public RecordReader<Text, Text> getRecordReader(
InputSplit genericSplit, JobConf job, Reporter reporter) throws IOException {
reporter.setStatus(genericSplit.toString());
FileSplit split = (FileSplit) genericSplit;
final Path file = split.getPath();
FileSystem fs = file.getFileSystem(job);
FSDataInputStream fileIn = fs.open(split.getPath());
if (compressionCodecs != null && compressionCodecs.getCodec(file) != null)
throw new RuntimeException("Not handling compression!");
return new StreamXmlRecordReader(fileIn, split, reporter, job, FileSystem.get(job));
}
@SuppressWarnings("unchecked")
@Override
/**
* Instantiates a FileCollectionRecordReader using the specified spit (which is assumed to be a
* CombineFileSplit.
*
* @param genericSplit contains files to be processed, assumed to be a CombineFileSplit
* @param job JobConf of this job
* @param reported To report progress
*/
public RecordReader<Text, SplitAwareWrapper<Document>> getRecordReader(
InputSplit genericSplit, JobConf job, Reporter reporter) throws IOException {
reporter.setStatus(genericSplit.toString());
return new FileCollectionRecordReader(job, (PositionAwareSplit<CombineFileSplit>) genericSplit);
}
@Override
public RecordReader getRecordReader(InputSplit split, JobConf job, Reporter reporter) {
// try{ compatible with hadoop-0.14 TODO MC
reporter.setStatus(split.toString());
/*
} catch (IOException e) {
throw new RuntimeException("Cannot set status for reported:", e);
}
*/
// find part name
SegmentPart segmentPart;
final String spString;
try {
segmentPart = SegmentPart.get((FileSplit) split);
spString = segmentPart.toString();
} catch (IOException e) {
throw new RuntimeException("Cannot identify segment:", e);
}
try {
return new SequenceFileRecordReader(job, (FileSplit) split) {
@Override
public synchronized boolean next(Writable key, Writable value) throws IOException {
LOG.debug("Running OIF.next()");
MetaWrapper wrapper = (MetaWrapper) value;
try {
wrapper.set(getValueClass().newInstance());
} catch (Exception e) {
throw new IOException(e.toString());
}
boolean res = super.next(key, (Writable) wrapper.get());
wrapper.setMeta(SEGMENT_PART_KEY, spString);
return res;
}
@Override
public Writable createValue() {
return new MetaWrapper();
}
};
} catch (IOException e) {
throw new RuntimeException("Cannot create RecordReader: ", e);
}
}
@Override
public RecordReader<LongWritable, Text> getRecordReader(
InputSplit split, JobConf job, Reporter reporter) throws IOException {
reporter.setStatus(split.toString());
return new ExampleRecordReader(job, (FileSplit) split);
}
// constructor used by the old API
ESRecordReader(
org.apache.hadoop.mapred.InputSplit split, Configuration job, Reporter reporter) {
reporter.setStatus(split.toString());
init((ESInputSplit) split, job);
}
@Override
public RecordReader<LongWritable, Text> getRecordReader(
InputSplit split, JobConf conf, Reporter reporter) throws IOException {
reporter.setStatus(split.toString());
return new DeprecatedLzoLineRecordReader(conf, (FileSplit) split);
}