByteBuffer.allocate(4).putInt(123).array(), ByteBuffer.allocate(4).putInt(456).array());
}

代码示例来源：origin: weiboad/fiery

public DBSharder(String dbpath, Long timestamp) throws RocksDBException {
  log = LoggerFactory.getLogger(DBSharder.class);
  RocksDB.loadLibrary();
  options = new Options();
  env = options.getEnv();
  env.setBackgroundThreads(2);
  options.setEnv(env);
  options.setCreateIfMissing(true);
  options.setDbLogDir(dbpath + "/logs/");
  options.setMergeOperator(new StringAppendOperator());
  db = RocksDB.open(options, dbpath + "/" + timestamp);
}

代码示例来源：origin: locationtech/geowave

public synchronized RocksDBMetadataTable getMetadataTable(final MetadataType type) {
 if (metadataOptions == null) {
  RocksDB.loadLibrary();
  metadataOptions = new Options().setCreateIfMissing(true).optimizeForSmallDb();
 }
 final String directory = subDirectory + "/" + type.name();
 return metadataTableCache.get(
   keyCache.get(directory, d -> new CacheKey(d, type.equals(MetadataType.STATS))));
}

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