本文整理汇总了Java中org.apache.hadoop.util.LightWeightGSet.computeCapacity方法的典型用法代码示例。如果您正苦于以下问题：Java LightWeightGSet.computeCapacity方法的具体用法？Java LightWeightGSet.computeCapacity怎么用？Java LightWeightGSet.computeCapacity使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.util.LightWeightGSet的用法示例。
在下文中一共展示了LightWeightGSet.computeCapacity方法的8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: RetryCache
import org.apache.hadoop.util.LightWeightGSet; //导入方法依赖的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2: newInstance
import org.apache.hadoop.util.LightWeightGSet; //导入方法依赖的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3: CacheManager
import org.apache.hadoop.util.LightWeightGSet; //导入方法依赖的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4: RetryCache
import org.apache.hadoop.util.LightWeightGSet; //导入方法依赖的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5: newInstance
import org.apache.hadoop.util.LightWeightGSet; //导入方法依赖的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6: RetryCache
import org.apache.hadoop.util.LightWeightGSet; //导入方法依赖的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7: CacheManager
import org.apache.hadoop.util.LightWeightGSet; //导入方法依赖的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8: BlocksMap
import org.apache.hadoop.util.LightWeightGSet; //导入方法依赖的package包/类
BlocksMap(final float loadFactor) {
// Use 2% of total memory to size the GSet capacity
this.capacity = LightWeightGSet.computeCapacity(2.0, "BlocksMap");
this.blocks = new LightWeightGSet<Block, BlockInfo>(capacity);
}