org.apache.hadoop.hbase.io.hfile

类 BlockCacheKey

java.lang.Object

org.apache.hadoop.hbase.io.hfile.BlockCacheKey

所有已实现的接口:

Serializable, HeapSize

@InterfaceAudience.Private
public class BlockCacheKey
extends Object
implements HeapSize, Serializable

Cache Key for use with implementations of BlockCache

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
static long	FIXED_OVERHEAD

构造器概要

构造器

构造器和说明
BlockCacheKey(String hfileName, long offset) Construct a new BlockCacheKey
BlockCacheKey(String hfileName, long offset, boolean isPrimaryReplica, BlockType blockType)

方法概要

限定符和类型	方法和说明
boolean	equals(Object o)
BlockType	getBlockType()
String	getHfileName()
long	getOffset()
int	hashCode()
long	heapSize() Strings have two bytes per character due to default Java Unicode encoding (hence length times 2).
boolean	isPrimary()
String	toString()

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

FIXED_OVERHEAD

public static final long FIXED_OVERHEAD

构造器详细资料

BlockCacheKey

public BlockCacheKey(String hfileName,
                     long offset)

Construct a new BlockCacheKey

参数:

hfileName - The name of the HFile this block belongs to.

offset - Offset of the block into the file

BlockCacheKey

public BlockCacheKey(String hfileName,
                     long offset,
                     boolean isPrimaryReplica,
                     BlockType blockType)

方法详细资料

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object

heapSize

public long heapSize()

Strings have two bytes per character due to default Java Unicode encoding (hence length times 2).

指定者:

heapSize 在接口中 HeapSize

getHfileName

public String getHfileName()

返回:

The hfileName portion of this cache key

isPrimary

public boolean isPrimary()

getOffset

public long getOffset()

getBlockType

public BlockType getBlockType()