Example usage for org.apache.hadoop.mapreduce.lib.join CompositeInputSplit get

Introduction

In this page you can find the example usage for org.apache.hadoop.mapreduce.lib.join CompositeInputSplit get.

Prototype

public InputSplit get(int i) 

Source Link

Document

Get ith child InputSplit.

Usage

From source file:ca.uwaterloo.iss4e.hadoop.io.CartesianRecordReader.java

License:Open Source License

public CartesianRecordReader(CompositeInputSplit split, TaskAttemptContext taskAttemptContext)
        throws IOException {

    this.leftIS = split.get(0);
    this.rightIS = split.get(1);
    this.rightTaskAttemptContext = taskAttemptContext;
    this.key = new Text();
    this.value = new Text();
    Configuration conf = rightTaskAttemptContext.getConfiguration();
    try {/*from   w  w w .  ja v a2 s  .  c om*/
        // Create left record reader
        FileInputFormat leftFIF = (FileInputFormat) ReflectionUtils
                .newInstance(Class.forName(conf.get(CartesianInputFormat.LEFT_INPUT_FORMAT)), conf);

        leftRR = leftFIF.createRecordReader(leftIS, taskAttemptContext);

        // Create right record reader
        rightFIF = (FileInputFormat) ReflectionUtils
                .newInstance(Class.forName(conf.get(CartesianInputFormat.RIGHT_INPUT_FORMAT)), conf);
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
        throw new IOException(e);
    } catch (InterruptedException e) {
        e.printStackTrace();
        throw new IOException(e);
    }
}

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