org.apache.hadoop.hive.ql.exec.vector.mapjoin.fast

Class VectorMapJoinFastHashTableContainerBase

java.lang.Object

org.apache.hadoop.hive.ql.exec.vector.mapjoin.fast.VectorMapJoinFastHashTableContainerBase

All Implemented Interfaces:

MemoryEstimate, VectorMapJoinHashTable

Direct Known Subclasses:

VectorMapJoinFastLongHashMapContainer, VectorMapJoinFastLongHashMultiSetContainer, VectorMapJoinFastLongHashSetContainer, VectorMapJoinFastMultiKeyHashMapContainer, VectorMapJoinFastMultiKeyHashMultiSetContainer, VectorMapJoinFastMultiKeyHashSetContainer, VectorMapJoinFastStringHashMapContainer, VectorMapJoinFastStringHashMultiSetContainer, VectorMapJoinFastStringHashSetContainer

public abstract class VectorMapJoinFastHashTableContainerBase
extends Object
implements VectorMapJoinHashTable

MultiHT implementation base

Constructor Summary

Constructors

Constructor and Description
VectorMapJoinFastHashTableContainerBase()

Method Summary

Modifier and Type	Method and Description
boolean	containsLongKey(long currentKey)
abstract long	getEstimatedMemorySize()
abstract long	getHashCode(org.apache.hadoop.io.BytesWritable currentKey)
abstract void	putRow(long hashCode, org.apache.hadoop.io.BytesWritable currentKey, org.apache.hadoop.io.BytesWritable currentValue)
abstract int	size() Get hash table size

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinHashTable

createMatchTracker, createNonMatchedIterator, spillPartitionId

Constructor Detail

VectorMapJoinFastHashTableContainerBase

public VectorMapJoinFastHashTableContainerBase()

Method Detail

putRow

public abstract void putRow(long hashCode,
                            org.apache.hadoop.io.BytesWritable currentKey,
                            org.apache.hadoop.io.BytesWritable currentValue)
                     throws HiveException,
                            IOException

Specified by:

putRow in interface VectorMapJoinHashTable

Parameters:

hashCode - current HashCode to avoid re-computation

currentKey - The current Key in bytes

currentValue - The current Value in bytes

Throws:

HiveException

IOException

getHashCode

public abstract long getHashCode(org.apache.hadoop.io.BytesWritable currentKey)
                          throws HiveException,
                                 IOException

Throws:

HiveException

IOException

getEstimatedMemorySize

public abstract long getEstimatedMemorySize()

Specified by:

getEstimatedMemorySize in interface MemoryEstimate

size

public abstract int size()

Description copied from interface: VectorMapJoinHashTable

Get hash table size

Specified by:

size in interface VectorMapJoinHashTable

containsLongKey

public boolean containsLongKey(long currentKey)

Specified by:

containsLongKey in interface VectorMapJoinHashTable

Parameters:

currentKey - The key to check for existence.

Returns:

true If HashTable contains the given key.