Class FileSinkProgram.KeyBucketAssigner

java.lang.Object

FileSinkProgram.KeyBucketAssigner

All Implemented Interfaces:

Serializable, BucketAssigner<Tuple2<Integer,Integer>,String>

Enclosing class:

FileSinkProgram

public static final class FileSinkProgram.KeyBucketAssigner
extends Object
implements BucketAssigner<Tuple2<Integer,Integer>,String>

Use first field for buckets.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.streaming.api.functions.sink.filesystem.BucketAssigner

BucketAssigner.Context

Constructor Summary

Constructors

Constructor and Description
KeyBucketAssigner()

Method Summary

Modifier and Type	Method and Description
String	getBucketId(Tuple2<Integer,Integer> element, BucketAssigner.Context context) Returns the identifier of the bucket the provided element should be put into.
SimpleVersionedSerializer<String>	getSerializer()

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyBucketAssigner

public KeyBucketAssigner()

Method Detail

getBucketId

public String getBucketId(Tuple2<Integer,Integer> element,
                          BucketAssigner.Context context)

Description copied from interface: BucketAssigner

Returns the identifier of the bucket the provided element should be put into.

Specified by:

getBucketId in interface BucketAssigner<Tuple2<Integer,Integer>,String>

Parameters:

element - The current element being processed.

context - The context used by the current bucket assigner.

Returns:

A string representing the identifier of the bucket the element should be put into. The actual path to the bucket will result from the concatenation of the returned string and the base path provided during the initialization of the file sink.

getSerializer

public SimpleVersionedSerializer<String> getSerializer()

Specified by:

getSerializer in interface BucketAssigner<Tuple2<Integer,Integer>,String>

Returns:

A SimpleVersionedSerializer capable of serializing/deserializing the elements of type BucketID. That is the type of the objects returned by the BucketAssigner.getBucketId(Object, BucketAssigner.Context).