Package org.apache.hadoop.hbase

Class StripeCompactionsPerformanceEvaluation.SeqShardedDataGenerator

java.lang.Object

org.apache.hadoop.hbase.util.test.LoadTestDataGenerator

org.apache.hadoop.hbase.StripeCompactionsPerformanceEvaluation.SeqShardedDataGenerator

Enclosing class:

StripeCompactionsPerformanceEvaluation

public static class StripeCompactionsPerformanceEvaluation.SeqShardedDataGenerator
extends LoadTestDataGenerator

Field Summary

Fields

Modifier and Type	Field	Description
private static final byte[][]	COLUMN_NAMES
private final int	numPartitions
private static final int	PAD_TO
private static final int	PREFIX_PAD_TO

Fields inherited from class org.apache.hadoop.hbase.util.test.LoadTestDataGenerator

args, INCREMENT, kvGenerator, MUTATE_INFO

Constructor Summary

Constructors

Constructor	Description
SeqShardedDataGenerator(int minValueSize, int maxValueSize, int numPartitions)

Method Summary

Modifier and Type	Method	Description
byte[][]	generateColumnsForCf(byte[] rowKey, byte[] cf)	Generates an applicable set of columns to be used for a particular key and family.
byte[]	generateValue(byte[] rowKey, byte[] cf, byte[] column)	Generates a value to be used for a particular row/cf/column.
byte[][]	getColumnFamilies()	Gets column families for the load test table.
byte[]	getDeterministicUniqueKey(long keyBase)	Generates a deterministic, unique hashed row key from a number.
private String	getPrefix(long i)
boolean	verify(byte[] rowKey, byte[] cf, byte[] column, byte[] value)	Checks that value for a rowKey/cf/column is valid if generated via LoadTestDataGenerator.generateValue(byte[], byte[], byte[])
boolean	verify(byte[] rowKey, byte[] cf, Set<byte[]> columnSet)	Checks that columns for a rowKey and cf are valid if generated via LoadTestDataGenerator.generateColumnsForCf(byte[], byte[])

Methods inherited from class org.apache.hadoop.hbase.util.test.LoadTestDataGenerator

beforeGet, beforeMutate, generateData, getArgs, initialize

Methods inherited from class java.lang.Object

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

Field Details

COLUMN_NAMES

private static final byte[][] COLUMN_NAMES

PAD_TO

private static final int PAD_TO

See Also:

• Constant Field Values

PREFIX_PAD_TO

private static final int PREFIX_PAD_TO

See Also:

• Constant Field Values

numPartitions

private final int numPartitions

Constructor Details

SeqShardedDataGenerator

public SeqShardedDataGenerator(int minValueSize,
 int maxValueSize,
 int numPartitions)

Method Details

getDeterministicUniqueKey

public byte[] getDeterministicUniqueKey(long keyBase)

Description copied from class: LoadTestDataGenerator

Generates a deterministic, unique hashed row key from a number. That way, the user can keep track of numbers, without messing with byte array and ensuring key distribution.

Specified by:

getDeterministicUniqueKey in class LoadTestDataGenerator

Parameters:

keyBase - Base number for a key, such as a loop counter.

getPrefix

private String getPrefix(long i)

getColumnFamilies

public byte[][] getColumnFamilies()

Description copied from class: LoadTestDataGenerator

Gets column families for the load test table.

Specified by:

getColumnFamilies in class LoadTestDataGenerator

Returns:

The array of byte[]s representing column family names.

generateColumnsForCf

public byte[][] generateColumnsForCf(byte[] rowKey,
 byte[] cf)

Description copied from class: LoadTestDataGenerator

Generates an applicable set of columns to be used for a particular key and family.

Specified by:

generateColumnsForCf in class LoadTestDataGenerator

Parameters:

rowKey - The row key to generate for.

cf - The column family name to generate for.

Returns:

The array of byte[]s representing column names.

generateValue

public byte[] generateValue(byte[] rowKey,
 byte[] cf,
 byte[] column)

Description copied from class: LoadTestDataGenerator

Generates a value to be used for a particular row/cf/column.

Specified by:

generateValue in class LoadTestDataGenerator

Parameters:

rowKey - The row key to generate for.

cf - The column family name to generate for.

column - The column name to generate for.

Returns:

The value to use.

verify

public boolean verify(byte[] rowKey,
 byte[] cf,
 byte[] column,
 byte[] value)

Description copied from class: LoadTestDataGenerator

Checks that value for a rowKey/cf/column is valid if generated via LoadTestDataGenerator.generateValue(byte[], byte[], byte[])

Specified by:

verify in class LoadTestDataGenerator

Parameters:

rowKey - The row key to verify for.

cf - The column family name to verify for.

column - The column name to verify for.

value - The value (for example, encountered by read).

Returns:

True iff valid.

verify

public boolean verify(byte[] rowKey,
 byte[] cf,
 Set<byte[]> columnSet)

Description copied from class: LoadTestDataGenerator

Checks that columns for a rowKey and cf are valid if generated via LoadTestDataGenerator.generateColumnsForCf(byte[], byte[])

Specified by:

verify in class LoadTestDataGenerator

Parameters:

rowKey - The row key to verify for.

cf - The column family name to verify for.

columnSet - The column set (for example, encountered by read).

Returns:

True iff valid.