All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.forstdb.MutableColumnFamilyOptionsInterface Maven / Gradle / Ivy

Go to download

ForSt fat jar with modifications specific for Apache Flink that contains .so files for linux32 and linux64 (glibc and musl-libc), jnilib files for Mac OSX, and a .dll for Windows x64.

The newest version!
// 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).

package org.forstdb;

public interface MutableColumnFamilyOptionsInterface<
    T extends MutableColumnFamilyOptionsInterface>
    extends AdvancedMutableColumnFamilyOptionsInterface {
  /**
   * Amount of data to build up in memory (backed by an unsorted log
   * on disk) before converting to a sorted on-disk file.
   * 

* Larger values increase performance, especially during bulk loads. * Up to {@code max_write_buffer_number} write buffers may be held in memory * at the same time, so you may wish to adjust this parameter * to control memory usage. *

* Also, a larger write buffer will result in a longer recovery time * the next time the database is opened. *

* Default: 64MB * @param writeBufferSize the size of write buffer. * @return the instance of the current object. * @throws java.lang.IllegalArgumentException thrown on 32-Bit platforms * while overflowing the underlying platform specific value. */ T setWriteBufferSize(long writeBufferSize); /** * Return size of write buffer size. * * @return size of write buffer. * @see #setWriteBufferSize(long) */ long writeBufferSize(); /** * Disable automatic compactions. Manual compactions can still * be issued on this column family * * @param disableAutoCompactions true if auto-compactions are disabled. * @return the reference to the current option. */ T setDisableAutoCompactions(boolean disableAutoCompactions); /** * Disable automatic compactions. Manual compactions can still * be issued on this column family * * @return true if auto-compactions are disabled. */ boolean disableAutoCompactions(); /** * Number of files to trigger level-0 compaction. A value < 0 means that * level-0 compaction will not be triggered by number of files at all. *

* Default: 4 * * @param level0FileNumCompactionTrigger The number of files to trigger * level-0 compaction * @return the reference to the current option. */ T setLevel0FileNumCompactionTrigger(int level0FileNumCompactionTrigger); /** * Number of files to trigger level-0 compaction. A value < 0 means that * level-0 compaction will not be triggered by number of files at all. *

* Default: 4 * * @return The number of files to trigger */ int level0FileNumCompactionTrigger(); /** * We try to limit number of bytes in one compaction to be lower than this * threshold. But it's not guaranteed. * Value 0 will be sanitized. * * @param maxCompactionBytes max bytes in a compaction * @return the reference to the current option. * @see #maxCompactionBytes() */ T setMaxCompactionBytes(final long maxCompactionBytes); /** * We try to limit number of bytes in one compaction to be lower than this * threshold. But it's not guaranteed. * Value 0 will be sanitized. * * @return the maximum number of bytes in for a compaction. * @see #setMaxCompactionBytes(long) */ long maxCompactionBytes(); /** * The upper-bound of the total size of level-1 files in bytes. * Maximum number of bytes for level L can be calculated as * (maxBytesForLevelBase) * (maxBytesForLevelMultiplier ^ (L-1)) * For example, if maxBytesForLevelBase is 20MB, and if * max_bytes_for_level_multiplier is 10, total data size for level-1 * will be 200MB, total file size for level-2 will be 2GB, * and total file size for level-3 will be 20GB. * by default 'maxBytesForLevelBase' is 256MB. * * @param maxBytesForLevelBase maximum bytes for level base. * * @return the reference to the current option. *

* See {@link AdvancedMutableColumnFamilyOptionsInterface#setMaxBytesForLevelMultiplier(double)} */ T setMaxBytesForLevelBase( long maxBytesForLevelBase); /** * The upper-bound of the total size of level-1 files in bytes. * Maximum number of bytes for level L can be calculated as * (maxBytesForLevelBase) * (maxBytesForLevelMultiplier ^ (L-1)) * For example, if maxBytesForLevelBase is 20MB, and if * max_bytes_for_level_multiplier is 10, total data size for level-1 * will be 200MB, total file size for level-2 will be 2GB, * and total file size for level-3 will be 20GB. * by default 'maxBytesForLevelBase' is 256MB. * * @return the upper-bound of the total size of level-1 files * in bytes. *

* See {@link AdvancedMutableColumnFamilyOptionsInterface#maxBytesForLevelMultiplier()} */ long maxBytesForLevelBase(); /** * Compress blocks using the specified compression algorithm. This * parameter can be changed dynamically. *

* Default: SNAPPY_COMPRESSION, which gives lightweight but fast compression. * * @param compressionType Compression Type. * @return the reference to the current option. */ T setCompressionType( CompressionType compressionType); /** * Compress blocks using the specified compression algorithm. This * parameter can be changed dynamically. *

* Default: SNAPPY_COMPRESSION, which gives lightweight but fast compression. * * @return Compression type. */ CompressionType compressionType(); }





© 2015 - 2024 Weber Informatics LLC | Privacy Policy