org.apache.accumulo.examples.simple.client

Class RandomBatchWriter

java.lang.Object

org.apache.accumulo.examples.simple.client.RandomBatchWriter

public class RandomBatchWriter
extends Object

Simple example for writing random data to Accumulo. See docs/examples/README.batch for instructions. The rows of the entries will be randomly generated numbers between a specified min and max (prefixed by "row_"). The column families will be "foo" and column qualifiers will be "1". The values will be random byte arrays of a specified size.

Constructor Summary

Constructors

Constructor and Description
RandomBatchWriter()

Method Summary

Methods

Modifier and Type	Method and Description
static long	abs(long l)
static Mutation	createMutation(long rowid, int dataSize, ColumnVisibility visibility) Creates a mutation on a specified row with column family "foo", column qualifier "1", specified visibility, and a random value of specified size.
static byte[]	createValue(long rowid, int dataSize) Creates a random byte array of specified size using the specified seed.
static void	main(String[] args) Writes a specified number of entries to Accumulo using a BatchWriter.

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomBatchWriter

public RandomBatchWriter()

Method Detail

createValue

public static byte[] createValue(long rowid,
                 int dataSize)

Creates a random byte array of specified size using the specified seed.

Parameters:

rowid - the seed to use for the random number generator

dataSize - the size of the array

Returns:

a random byte array

createMutation

public static Mutation createMutation(long rowid,
                      int dataSize,
                      ColumnVisibility visibility)

Creates a mutation on a specified row with column family "foo", column qualifier "1", specified visibility, and a random value of specified size.

Parameters:

rowid - the row of the mutation

dataSize - the size of the random value

visibility - the visibility of the entry to insert

Returns:

a mutation

abs

public static long abs(long l)

main

public static void main(String[] args)
                 throws AccumuloException,
                        AccumuloSecurityException,
                        TableNotFoundException

Writes a specified number of entries to Accumulo using a BatchWriter.

Throws:

AccumuloException

AccumuloSecurityException

TableNotFoundException