org.apache.hadoop.hbase

Class InnerStoreCellComparator

java.lang.Object

org.apache.hadoop.hbase.CellComparatorImpl

org.apache.hadoop.hbase.InnerStoreCellComparator

All Implemented Interfaces:

Serializable, Comparator<Cell>, CellComparator

@InterfaceAudience.Private
 @InterfaceStability.Evolving
public class InnerStoreCellComparator
extends CellComparatorImpl

Compare two HBase cells inner store, skip compare family for better performance. Important!!! we should not make fake cell with fake family which length greater than zero inner store, otherwise this optimization cannot be used.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static InnerStoreCellComparator	INNER_STORE_COMPARATOR

Fields inherited from class org.apache.hadoop.hbase.CellComparatorImpl

COMPARATOR

Constructor Summary

Constructors

Constructor and Description
InnerStoreCellComparator()

Method Summary

Modifier and Type	Method and Description
protected int	compareFamilies(ByteBufferKeyValue left, int leftFamilyPosition, int leftFamilyLength, ByteBufferKeyValue right, int rightFamilyPosition, int rightFamilyLength) This method will be overridden when we compare cells inner store to bypass family comparing.
protected int	compareFamilies(Cell left, int leftFamilyLength, Cell right, int rightFamilyLength) This method will be overridden when we compare cells inner store to bypass family comparing.
protected int	compareFamilies(KeyValue left, int leftFamilyPosition, int leftFamilyLength, ByteBufferKeyValue right, int rightFamilyPosition, int rightFamilyLength) This method will be overridden when we compare cells inner store to bypass family comparing.
protected int	compareFamilies(KeyValue left, int leftFamilyPosition, int leftFamilyLength, KeyValue right, int rightFamilyPosition, int rightFamilyLength) This method will be overridden when we compare cells inner store to bypass family comparing.
static CellComparator	getInnerStoreCellComparator(byte[] tableName) Utility method that makes a guess at comparator to use based off passed tableName.
static CellComparator	getInnerStoreCellComparator(TableName tableName) Utility method that makes a guess at comparator to use based off passed tableName.

Methods inherited from class org.apache.hadoop.hbase.CellComparatorImpl

compare, compare, compareColumns, compareFamilies, compareQualifiers, compareRows, compareRows, compareTimestamps, compareTimestamps, compareWithoutRow, getCellComparator, getCellComparator, getSimpleComparator

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.hbase.CellComparator

compareRows, compareRows, getInstance

Methods inherited from interface java.util.Comparator

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

Field Detail

INNER_STORE_COMPARATOR

public static final InnerStoreCellComparator INNER_STORE_COMPARATOR

Constructor Detail

InnerStoreCellComparator

public InnerStoreCellComparator()

Method Detail

compareFamilies

protected int compareFamilies(Cell left,
                              int leftFamilyLength,
                              Cell right,
                              int rightFamilyLength)

Description copied from class: CellComparatorImpl

This method will be overridden when we compare cells inner store to bypass family comparing.

Overrides:

compareFamilies in class CellComparatorImpl

compareFamilies

protected int compareFamilies(KeyValue left,
                              int leftFamilyPosition,
                              int leftFamilyLength,
                              KeyValue right,
                              int rightFamilyPosition,
                              int rightFamilyLength)

Description copied from class: CellComparatorImpl

This method will be overridden when we compare cells inner store to bypass family comparing.

Overrides:

compareFamilies in class CellComparatorImpl

compareFamilies

protected int compareFamilies(ByteBufferKeyValue left,
                              int leftFamilyPosition,
                              int leftFamilyLength,
                              ByteBufferKeyValue right,
                              int rightFamilyPosition,
                              int rightFamilyLength)

Description copied from class: CellComparatorImpl

This method will be overridden when we compare cells inner store to bypass family comparing.

Overrides:

compareFamilies in class CellComparatorImpl

compareFamilies

protected int compareFamilies(KeyValue left,
                              int leftFamilyPosition,
                              int leftFamilyLength,
                              ByteBufferKeyValue right,
                              int rightFamilyPosition,
                              int rightFamilyLength)

Description copied from class: CellComparatorImpl

This method will be overridden when we compare cells inner store to bypass family comparing.

Overrides:

compareFamilies in class CellComparatorImpl

getInnerStoreCellComparator

public static CellComparator getInnerStoreCellComparator(TableName tableName)

Utility method that makes a guess at comparator to use based off passed tableName. Use in extreme when no comparator specified.

Returns:

CellComparator to use going off the tableName passed.

getInnerStoreCellComparator

public static CellComparator getInnerStoreCellComparator(byte[] tableName)

Utility method that makes a guess at comparator to use based off passed tableName. Use in extreme when no comparator specified.

Returns:

CellComparator to use going off the tableName passed.