co.cask.cdap.etl.spark.function

Class CountingFunction<T>

java.lang.Object

co.cask.cdap.etl.spark.function.CountingFunction<T>

Type Parameters:

T - the type of input object

All Implemented Interfaces:

Serializable, org.apache.spark.api.java.function.Function<T,T>

public class CountingFunction<T>
extends Object
implements org.apache.spark.api.java.function.Function<T,T>

Function that doesn't transform anything, but just emits counts for the number of records from that stage.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CountingFunction(String stageName, Metrics metrics, String metricName, DataTracer dataTracer)

Method Summary

Modifier and Type	Method and Description
T	call(T in)

Methods inherited from class java.lang.Object

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

Constructor Detail

CountingFunction

public CountingFunction(String stageName,
                        Metrics metrics,
                        String metricName,
                        @Nullable
                        DataTracer dataTracer)

Method Detail

call

public T call(T in)
       throws Exception

Specified by:

call in interface org.apache.spark.api.java.function.Function<T,T>

Throws:

Exception