Add rate limiter

This commit is contained in:
Ankit Gupta 2014-09-19 16:11:59 -07:00
parent b93797abc4
commit bfeef94d31
7 changed files with 112 additions and 1 deletions

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@ -1,4 +1,4 @@
NATIVE_JAVA_CLASSES = org.rocksdb.RocksDB org.rocksdb.Options org.rocksdb.WriteBatch org.rocksdb.WriteBatchInternal org.rocksdb.WriteBatchTest org.rocksdb.WriteOptions org.rocksdb.BackupableDB org.rocksdb.BackupableDBOptions org.rocksdb.Statistics org.rocksdb.RocksIterator org.rocksdb.VectorMemTableConfig org.rocksdb.SkipListMemTableConfig org.rocksdb.HashLinkedListMemTableConfig org.rocksdb.HashSkipListMemTableConfig org.rocksdb.PlainTableConfig org.rocksdb.BlockBasedTableConfig org.rocksdb.ReadOptions org.rocksdb.Filter org.rocksdb.BloomFilter org.rocksdb.RestoreOptions org.rocksdb.RestoreBackupableDB org.rocksdb.RocksEnv
NATIVE_JAVA_CLASSES = org.rocksdb.RocksDB org.rocksdb.Options org.rocksdb.WriteBatch org.rocksdb.WriteBatchInternal org.rocksdb.WriteBatchTest org.rocksdb.WriteOptions org.rocksdb.BackupableDB org.rocksdb.BackupableDBOptions org.rocksdb.Statistics org.rocksdb.RocksIterator org.rocksdb.VectorMemTableConfig org.rocksdb.SkipListMemTableConfig org.rocksdb.HashLinkedListMemTableConfig org.rocksdb.HashSkipListMemTableConfig org.rocksdb.PlainTableConfig org.rocksdb.BlockBasedTableConfig org.rocksdb.ReadOptions org.rocksdb.Filter org.rocksdb.BloomFilter org.rocksdb.RestoreOptions org.rocksdb.RestoreBackupableDB org.rocksdb.RocksEnv org.rocksdb.GenericRateLimiterConfig
NATIVE_INCLUDE = ./include
ROCKSDB_JAR = rocksdbjni.jar

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@ -76,6 +76,10 @@ public class RocksDBSample {
options.setAllowMmapReads(true);
assert(options.tableFactoryName().equals("PlainTable"));
options.setRateLimiterConfig(new GenericRateLimiterConfig(10000000,
10000, 10));
options.setRateLimiterConfig(new GenericRateLimiterConfig(10000000));
BlockBasedTableConfig table_options = new BlockBasedTableConfig();
table_options.setBlockCacheSize(64 * SizeUnit.KB)
.setFilterBitsPerKey(10)

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@ -0,0 +1,36 @@
// 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;
/**
* Config for rate limiter, which is used to control write rate of flush and
* compaction.
*/
public class GenericRateLimiterConfig extends RateLimiterConfig {
private static final long DEFAULT_REFILL_PERIOD_MICROS = (100 * 1000);
private static final int DEFAULT_FAIRNESS = 10;
public GenericRateLimiterConfig(long rateBytesPerSecond,
long refillPeriodMicros, int fairness) {
rateBytesPerSecond_ = rateBytesPerSecond;
refillPeriodMicros_ = refillPeriodMicros;
fairness_ = fairness;
}
public GenericRateLimiterConfig(long rateBytesPerSecond) {
this(rateBytesPerSecond, DEFAULT_REFILL_PERIOD_MICROS, DEFAULT_FAIRNESS);
}
@Override protected long newRateLimiterHandle() {
return newRateLimiterHandle(rateBytesPerSecond_, refillPeriodMicros_,
fairness_);
}
private native long newRateLimiterHandle(long rateBytesPerSecond,
long refillPeriodMicros, int fairness);
private final long rateBytesPerSecond_;
private final long refillPeriodMicros_;
private final int fairness_;
}

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@ -1105,6 +1105,19 @@ public class Options extends RocksObject {
return this;
}
/**
* Use to control write rate of flush and compaction. Flush has higher
* priority than compaction. Rate limiting is disabled if nullptr.
* Default: nullptr
*
* @param config rate limiter config.
* @return the instance of the current Options.
*/
public Options setRateLimiterConfig(RateLimiterConfig config) {
setRateLimiter(nativeHandle_, config.newRateLimiterHandle());
return this;
}
/**
* Returns the name of the current mem table representation.
* Memtable format can be set using setTableFormatConfig.
@ -2192,6 +2205,8 @@ public class Options extends RocksObject {
private native long statisticsPtr(long optHandle);
private native void setMemTableFactory(long handle, long factoryHandle);
private native void setRateLimiter(long handle,
long rateLimiterHandle);
private native String memTableFactoryName(long handle);
private native void setTableFactory(long handle, long factoryHandle);

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@ -0,0 +1,20 @@
// 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;
/**
* Config for rate limiter, which is used to control write rate of flush and
* compaction.
*/
public abstract class RateLimiterConfig {
/**
* This function should only be called by Options.setRateLimiter(),
* which will create a c++ shared-pointer to the c++ RateLimiter
* that is associated with the Java RateLimtierConifg.
*
* @see Options.setRateLimiter()
*/
abstract protected long newRateLimiterHandle();
}

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@ -21,6 +21,7 @@
#include "rocksdb/memtablerep.h"
#include "rocksdb/table.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/rate_limiter.h"
/*
* Class: org_rocksdb_Options
@ -459,6 +460,17 @@ void Java_org_rocksdb_Options_setMemTableFactory(
reinterpret_cast<rocksdb::MemTableRepFactory*>(jfactory_handle));
}
/*
* Class: org_rocksdb_Options
* Method: setRateLimiter
* Signature: (JJ)V
*/
void Java_org_rocksdb_Options_setRateLimiter(
JNIEnv* env, jobject jobj, jlong jhandle, jlong jrate_limiter_handle) {
reinterpret_cast<rocksdb::Options*>(jhandle)->rate_limiter.reset(
reinterpret_cast<rocksdb::RateLimiter*>(jrate_limiter_handle));
}
/*
* Class: org_rocksdb_Options
* Method: tableCacheNumshardbits

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@ -0,0 +1,24 @@
// 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.
//
// This file implements the "bridge" between Java and C++ for RateLimiter.
#include "rocksjni/portal.h"
#include "include/org_rocksdb_GenericRateLimiterConfig.h"
#include "rocksdb/rate_limiter.h"
/*
* Class: org_rocksdb_GenericRateLimiterConfig
* Method: newRateLimiterHandle
* Signature: (JJI)J
*/
jlong Java_org_rocksdb_GenericRateLimiterConfig_newRateLimiterHandle(
JNIEnv* env, jobject jobj, jlong jrate_bytes_per_second,
jlong jrefill_period_micros, jint jfairness) {
return reinterpret_cast<jlong>(rocksdb::NewGenericRateLimiter(
rocksdb::jlong_to_size_t(jrate_bytes_per_second),
rocksdb::jlong_to_size_t(jrefill_period_micros),
static_cast<int32_t>(jfairness)));
}