org.apache.hadoop.hbase

类 KeyValue.MetaComparator

java.lang.Object

org.apache.hadoop.hbase.KeyValue.KVComparator

org.apache.hadoop.hbase.KeyValue.MetaComparator

所有已实现的接口:

Comparator<Cell>, KeyValue.SamePrefixComparator<byte[]>, org.apache.hadoop.io.RawComparator<Cell>

封闭类:

KeyValue

public static class KeyValue.MetaComparator
extends KeyValue.KVComparator

A KeyValue.KVComparator for hbase:meta catalog table KeyValues.

构造器概要

构造器

构造器和说明
KeyValue.MetaComparator()

方法概要

方法

限定符和类型	方法和说明
protected Object	clone()
int	compare(Cell left, Cell right) Compare key portion of a KeyValue for keys in hbase:meta table.
int	compareOnlyKeyPortion(Cell left, Cell right)
protected int	compareRowKey(Cell l, Cell r) Override the row key comparison to parse and compare the meta row key parts.
int	compareRows(byte[] left, int loffset, int llength, byte[] right, int roffset, int rlength) Get the b[],o,l for left and right rowkey portions and compare.
String	getLegacyKeyComparatorName() The HFileV2 file format's trailer contains this class name.
byte[]	getShortMidpointKey(byte[] leftKey, byte[] rightKey) Don't do any fancy Block Index splitting tricks.

从类继承的方法 org.apache.hadoop.hbase.KeyValue.KVComparator

calcIndexKey, compare, compareColumns, compareColumns, compareFamilies, compareFlatKey, compareFlatKey, compareIgnoringPrefix, compareKey, compareRows, compareRows, compareTimestamps, matchingRowColumn, matchingRows, matchingRows

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.util.Comparator

equals

构造器详细资料

KeyValue.MetaComparator

public KeyValue.MetaComparator()

方法详细资料

compare

public int compare(Cell left,
          Cell right)

Compare key portion of a KeyValue for keys in hbase:meta table.

指定者:

compare 在接口中 Comparator<Cell>

覆盖:

compare 在类中 KeyValue.KVComparator

compareOnlyKeyPortion

public int compareOnlyKeyPortion(Cell left,
                        Cell right)

覆盖:

compareOnlyKeyPortion 在类中 KeyValue.KVComparator

compareRows

public int compareRows(byte[] left,
              int loffset,
              int llength,
              byte[] right,
              int roffset,
              int rlength)

从类复制的说明: KeyValue.KVComparator

Get the b[],o,l for left and right rowkey portions and compare.

覆盖:

compareRows 在类中 KeyValue.KVComparator

返回:

0 if equal, <0 if left smaller, >0 if right smaller

getShortMidpointKey

public byte[] getShortMidpointKey(byte[] leftKey,
                         byte[] rightKey)

Don't do any fancy Block Index splitting tricks.

覆盖:

getShortMidpointKey 在类中 KeyValue.KVComparator

返回:

0 if equal, <0 if left smaller, >0 if right smaller

getLegacyKeyComparatorName

public String getLegacyKeyComparatorName()

The HFileV2 file format's trailer contains this class name. We reinterpret this and instantiate the appropriate comparator. TODO: With V3 consider removing this.

覆盖:

getLegacyKeyComparatorName 在类中 KeyValue.KVComparator

返回:

legacy class name for FileFileTrailer#comparatorClassName

clone

protected Object clone()
                throws CloneNotSupportedException

覆盖:

clone 在类中 KeyValue.KVComparator

抛出:

CloneNotSupportedException

compareRowKey

protected int compareRowKey(Cell l,
                Cell r)

Override the row key comparison to parse and compare the meta row key parts.

覆盖:

compareRowKey 在类中 KeyValue.KVComparator

返回:

0 if equal, <0 if left smaller, >0 if right smaller