Example usage for org.apache.hadoop.mapred RawKeyValueIterator next

Introduction

In this page you can find the example usage for org.apache.hadoop.mapred RawKeyValueIterator next.

Prototype

boolean next() throws IOException;

Source Link

Document

Sets up the current key and value (for getKey and getValue).

Usage

From source file:org.apache.tez.mapreduce.hadoop.mapreduce.ReduceContextImpl.java

License:Apache License

public ReduceContextImpl(Configuration conf, TaskAttemptID taskid, RawKeyValueIterator input,
        Counter inputKeyCounter, Counter inputValueCounter, RecordWriter<KEYOUT, VALUEOUT> output,
        OutputCommitter committer, MRTaskReporter reporter, RawComparator<KEYIN> comparator,
        Class<KEYIN> keyClass, Class<VALUEIN> valueClass) throws InterruptedException, IOException {
    super(conf, taskid, output, committer, reporter);
    this.input = input;
    this.inputKeyCounter = inputKeyCounter;
    this.inputValueCounter = inputValueCounter;
    this.comparator = comparator;
    this.serializationFactory = new SerializationFactory(conf);
    this.keyDeserializer = serializationFactory.getDeserializer(keyClass);
    this.keyDeserializer.open(buffer);
    this.valueDeserializer = serializationFactory.getDeserializer(valueClass);
    this.valueDeserializer.open(buffer);
    hasMore = input.next();
    this.keyClass = keyClass;
    this.valueClass = valueClass;
    this.conf = conf;
    this.taskid = taskid;
}

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