org.apache.phoenix.schema

Class SaltingUtil

java.lang.Object

org.apache.phoenix.schema.SaltingUtil

public class SaltingUtil
extends Object

Utility methods related to transparent salting of row keys.

Field Summary

Fields

Modifier and Type	Field and Description
static Integer	MAX_BUCKET_NUM
static int	NUM_SALTING_BYTES
static String	SALTED_ROW_KEY_NAME
static PColumnImpl	SALTING_COLUMN
static String	SALTING_COLUMN_NAME
static RowKeySchema	VAR_BINARY_SALTED_SCHEMA

Constructor Summary

Constructors

Constructor and Description
SaltingUtil()

Method Summary

Modifier and Type	Method and Description
static void	addRegionStartKeyToScanStartAndStopRows(byte[] startKey, byte[] endKey, Scan scan)
static KeyRange	addSaltByte(byte[] startKey, KeyRange minMaxRange)
static List<KeyRange>	generateAllSaltingRanges(int bucketNum)
static byte[][]	getSalteByteSplitPoints(int saltBucketNum)
static byte[]	getSaltedKey(ImmutableBytesWritable key, int bucketNum)
static byte	getSaltingByte(byte[] value, int offset, int length, int bucketNum)

Methods inherited from class java.lang.Object

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

Field Detail

NUM_SALTING_BYTES

public static final int NUM_SALTING_BYTES

See Also:

Constant Field Values

MAX_BUCKET_NUM

public static final Integer MAX_BUCKET_NUM

SALTING_COLUMN_NAME

public static final String SALTING_COLUMN_NAME

See Also:

Constant Field Values

SALTED_ROW_KEY_NAME

public static final String SALTED_ROW_KEY_NAME

See Also:

Constant Field Values

SALTING_COLUMN

public static final PColumnImpl SALTING_COLUMN

VAR_BINARY_SALTED_SCHEMA

public static final RowKeySchema VAR_BINARY_SALTED_SCHEMA

Constructor Detail

SaltingUtil

public SaltingUtil()

Method Detail

generateAllSaltingRanges

public static List<KeyRange> generateAllSaltingRanges(int bucketNum)

getSalteByteSplitPoints

public static byte[][] getSalteByteSplitPoints(int saltBucketNum)

getSaltedKey

public static byte[] getSaltedKey(ImmutableBytesWritable key,
                                  int bucketNum)

getSaltingByte

public static byte getSaltingByte(byte[] value,
                                  int offset,
                                  int length,
                                  int bucketNum)

addSaltByte

public static KeyRange addSaltByte(byte[] startKey,
                                   KeyRange minMaxRange)

addRegionStartKeyToScanStartAndStopRows

public static void addRegionStartKeyToScanStartAndStopRows(byte[] startKey,
                                                           byte[] endKey,
                                                           Scan scan)