org.apache.hadoop.hbase.util.test

Class RedundantKVGenerator

java.lang.Object

org.apache.hadoop.hbase.util.test.RedundantKVGenerator

@InterfaceAudience.Private
public class RedundantKVGenerator
extends Object

Generate list of key values which are very useful to test data block encoding and compression.

Constructor Summary

Constructors

Constructor and Description
RedundantKVGenerator() Default constructor, assumes all parameters from class constants.
RedundantKVGenerator(Random randomizer, int numberOfRowPrefixes, int averagePrefixLength, int prefixLengthVariance, int averageSuffixLength, int suffixLengthVariance, int numberOfRows, float chanceForSameQualifier, float chanceForSimiliarQualifier, int averageQualifierLength, int qualifierLengthVariance, int columnFamilyLength, int valueLength, float chanceForZeroValue, int baseTimestampDivide, int timestampDiffSize) Various configuration options for generating key values

Method Summary

Modifier and Type	Method and Description
static ByteBuffer	convertKvToByteBuffer(List<KeyValue> keyValues, boolean includesMemstoreTS) Convert list of KeyValues to byte buffer.
List<KeyValue>	generateTestKeyValues(int howMany) Generate test data useful to test encoders.
List<KeyValue>	generateTestKeyValues(int howMany, boolean useTags) Generate test data useful to test encoders.
RedundantKVGenerator	setAveragePrefixLength(int averagePrefixLength)
RedundantKVGenerator	setAverageQualifierLength(int averageQualifierLength)
RedundantKVGenerator	setAverageSuffixLength(int averageSuffixLength)
RedundantKVGenerator	setBaseTimestampDivide(int baseTimestampDivide)
RedundantKVGenerator	setChanceForSameQualifier(float chanceForSameQualifier)
RedundantKVGenerator	setChanceForSimilarQualifier(float chanceForSimiliarQualifier)
RedundantKVGenerator	setChanceForZeroValue(float chanceForZeroValue)
RedundantKVGenerator	setColumnFamilyLength(int columnFamilyLength)
RedundantKVGenerator	setCommonPrefix(byte[] prefix) get/set
RedundantKVGenerator	setFamily(byte[] family)
RedundantKVGenerator	setNumberOfRowPrefixes(int numberOfRowPrefixes)
RedundantKVGenerator	setNumberOfRows(int numberOfRows)
RedundantKVGenerator	setPrefixLengthVariance(int prefixLengthVariance)
RedundantKVGenerator	setQualifierLengthVariance(int qualifierLengthVariance)
RedundantKVGenerator	setRandomizer(Random randomizer)
RedundantKVGenerator	setSuffixLengthVariance(int suffixLengthVariance)
RedundantKVGenerator	setTimestampDiffSize(int timestampDiffSize)
RedundantKVGenerator	setValueLength(int valueLength)

Methods inherited from class java.lang.Object

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

Constructor Detail

RedundantKVGenerator

public RedundantKVGenerator()

Default constructor, assumes all parameters from class constants.

RedundantKVGenerator

public RedundantKVGenerator(Random randomizer,
                            int numberOfRowPrefixes,
                            int averagePrefixLength,
                            int prefixLengthVariance,
                            int averageSuffixLength,
                            int suffixLengthVariance,
                            int numberOfRows,
                            float chanceForSameQualifier,
                            float chanceForSimiliarQualifier,
                            int averageQualifierLength,
                            int qualifierLengthVariance,
                            int columnFamilyLength,
                            int valueLength,
                            float chanceForZeroValue,
                            int baseTimestampDivide,
                            int timestampDiffSize)

Various configuration options for generating key values

Parameters:

randomizer - pick things by random

Method Detail

generateTestKeyValues

public List<KeyValue> generateTestKeyValues(int howMany)

Generate test data useful to test encoders.

Parameters:

howMany - How many Key values should be generated.

Returns:

sorted list of key values

generateTestKeyValues

public List<KeyValue> generateTestKeyValues(int howMany,
                                            boolean useTags)

Generate test data useful to test encoders.

Parameters:

howMany - How many Key values should be generated.

Returns:

sorted list of key values

convertKvToByteBuffer

public static ByteBuffer convertKvToByteBuffer(List<KeyValue> keyValues,
                                               boolean includesMemstoreTS)

Convert list of KeyValues to byte buffer.

Parameters:

keyValues - list of KeyValues to be converted.

Returns:

buffer with content from key values

setCommonPrefix

public RedundantKVGenerator setCommonPrefix(byte[] prefix)

get/set

setRandomizer

public RedundantKVGenerator setRandomizer(Random randomizer)

setNumberOfRowPrefixes

public RedundantKVGenerator setNumberOfRowPrefixes(int numberOfRowPrefixes)

setAveragePrefixLength

public RedundantKVGenerator setAveragePrefixLength(int averagePrefixLength)

setPrefixLengthVariance

public RedundantKVGenerator setPrefixLengthVariance(int prefixLengthVariance)

setAverageSuffixLength

public RedundantKVGenerator setAverageSuffixLength(int averageSuffixLength)

setSuffixLengthVariance

public RedundantKVGenerator setSuffixLengthVariance(int suffixLengthVariance)

setNumberOfRows

public RedundantKVGenerator setNumberOfRows(int numberOfRows)

setChanceForSameQualifier

public RedundantKVGenerator setChanceForSameQualifier(float chanceForSameQualifier)

setChanceForSimilarQualifier

public RedundantKVGenerator setChanceForSimilarQualifier(float chanceForSimiliarQualifier)

setAverageQualifierLength

public RedundantKVGenerator setAverageQualifierLength(int averageQualifierLength)

setQualifierLengthVariance

public RedundantKVGenerator setQualifierLengthVariance(int qualifierLengthVariance)

setColumnFamilyLength

public RedundantKVGenerator setColumnFamilyLength(int columnFamilyLength)

setFamily

public RedundantKVGenerator setFamily(byte[] family)

setValueLength

public RedundantKVGenerator setValueLength(int valueLength)

setChanceForZeroValue

public RedundantKVGenerator setChanceForZeroValue(float chanceForZeroValue)

setBaseTimestampDivide

public RedundantKVGenerator setBaseTimestampDivide(int baseTimestampDivide)

setTimestampDiffSize

public RedundantKVGenerator setTimestampDiffSize(int timestampDiffSize)