Package org.apache.hadoop.hbase.regionserver

Class EncodedSeekPerformanceTest

java.lang.Object

org.apache.hadoop.hbase.regionserver.EncodedSeekPerformanceTest

public class EncodedSeekPerformanceTest
extends Object

Test seek performance for encoded data blocks. Read an HFile and do several random seeks.

Field Summary

Fields

Modifier and Type	Field	Description
private static final double	BYTES_IN_MEGABYTES
private org.apache.hadoop.hbase.io.hfile.CacheConfig	cacheConf
private org.apache.hadoop.conf.Configuration	configuration
static int	DEFAULT_NUMBER_OF_SEEKS	Default number of seeks which will be used in benchmark.
private static final double	NANOSEC_IN_SEC
private int	numberOfSeeks
private Random	randomizer
private final HBaseTestingUtility	testingUtility

Constructor Summary

Constructors

Constructor	Description
EncodedSeekPerformanceTest()	Use this benchmark with default options

Method Summary

Modifier and Type	Method	Description
private void	clearBlockCache()
static void	main(String[] args)	Command line interface:
private List<org.apache.hadoop.hbase.Cell>	prepareListOfTestSeeks(org.apache.hadoop.fs.Path path)
private static void	printUsage()
private void	runTest(org.apache.hadoop.fs.Path path, org.apache.hadoop.hbase.io.encoding.DataBlockEncoding blockEncoding, List<org.apache.hadoop.hbase.Cell> seeks)
void	runTests(org.apache.hadoop.fs.Path path, org.apache.hadoop.hbase.io.encoding.DataBlockEncoding[] encodings)

Methods inherited from class java.lang.Object

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

Field Details

NANOSEC_IN_SEC

private static final double NANOSEC_IN_SEC

See Also:

• Constant Field Values

BYTES_IN_MEGABYTES

private static final double BYTES_IN_MEGABYTES

See Also:

• Constant Field Values

DEFAULT_NUMBER_OF_SEEKS

public static int DEFAULT_NUMBER_OF_SEEKS

Default number of seeks which will be used in benchmark.

testingUtility

private final HBaseTestingUtility testingUtility

configuration

private org.apache.hadoop.conf.Configuration configuration

cacheConf

private org.apache.hadoop.hbase.io.hfile.CacheConfig cacheConf

randomizer

private Random randomizer

numberOfSeeks

private int numberOfSeeks

Constructor Details

EncodedSeekPerformanceTest

public EncodedSeekPerformanceTest()

Use this benchmark with default options

Method Details

prepareListOfTestSeeks

private List<org.apache.hadoop.hbase.Cell> prepareListOfTestSeeks(org.apache.hadoop.fs.Path path)
                                                           throws IOException

Throws:

IOException

runTest

private void runTest(org.apache.hadoop.fs.Path path,
 org.apache.hadoop.hbase.io.encoding.DataBlockEncoding blockEncoding,
 List<org.apache.hadoop.hbase.Cell> seeks)
              throws IOException

Throws:

IOException

runTests

public void runTests(org.apache.hadoop.fs.Path path,
 org.apache.hadoop.hbase.io.encoding.DataBlockEncoding[] encodings)
              throws IOException

Parameters:

path - Path to the HFile which will be used.

encodings - the data block encoding algorithms to use

Throws:

IOException - if there is a bug while reading from disk

main

public static void main(String[] args)
                 throws IOException

Command line interface:

Parameters:

args - Takes one argument - file size.

Throws:

IOException - if there is a bug while reading from disk

printUsage

private static void printUsage()

clearBlockCache

private void clearBlockCache()