org.apache.flink.api.java.io

类 PrintingOutputFormat<T>

java.lang.Object

org.apache.flink.api.common.io.RichOutputFormat<T>

org.apache.flink.api.java.io.PrintingOutputFormat<T>

类型参数:

T - Input record type

所有已实现的接口:

Serializable, org.apache.flink.api.common.io.OutputFormat<T>

@PublicEvolving
public class PrintingOutputFormat<T>
extends org.apache.flink.api.common.io.RichOutputFormat<T>

Output format that prints results into either stdout or stderr.

Four possible format options: sinkIdentifier:taskId> output <- sinkIdentifier provided, parallelism > 1 sinkIdentifier> output <- sinkIdentifier provided, parallelism == 1 taskId> output <- no sinkIdentifier provided, parallelism > 1 output <- no sinkIdentifier provided, parallelism == 1

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
PrintingOutputFormat() Instantiates a printing output format that prints to standard out.
PrintingOutputFormat(boolean stdErr) Instantiates a printing output format that prints to standard out.
PrintingOutputFormat(String sinkIdentifier, boolean stdErr) Instantiates a printing output format that prints to standard out with a prefixed message.

方法概要

限定符和类型	方法和说明
void	close()
void	configure(org.apache.flink.configuration.Configuration parameters)
void	open(int taskNumber, int numTasks)
String	toString()
void	writeRecord(T record)

从类继承的方法 org.apache.flink.api.common.io.RichOutputFormat

getRuntimeContext, setRuntimeContext

从类继承的方法 java.lang.Object

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

构造器详细资料

PrintingOutputFormat

public PrintingOutputFormat()

Instantiates a printing output format that prints to standard out.

PrintingOutputFormat

public PrintingOutputFormat(boolean stdErr)

Instantiates a printing output format that prints to standard out.

参数:

stdErr - True, if the format should print to standard error instead of standard out.

PrintingOutputFormat

public PrintingOutputFormat(String sinkIdentifier,
                            boolean stdErr)

Instantiates a printing output format that prints to standard out with a prefixed message.

参数:

sinkIdentifier - Message that is prefixed to the output of the value.

stdErr - True, if the format should print to standard error instead of standard out.

方法详细资料

configure

public void configure(org.apache.flink.configuration.Configuration parameters)

open

public void open(int taskNumber,
                 int numTasks)

writeRecord

public void writeRecord(T record)

close

public void close()

toString

public String toString()

覆盖:

toString 在类中 Object