org.apache.hadoop.hbase.regionserver

Class ReversedKeyValueHeap.ReversedKVScannerComparator

java.lang.Object

org.apache.hadoop.hbase.regionserver.KeyValueHeap.KVScannerComparator

org.apache.hadoop.hbase.regionserver.ReversedKeyValueHeap.ReversedKVScannerComparator

All Implemented Interfaces:

Comparator<KeyValueScanner>

Enclosing class:

ReversedKeyValueHeap

private static class ReversedKeyValueHeap.ReversedKVScannerComparator
extends KeyValueHeap.KVScannerComparator

In ReversedKVScannerComparator, we compare the row of scanners' peek values first, sort bigger one before the smaller one. Then compare the KeyValue if they have the equal row, sort smaller one before the bigger one

Field Summary

Fields inherited from class org.apache.hadoop.hbase.regionserver.KeyValueHeap.KVScannerComparator

kvComparator

Constructor Summary

Constructors

Constructor and Description
ReversedKVScannerComparator(CellComparator kvComparator) Constructor

Method Summary

Modifier and Type	Method and Description
int	compare(KeyValueScanner left, KeyValueScanner right)
int	compareRows(Cell left, Cell right) Compares rows of two KeyValue

Methods inherited from class org.apache.hadoop.hbase.regionserver.KeyValueHeap.KVScannerComparator

compare, getComparator

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

ReversedKVScannerComparator

public ReversedKVScannerComparator(CellComparator kvComparator)

Constructor

Parameters:

kvComparator -

Method Detail

compare

public int compare(KeyValueScanner left,
                   KeyValueScanner right)

Specified by:

compare in interface Comparator<KeyValueScanner>

Overrides:

compare in class KeyValueHeap.KVScannerComparator

compareRows

public int compareRows(Cell left,
                       Cell right)

Compares rows of two KeyValue

Parameters:

left -

right -

Returns:

less than 0 if left is smaller, 0 if equal etc..