Example usage for org.apache.hadoop.io BytesWritable BytesWritable

Introduction

In this page you can find the example usage for org.apache.hadoop.io BytesWritable BytesWritable.

Prototype

public BytesWritable(byte[] bytes, int length) 

Source Link

Document

Create a BytesWritable using the byte array as the initial value and length as the length.

Usage

From source file:org.apache.kylin.job.hadoop.cardinality.ColumnCardinalityMapper.java

License:Apache License

@Override
protected void cleanup(Context context) throws IOException, InterruptedException {
    Iterator<Integer> it = hllcMap.keySet().iterator();
    while (it.hasNext()) {
        int key = it.next();
        HyperLogLogPlusCounter hllc = hllcMap.get(key);
        ByteBuffer buf = ByteBuffer.allocate(RowConstants.ROWVALUE_BUFFER_SIZE);
        buf.clear();// w w  w  .  j  av  a2s. c  o  m
        hllc.writeRegisters(buf);
        buf.flip();
        context.write(new IntWritable(key), new BytesWritable(buf.array(), buf.limit()));
    }
}

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From source file:org.apache.kylin.source.hive.cardinality.ColumnCardinalityMapper.java

License:Apache License

@Override
protected void doCleanup(Context context) throws IOException, InterruptedException {
    Iterator<Integer> it = hllcMap.keySet().iterator();
    ByteBuffer buf = ByteBuffer.allocate(BufferedMeasureCodec.DEFAULT_BUFFER_SIZE);
    while (it.hasNext()) {
        int key = it.next();
        HLLCounter hllc = hllcMap.get(key);
        buf.clear();/*  w w w.  j  av  a2 s .  c om*/
        hllc.writeRegisters(buf);
        buf.flip();
        context.write(new IntWritable(key), new BytesWritable(buf.array(), buf.limit()));
    }
}

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