org.apache.flink.api.java.record.io

Class ExternalProcessInputSplit

java.lang.Object

org.apache.flink.core.io.GenericInputSplit

org.apache.flink.api.java.record.io.ExternalProcessInputSplit

All Implemented Interfaces:

Serializable, InputSplit, IOReadableWritable

public class ExternalProcessInputSplit
extends GenericInputSplit

The ExternalProcessInputSplit contains all informations for InputFormat that read their data from external processes. Each parallel instance of an InputFormat starts an external process and reads its output. The command to start the external process must be executable on all nodes.

See Also:

ExternalProcessInputFormat, ExternalProcessFixedLengthInputFormat, Serialized Form

Constructor Summary

Constructors

Constructor and Description
ExternalProcessInputSplit()
ExternalProcessInputSplit(int splitNumber, int numSplits, String extProcCommand) Instantiates an ExternalProcessInputSplit

Method Summary

Methods

Modifier and Type	Method and Description
String	getExternalProcessCommand() Returns the command to be executed to derive the input for this split
void	read(DataInputView in)
void	write(DataOutputView out)

Methods inherited from class org.apache.flink.core.io.GenericInputSplit

equals, getSplitNumber, getTotalNumberOfSplits, hashCode, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ExternalProcessInputSplit

public ExternalProcessInputSplit()

ExternalProcessInputSplit

public ExternalProcessInputSplit(int splitNumber,
                         int numSplits,
                         String extProcCommand)

Instantiates an ExternalProcessInputSplit

Parameters:

splitNumber - The number of the input split

extProcCommand - The command to be executed for the input split

Method Detail

getExternalProcessCommand

public String getExternalProcessCommand()

Returns the command to be executed to derive the input for this split

Returns:

the command to be executed to derive the input for this split

read

public void read(DataInputView in)
          throws IOException

Specified by:

read in interface IOReadableWritable

Overrides:

read in class GenericInputSplit

Throws:

IOException

write

public void write(DataOutputView out)
           throws IOException

Specified by:

write in interface IOReadableWritable

Overrides:

write in class GenericInputSplit

Throws:

IOException