com.pervasive.datarush.io

Class SplitOptions

java.lang.Object

com.pervasive.datarush.io.SplitOptions

public class SplitOptions
extends Object

Settings which control the generation of splits on files.

Constructor Summary

Constructors

Constructor and Description
SplitOptions() Create a collection with default settings.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
boolean	getNoPartialSplits() Indicates whether breaking files into multiple splits is allowed.
int	getTargetSize() Gets the target size for split generation.
int	hashCode()
void	set(SplitOptions options) Copies the settings from another collection.
void	setNoPartialSplits(boolean enabled) Controls whether single files are broken into multiple splits.
void	setTargetSize(int size) Sets the size to use, in bytes, for generating file splits.

Methods inherited from class java.lang.Object

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

Constructor Detail

SplitOptions

public SplitOptions()

Create a collection with default settings.

Method Detail

getNoPartialSplits

public boolean getNoPartialSplits()

Indicates whether breaking files into multiple splits is allowed.

Returns:

false if files can be broken into multiple splits, true if they cannot.

setNoPartialSplits

public void setNoPartialSplits(boolean enabled)

Controls whether single files are broken into multiple splits. If this enabled, splits are not allowed to select only a portion of a file. Some formats and use cases may not support sub-file granularity for parallelism, but can support parallelism at the per-file level. This flag supports this situation.

By default, this behavior is disabled.

Split generators must honor this setting.

Parameters:

enabled - indicates whether breaking files into multiple splits is disallowed

getTargetSize

public int getTargetSize()

Gets the target size for split generation.

Returns:

the size to use, in bytes, for splits

setTargetSize

public void setTargetSize(int size)

Sets the size to use, in bytes, for generating file splits. The file system should attempt to produce splits of this size, if possible. Modifying this size can increase (or decrease) the amount of parallelism when reading a file.

If set to 0, the default size for the file system will be used.

Parameters:

size - the size, in bytes, to make file splits

set

public void set(SplitOptions options)

Copies the settings from another collection.

Parameters:

options - the settings to copy

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object