fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
375 lines
12 KiB
375 lines
12 KiB
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
package org.rocksdb;
|
|
|
|
/**
|
|
* The config for plain table sst format.
|
|
*
|
|
* BlockBasedTable is a RocksDB's default SST file format.
|
|
*/
|
|
public class BlockBasedTableConfig extends TableFormatConfig {
|
|
|
|
public BlockBasedTableConfig() {
|
|
noBlockCache_ = false;
|
|
blockCacheSize_ = 8 * 1024 * 1024;
|
|
blockCacheNumShardBits_ = 0;
|
|
blockSize_ = 4 * 1024;
|
|
blockSizeDeviation_ = 10;
|
|
blockRestartInterval_ = 16;
|
|
wholeKeyFiltering_ = true;
|
|
filter_ = null;
|
|
cacheIndexAndFilterBlocks_ = false;
|
|
hashIndexAllowCollision_ = true;
|
|
blockCacheCompressedSize_ = 0;
|
|
blockCacheCompressedNumShardBits_ = 0;
|
|
checksumType_ = ChecksumType.kCRC32c;
|
|
indexType_ = IndexType.kBinarySearch;
|
|
}
|
|
|
|
/**
|
|
* Disable block cache. If this is set to true,
|
|
* then no block cache should be used, and the block_cache should
|
|
* point to a {@code nullptr} object.
|
|
* Default: false
|
|
*
|
|
* @param noBlockCache if use block cache
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setNoBlockCache(boolean noBlockCache) {
|
|
noBlockCache_ = noBlockCache;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @return if block cache is disabled
|
|
*/
|
|
public boolean noBlockCache() {
|
|
return noBlockCache_;
|
|
}
|
|
|
|
/**
|
|
* Set the amount of cache in bytes that will be used by RocksDB.
|
|
* If cacheSize is non-positive, then cache will not be used.
|
|
* DEFAULT: 8M
|
|
*
|
|
* @param blockCacheSize block cache size in bytes
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setBlockCacheSize(long blockCacheSize) {
|
|
blockCacheSize_ = blockCacheSize;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @return block cache size in bytes
|
|
*/
|
|
public long blockCacheSize() {
|
|
return blockCacheSize_;
|
|
}
|
|
|
|
/**
|
|
* Controls the number of shards for the block cache.
|
|
* This is applied only if cacheSize is set to non-negative.
|
|
*
|
|
* @param blockCacheNumShardBits the number of shard bits. The resulting
|
|
* number of shards would be 2 ^ numShardBits. Any negative
|
|
* number means use default settings."
|
|
* @return the reference to the current option.
|
|
*/
|
|
public BlockBasedTableConfig setCacheNumShardBits(int blockCacheNumShardBits) {
|
|
blockCacheNumShardBits_ = blockCacheNumShardBits;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of shard bits used in the block cache.
|
|
* The resulting number of shards would be 2 ^ (returned value).
|
|
* Any negative number means use default settings.
|
|
*
|
|
* @return the number of shard bits used in the block cache.
|
|
*/
|
|
public int cacheNumShardBits() {
|
|
return blockCacheNumShardBits_;
|
|
}
|
|
|
|
/**
|
|
* Approximate size of user data packed per block. Note that the
|
|
* block size specified here corresponds to uncompressed data. The
|
|
* actual size of the unit read from disk may be smaller if
|
|
* compression is enabled. This parameter can be changed dynamically.
|
|
* Default: 4K
|
|
*
|
|
* @param blockSize block size in bytes
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setBlockSize(long blockSize) {
|
|
blockSize_ = blockSize;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @return block size in bytes
|
|
*/
|
|
public long blockSize() {
|
|
return blockSize_;
|
|
}
|
|
|
|
/**
|
|
* This is used to close a block before it reaches the configured
|
|
* 'block_size'. If the percentage of free space in the current block is less
|
|
* than this specified number and adding a new record to the block will
|
|
* exceed the configured block size, then this block will be closed and the
|
|
* new record will be written to the next block.
|
|
* Default is 10.
|
|
*
|
|
* @param blockSizeDeviation the deviation to block size allowed
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setBlockSizeDeviation(int blockSizeDeviation) {
|
|
blockSizeDeviation_ = blockSizeDeviation;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @return the hash table ratio.
|
|
*/
|
|
public int blockSizeDeviation() {
|
|
return blockSizeDeviation_;
|
|
}
|
|
|
|
/**
|
|
* Set block restart interval
|
|
*
|
|
* @param restartInterval block restart interval.
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setBlockRestartInterval(int restartInterval) {
|
|
blockRestartInterval_ = restartInterval;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @return block restart interval
|
|
*/
|
|
public int blockRestartInterval() {
|
|
return blockRestartInterval_;
|
|
}
|
|
|
|
/**
|
|
* If true, place whole keys in the filter (not just prefixes).
|
|
* This must generally be true for gets to be efficient.
|
|
* Default: true
|
|
*
|
|
* @param wholeKeyFiltering if enable whole key filtering
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setWholeKeyFiltering(boolean wholeKeyFiltering) {
|
|
wholeKeyFiltering_ = wholeKeyFiltering;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @return if whole key filtering is enabled
|
|
*/
|
|
public boolean wholeKeyFiltering() {
|
|
return wholeKeyFiltering_;
|
|
}
|
|
|
|
/**
|
|
* Use the specified filter policy to reduce disk reads.
|
|
*
|
|
* {@link org.rocksdb.Filter} should not be disposed before options instances
|
|
* using this filter is disposed. If {@link Filter#dispose()} function is not
|
|
* called, then filter object will be GC'd automatically.
|
|
*
|
|
* {@link org.rocksdb.Filter} instance can be re-used in multiple options
|
|
* instances.
|
|
*
|
|
* @param filter {@link org.rocksdb.Filter} Filter Policy java instance.
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setFilter(Filter filter) {
|
|
filter_ = filter;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Indicating if we'd put index/filter blocks to the block cache.
|
|
If not specified, each "table reader" object will pre-load index/filter
|
|
block during table initialization.
|
|
*
|
|
* @return if index and filter blocks should be put in block cache.
|
|
*/
|
|
public boolean cacheIndexAndFilterBlocks() {
|
|
return cacheIndexAndFilterBlocks_;
|
|
}
|
|
|
|
/**
|
|
* Indicating if we'd put index/filter blocks to the block cache.
|
|
If not specified, each "table reader" object will pre-load index/filter
|
|
block during table initialization.
|
|
*
|
|
* @param cacheIndexAndFilterBlocks and filter blocks should be put in block cache.
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setCacheIndexAndFilterBlocks(
|
|
boolean cacheIndexAndFilterBlocks) {
|
|
cacheIndexAndFilterBlocks_ = cacheIndexAndFilterBlocks;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Influence the behavior when kHashSearch is used.
|
|
if false, stores a precise prefix to block range mapping
|
|
if true, does not store prefix and allows prefix hash collision
|
|
(less memory consumption)
|
|
*
|
|
* @return if hash collisions should be allowed.
|
|
*/
|
|
public boolean hashIndexAllowCollision() {
|
|
return hashIndexAllowCollision_;
|
|
}
|
|
|
|
/**
|
|
* Influence the behavior when kHashSearch is used.
|
|
if false, stores a precise prefix to block range mapping
|
|
if true, does not store prefix and allows prefix hash collision
|
|
(less memory consumption)
|
|
*
|
|
* @param hashIndexAllowCollision points out if hash collisions should be allowed.
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setHashIndexAllowCollision(
|
|
boolean hashIndexAllowCollision) {
|
|
hashIndexAllowCollision_ = hashIndexAllowCollision;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Size of compressed block cache. If 0, then block_cache_compressed is set
|
|
* to null.
|
|
*
|
|
* @return size of compressed block cache.
|
|
*/
|
|
public long blockCacheCompressedSize() {
|
|
return blockCacheCompressedSize_;
|
|
}
|
|
|
|
/**
|
|
* Size of compressed block cache. If 0, then block_cache_compressed is set
|
|
* to null.
|
|
*
|
|
* @param blockCacheCompressedSize of compressed block cache.
|
|
* @return the reference to the current config.
|
|
*/
|
|
public BlockBasedTableConfig setBlockCacheCompressedSize(
|
|
long blockCacheCompressedSize) {
|
|
blockCacheCompressedSize_ = blockCacheCompressedSize;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Controls the number of shards for the block compressed cache.
|
|
* This is applied only if blockCompressedCacheSize is set to non-negative.
|
|
*
|
|
* @return numShardBits the number of shard bits. The resulting
|
|
* number of shards would be 2 ^ numShardBits. Any negative
|
|
* number means use default settings.
|
|
*/
|
|
public int blockCacheCompressedNumShardBits() {
|
|
return blockCacheCompressedNumShardBits_;
|
|
}
|
|
|
|
/**
|
|
* Controls the number of shards for the block compressed cache.
|
|
* This is applied only if blockCompressedCacheSize is set to non-negative.
|
|
*
|
|
* @param blockCacheCompressedNumShardBits the number of shard bits. The resulting
|
|
* number of shards would be 2 ^ numShardBits. Any negative
|
|
* number means use default settings."
|
|
* @return the reference to the current option.
|
|
*/
|
|
public BlockBasedTableConfig setBlockCacheCompressedNumShardBits(
|
|
int blockCacheCompressedNumShardBits) {
|
|
blockCacheCompressedNumShardBits_ = blockCacheCompressedNumShardBits;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Sets the checksum type to be used with this table.
|
|
*
|
|
* @param checksumType {@link org.rocksdb.ChecksumType} value.
|
|
* @return the reference to the current option.
|
|
*/
|
|
public BlockBasedTableConfig setChecksumType(ChecksumType checksumType) {
|
|
checksumType_ = checksumType;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @return the currently set checksum type
|
|
*/
|
|
public ChecksumType checksumType() {
|
|
return checksumType_;
|
|
}
|
|
|
|
/**
|
|
* Sets the index type to used with this table.
|
|
*
|
|
* @param indexType {@link org.rocksdb.IndexType} value
|
|
* @return the reference to the current option.
|
|
*/
|
|
public BlockBasedTableConfig setIndexType(IndexType indexType) {
|
|
indexType_ = indexType;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @return the currently set index type
|
|
*/
|
|
public IndexType indexType() {
|
|
return indexType_;
|
|
}
|
|
|
|
@Override protected long newTableFactoryHandle() {
|
|
long filterHandle = 0;
|
|
if (filter_ != null) {
|
|
filterHandle = filter_.nativeHandle_;
|
|
}
|
|
|
|
return newTableFactoryHandle(noBlockCache_, blockCacheSize_,
|
|
blockCacheNumShardBits_, blockSize_, blockSizeDeviation_,
|
|
blockRestartInterval_, wholeKeyFiltering_,
|
|
filterHandle, cacheIndexAndFilterBlocks_,
|
|
hashIndexAllowCollision_, blockCacheCompressedSize_,
|
|
blockCacheCompressedNumShardBits_,
|
|
checksumType_.getValue(), indexType_.getValue());
|
|
}
|
|
|
|
private native long newTableFactoryHandle(
|
|
boolean noBlockCache, long blockCacheSize, int blockCacheNumShardBits,
|
|
long blockSize, int blockSizeDeviation, int blockRestartInterval,
|
|
boolean wholeKeyFiltering, long filterPolicyHandle,
|
|
boolean cacheIndexAndFilterBlocks, boolean hashIndexAllowCollision,
|
|
long blockCacheCompressedSize, int blockCacheCompressedNumShardBits,
|
|
byte checkSumType, byte indexType);
|
|
|
|
private boolean cacheIndexAndFilterBlocks_;
|
|
private IndexType indexType_;
|
|
private boolean hashIndexAllowCollision_;
|
|
private ChecksumType checksumType_;
|
|
private boolean noBlockCache_;
|
|
private long blockSize_;
|
|
private long blockCacheSize_;
|
|
private int blockCacheNumShardBits_;
|
|
private long blockCacheCompressedSize_;
|
|
private int blockCacheCompressedNumShardBits_;
|
|
private int blockSizeDeviation_;
|
|
private int blockRestartInterval_;
|
|
private Filter filter_;
|
|
private boolean wholeKeyFiltering_;
|
|
}
|
|
|