content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.bookkeeper.statelib.impl.rocksdb;
  
  import lombok.AccessLevel;
  import lombok.NoArgsConstructor;
  import org.rocksdb.ChecksumType;
  import org.rocksdb.CompactionStyle;
  import org.rocksdb.CompressionType;
  import org.rocksdb.InfoLogLevel;
  
  /**
   * Define the constants used by rocksdb based on state store.
   */
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public final class RocksConstants {
  
      public static final CompressionType DEFAULT_COMPRESSION_TYPE = CompressionType.LZ4_COMPRESSION;
      public static final CompactionStyle DEFAULT_COMPACTION_STYLE = CompactionStyle.UNIVERSAL;
      public static final long WRITE_BUFFER_SIZE = 32 * 1024 * 1024L;
      public static final long BLOCK_CACHE_SIZE = 64 * 1024 * 1024;
      public static final long BLOCK_SIZE = 4096L;
      public static final int MAX_WRITE_BUFFERS = 3;
      public static final ChecksumType DEFAULT_CHECKSUM_TYPE = ChecksumType.kNoChecksum;
      public static final InfoLogLevel DEFAULT_LOG_LEVEL = InfoLogLevel.INFO_LEVEL;
      public static final int DEFAULT_PARALLELISM = Math.max(Runtime.getRuntime().availableProcessors(), 2);
  
  }
  