How to use

getRuntimeContext

method

in

org.apache.flink.hadoopcompatibility.mapred.HadoopReduceCombineFunction

@SuppressWarnings("unchecked")
@Override
public void open(Configuration parameters) throws Exception {
  super.open(parameters);
  this.reducer.configure(jobConf);
  this.combiner.configure(jobConf);
  this.reporter = new HadoopDummyReporter();
  Class<KEYIN> inKeyClass = (Class<KEYIN>) TypeExtractor.getParameterType(Reducer.class, reducer.getClass(), 0);
  TypeSerializer<KEYIN> keySerializer = TypeExtractor.getForClass(inKeyClass).createSerializer(getRuntimeContext().getExecutionConfig());
  this.valueIterator = new HadoopTupleUnwrappingIterator<>(keySerializer);
  this.combineCollector = new HadoopOutputCollector<>();
  this.reduceCollector = new HadoopOutputCollector<>();
}

@SuppressWarnings("unchecked")
@Override
public void open(Configuration parameters) throws Exception {
  super.open(parameters);
  this.reducer.configure(jobConf);
  this.combiner.configure(jobConf);
  this.reporter = new HadoopDummyReporter();
  Class<KEYIN> inKeyClass = (Class<KEYIN>) TypeExtractor.getParameterType(Reducer.class, reducer.getClass(), 0);
  TypeSerializer<KEYIN> keySerializer = TypeExtractor.getForClass(inKeyClass).createSerializer(getRuntimeContext().getExecutionConfig());
  this.valueIterator = new HadoopTupleUnwrappingIterator<>(keySerializer);
  this.combineCollector = new HadoopOutputCollector<>();
  this.reduceCollector = new HadoopOutputCollector<>();
}

@SuppressWarnings("unchecked")
@Override
public void open(Configuration parameters) throws Exception {
  super.open(parameters);
  this.reducer.configure(jobConf);
  this.combiner.configure(jobConf);
  this.reporter = new HadoopDummyReporter();
  Class<KEYIN> inKeyClass = (Class<KEYIN>) TypeExtractor.getParameterType(Reducer.class, reducer.getClass(), 0);
  TypeSerializer<KEYIN> keySerializer = TypeExtractor.getForClass(inKeyClass).createSerializer(getRuntimeContext().getExecutionConfig());
  this.valueIterator = new HadoopTupleUnwrappingIterator<>(keySerializer);
  this.combineCollector = new HadoopOutputCollector<>();
  this.reduceCollector = new HadoopOutputCollector<>();
}

@SuppressWarnings("unchecked")
@Override
public void open(Configuration parameters) throws Exception {
  super.open(parameters);
  this.reducer.configure(jobConf);
  this.combiner.configure(jobConf);
  this.reporter = new HadoopDummyReporter();
  Class<KEYIN> inKeyClass = (Class<KEYIN>) TypeExtractor.getParameterType(Reducer.class, reducer.getClass(), 0);
  TypeSerializer<KEYIN> keySerializer = TypeExtractor.getForClass(inKeyClass).createSerializer(getRuntimeContext().getExecutionConfig());
  this.valueIterator = new HadoopTupleUnwrappingIterator<>(keySerializer);
  this.combineCollector = new HadoopOutputCollector<>();
  this.reduceCollector = new HadoopOutputCollector<>();
}