Java Code Examples for org.apache.hadoop.mapreduce.Mapper.Context#getConfiguration()

The following examples show how to use org.apache.hadoop.mapreduce.Mapper.Context#getConfiguration() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ParquetExportMapper.java    From aliyun-maxcompute-data-collectors with Apache License 2.0 5 votes vote down vote up 
@Override
protected void setup(Context context) throws IOException, InterruptedException {
  super.setup(context);

  Configuration conf = context.getConfiguration();

  // Instantiate a copy of the user's class to hold and parse the record.
  String recordClassName = conf.get(
      ExportJobBase.SQOOP_EXPORT_TABLE_CLASS_KEY);
  if (null == recordClassName) {
    throw new IOException("Export table class name ("
        + ExportJobBase.SQOOP_EXPORT_TABLE_CLASS_KEY
        + ") is not set!");
  }

  try {
    Class cls = Class.forName(recordClassName, true,
        Thread.currentThread().getContextClassLoader());
    recordImpl = (SqoopRecord) ReflectionUtils.newInstance(cls, conf);
  } catch (ClassNotFoundException cnfe) {
    throw new IOException(cnfe);
  }

  if (null == recordImpl) {
    throw new IOException("Could not instantiate object of type "
        + recordClassName);
  }

  columnTypes = DefaultStringifier.load(conf, AVRO_COLUMN_TYPES_MAP,
      MapWritable.class);
}
Example 2
Source File: HalyardPreSplit.java    From Halyard with Apache License 2.0 5 votes vote down vote up 
@Override
protected void setup(Context context) throws IOException, InterruptedException {
    Configuration conf = context.getConfiguration();
    decimationFactor = conf.getInt(DECIMATION_FACTOR_PROPERTY, DEFAULT_DECIMATION_FACTOR);
    for (byte b = 1; b < 6; b++) {
        context.write(new ImmutableBytesWritable(new byte[] {b}), new LongWritable(1));
    }
    timestamp = conf.getLong(DEFAULT_TIMESTAMP_PROPERTY, System.currentTimeMillis());
}
Example 3
Source File: HalyardPreSplit.java    From Halyard with Apache License 2.0 4 votes vote down vote up 
@Override
protected void cleanup(Context context) throws IOException, InterruptedException {
    Configuration conf = context.getConfiguration();
    HalyardTableUtils.getTable(conf, conf.get(TABLE_PROPERTY), true, splits.toArray(new byte[splits.size()][])).close();
}