@Override
public boolean allowSliceRetry(boolean abandon) {
boolean skipWriterCheck = !abandon && !context.emitCalled();
return (skipWriterCheck || out.allowSliceRetry()) && reducer.allowSliceRetry();
}
@Override
protected void callWorker(KeyValue<K, Iterator<V>> input) {
ReducerInput<V> value = ReducerInputs.fromIterator(input.getValue());
reducer.reduce(input.getKey(), value);
}
@Override
protected long estimateMemoryRequirement() {
return in.estimateMemoryRequirement()
+ getOutputWriter().estimateMemoryRequirement()
+ reducer.estimateMemoryRequirement();
}
private void fillContext() {
context = new ReducerContextImpl<>(getContext(), out);
in.setContext(context);
out.setContext(context);
reducer.setContext(context);
}