@InterfaceAudience.Private public class BlockCacheKey extends Object implements HeapSize, Serializable
BlockCache
Modifier and Type | Field and Description |
---|---|
private BlockType |
blockType |
static long |
FIXED_OVERHEAD |
private String |
hfileName |
private boolean |
isPrimaryReplicaBlock |
private long |
offset |
private static long |
serialVersionUID |
Constructor and Description |
---|
BlockCacheKey(String hfileName,
long offset)
Construct a new BlockCacheKey
|
BlockCacheKey(String hfileName,
long offset,
boolean isPrimaryReplica,
BlockType blockType) |
Modifier and Type | Method and Description |
---|---|
boolean |
equals(Object o) |
BlockType |
getBlockType() |
String |
getHfileName()
Returns The hfileName portion of this cache key
|
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() |
private static final long serialVersionUID
private final long offset
private final boolean isPrimaryReplicaBlock
public static final long FIXED_OVERHEAD
public BlockCacheKey(String hfileName, long offset)
hfileName
- The name of the HFile this block belongs to.offset
- Offset of the block into the filepublic BlockCacheKey(String hfileName, long offset, boolean isPrimaryReplica, BlockType blockType)
public long heapSize()
public String getHfileName()
public boolean isPrimary()
public long getOffset()
public BlockType getBlockType()
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