Looks like what I was doing was:

String loc = ((FileSplit) ((Supplier<InputSplit>) ((MapContext)
      this.getContext()).getInputSplit()).get()).getPath().toString();
I believe this was occurring on combined files, but it’s been awhile, so I am not 100% sure.

From: Marcin Michalski [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 10, 2016 1:22 PM
To: [EMAIL PROTECTED]
Subject: Re: Figuring out to which CombineFileSplit the input record of DoFn process each record belongs to

I have taken a look but don't see anything that would give me access to the input record's dir location.  Could you point me in the right direction?

On Nov 9, 2016, at 7:50 PM, David Ortiz <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
I can look up the exact methods in the morning, but in short, the DoFn does have a way to grab the TaskContext object when running using MapReduce.  From there you can get the split.

Sent from my Verizon Wireless 4G LTE DROID
On Nov 9, 2016 9:56 PM, Marcin Michalski <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
Hi, is it possible to tie each record from DoFn's process method's to the single input split from CombinedFileSplit? I basically want to get some info from the input HDFS directory of the input split (/data/20161109/11) and use it to enhance a each record that is being read by process method. I was able to hack the access issue of CrunchInputSplit by using reflection but then I am not sure how to tie each input record to one input split since my job reads multiple files from different directories that have date/hour information that I need.
@Override
 public void process(GenericData.Record eventRecord, Emitter<Pair<String, GenericData.Record>> pairEmitter) {
    if(getContext() instanceof MapContext) {
                InputSplit inputSplit = ((MapContext) getContext()).getInputSplit();
                Class<? extends InputSplit> splitClass = inputSplit.getClass();

                try {
                    Method getInputSplitMethod = splitClass
                            .getDeclaredMethod("get");
                    getInputSplitMethod.setAccessible(true);
                    CombineFileSplit fileSplit = (CombineFileSplit) getInputSplitMethod.invoke(inputSplit);

                    System.out.println("number of input files: " + fileSplit.getPaths().length);
                    int index = 0;
                    for(Path p: fileSplit.getPaths()) {
                        System.out.println("split length: " + fileSplit.getLength(index) + " partition: "
                                + getPartitionDt(fileSplit.getPath(index)));
                        index ++;
                    }
                } catch (Exception e) {
                    System.out.println("we have a problem");
                    e.printStackTrace();
                }
            }
        }

...now I want to output a pair of of Partition info YYYYMMDDHH and some modified avro record. Any idea how I can get the directory information of the inputsplit that is being processed by each call of the process method?
...
emit(Pair.of(partition, some_avro_record)));

I know that I could disable the combined input file format but I don't want to do that

Thanks!
Marcin Michalski | Big Data Engineer
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