本文整理汇总了Java中org.apache.hadoop.util.LightWeightGSet类的典型用法代码示例。如果您正苦于以下问题：Java LightWeightGSet类的具体用法？Java LightWeightGSet怎么用？Java LightWeightGSet使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
LightWeightGSet类属于org.apache.hadoop.util包，在下文中一共展示了LightWeightGSet类的12个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: BlocksMap
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
BlocksMap(int capacity) {
// Use 2% of total memory to size the GSet capacity
this.capacity = capacity;
this.blocks = new LightWeightGSet<Block, BlockInfoContiguous>(capacity) {
@Override
public Iterator<BlockInfoContiguous> iterator() {
SetIterator iterator = new SetIterator();
/*
* Not tracking any modifications to set. As this set will be used
* always under FSNameSystem lock, modifications will not cause any
* ConcurrentModificationExceptions. But there is a chance of missing
* newly added elements during iteration.
*/
iterator.setTrackModification(false);
return iterator;
}
};
}
示例2: BlocksMap
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
BlocksMap(int capacity) {
// Use 2% of total memory to size the GSet capacity
this.capacity = capacity;
this.blocks = new LightWeightGSet<Block, BlockInfo>(capacity) {
@Override
public Iterator<BlockInfo> iterator() {
SetIterator iterator = new SetIterator();
/*
* Not tracking any modifications to set. As this set will be used
* always under FSNameSystem lock, modifications will not cause any
* ConcurrentModificationExceptions. But there is a chance of missing
* newly added elements during iteration.
*/
iterator.setTrackModification(false);
return iterator;
}
};
}
示例3: RetryCache
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
/**
* Constructor
* @param cacheName name to identify the cache by
* @param percentage percentage of total java heap space used by this cache
* @param expirationTime time for an entry to expire in nanoseconds
*/
public RetryCache(String cacheName, double percentage, long expirationTime) {
int capacity = LightWeightGSet.computeCapacity(percentage, cacheName);
capacity = capacity > MAX_CAPACITY ? capacity : MAX_CAPACITY;
this.set = new LightWeightCache<CacheEntry, CacheEntry>(capacity, capacity,
expirationTime, 0);
this.expirationTime = expirationTime;
this.cacheName = cacheName;
this.retryCacheMetrics = RetryCacheMetrics.create(this);
}
示例4: newInstance
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
static INodeMap newInstance(INodeDirectory rootDir) {
// Compute the map capacity by allocating 1% of total memory
int capacity = LightWeightGSet.computeCapacity(1, "INodeMap");
GSet<INode, INodeWithAdditionalFields> map
= new LightWeightGSet<INode, INodeWithAdditionalFields>(capacity);
map.put(rootDir);
return new INodeMap(map);
}
示例5: CacheManager
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
CacheManager(FSNamesystem namesystem, Configuration conf,
BlockManager blockManager) {
this.namesystem = namesystem;
this.blockManager = blockManager;
this.nextDirectiveId = 1;
this.maxListCachePoolsResponses = conf.getInt(
DFS_NAMENODE_LIST_CACHE_POOLS_NUM_RESPONSES,
DFS_NAMENODE_LIST_CACHE_POOLS_NUM_RESPONSES_DEFAULT);
this.maxListCacheDirectivesNumResponses = conf.getInt(
DFS_NAMENODE_LIST_CACHE_DIRECTIVES_NUM_RESPONSES,
DFS_NAMENODE_LIST_CACHE_DIRECTIVES_NUM_RESPONSES_DEFAULT);
scanIntervalMs = conf.getLong(
DFS_NAMENODE_PATH_BASED_CACHE_REFRESH_INTERVAL_MS,
DFS_NAMENODE_PATH_BASED_CACHE_REFRESH_INTERVAL_MS_DEFAULT);
float cachedBlocksPercent = conf.getFloat(
DFS_NAMENODE_PATH_BASED_CACHE_BLOCK_MAP_ALLOCATION_PERCENT,
DFS_NAMENODE_PATH_BASED_CACHE_BLOCK_MAP_ALLOCATION_PERCENT_DEFAULT);
if (cachedBlocksPercent < MIN_CACHED_BLOCKS_PERCENT) {
LOG.info("Using minimum value {} for {}", MIN_CACHED_BLOCKS_PERCENT,
DFS_NAMENODE_PATH_BASED_CACHE_BLOCK_MAP_ALLOCATION_PERCENT);
cachedBlocksPercent = MIN_CACHED_BLOCKS_PERCENT;
}
this.cachedBlocks = new LightWeightGSet<CachedBlock, CachedBlock>(
LightWeightGSet.computeCapacity(cachedBlocksPercent,
"cachedBlocks"));
}
示例6: RetryCache
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
/**
* Constructor
* @param cacheName name to identify the cache by
* @param percentage percentage of total java heap space used by this cache
* @param expirationTime time for an entry to expire in nanoseconds
*/
public RetryCache(String cacheName, double percentage, long expirationTime) {
int capacity = LightWeightGSet.computeCapacity(percentage, cacheName);
capacity = capacity > 16 ? capacity : 16;
this.set = new LightWeightCache<CacheEntry, CacheEntry>(capacity, capacity,
expirationTime, 0);
this.expirationTime = expirationTime;
this.cacheName = cacheName;
this.retryCacheMetrics = RetryCacheMetrics.create(this);
}
示例7: newInstance
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
static INodeMap newInstance(INodeDirectory rootDir) {
// Compute the map capacity by allocating 1% of total memory
int capacity = LightWeightGSet.computeCapacity(1, "INodeMap");
GSet<INode, INodeWithAdditionalFields> map =
new LightWeightGSet<>(capacity);
map.put(rootDir);
return new INodeMap(map);
}
示例8: RetryCache
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
/**
* Constructor
* @param cacheName name to identify the cache by
* @param percentage percentage of total java heap space used by this cache
* @param expirationTime time for an entry to expire in nanoseconds
*/
public RetryCache(String cacheName, double percentage, long expirationTime) {
int capacity = LightWeightGSet.computeCapacity(percentage, cacheName);
capacity = capacity > 16 ? capacity : 16;
this.set = new LightWeightCache<CacheEntry, CacheEntry>(capacity, capacity,
expirationTime, 0);
this.expirationTime = expirationTime;
}
示例9: CacheManager
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
CacheManager(FSNamesystem namesystem, Configuration conf,
BlockManager blockManager) {
this.namesystem = namesystem;
this.blockManager = blockManager;
this.nextDirectiveId = 1;
this.maxListCachePoolsResponses = conf.getInt(
DFS_NAMENODE_LIST_CACHE_POOLS_NUM_RESPONSES,
DFS_NAMENODE_LIST_CACHE_POOLS_NUM_RESPONSES_DEFAULT);
this.maxListCacheDirectivesNumResponses = conf.getInt(
DFS_NAMENODE_LIST_CACHE_DIRECTIVES_NUM_RESPONSES,
DFS_NAMENODE_LIST_CACHE_DIRECTIVES_NUM_RESPONSES_DEFAULT);
scanIntervalMs = conf.getLong(
DFS_NAMENODE_PATH_BASED_CACHE_REFRESH_INTERVAL_MS,
DFS_NAMENODE_PATH_BASED_CACHE_REFRESH_INTERVAL_MS_DEFAULT);
float cachedBlocksPercent = conf.getFloat(
DFS_NAMENODE_PATH_BASED_CACHE_BLOCK_MAP_ALLOCATION_PERCENT,
DFS_NAMENODE_PATH_BASED_CACHE_BLOCK_MAP_ALLOCATION_PERCENT_DEFAULT);
if (cachedBlocksPercent < MIN_CACHED_BLOCKS_PERCENT) {
LOG.info("Using minimum value " + MIN_CACHED_BLOCKS_PERCENT +
" for " + DFS_NAMENODE_PATH_BASED_CACHE_BLOCK_MAP_ALLOCATION_PERCENT);
cachedBlocksPercent = MIN_CACHED_BLOCKS_PERCENT;
}
this.cachedBlocks = new LightWeightGSet<CachedBlock, CachedBlock>(
LightWeightGSet.computeCapacity(cachedBlocksPercent,
"cachedBlocks"));
}
示例10: getCacheSet
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
@VisibleForTesting
public LightWeightGSet<CacheEntry, CacheEntry> getCacheSet() {
return set;
}
示例11: getNext
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
@Override
public LightWeightGSet.LinkedElement getNext() {
return nextLinkedElement;
}
示例12: setNext
import org.apache.hadoop.util.LightWeightGSet; //导入依赖的package包/类
@Override
public void setNext(LightWeightGSet.LinkedElement next) {
this.nextLinkedElement = next;
}