@Override
public BytesRefIterator iterator() throws IOException {
if (sorted == null) {
closeWriter();
sorted = Files.createTempFile(OfflineSorter.getDefaultTempDir(), "RefSorter-", ".sorted");
boolean success = false;
try {
sort.sort(input, sorted);
success = true;
} finally {
if (success) {
Files.delete(input);
} else {
IOUtils.deleteFilesIgnoringExceptions(input);
}
}
input = null;
}
return new ByteSequenceIterator(new OfflineSorter.ByteSequencesReader(sorted));
}
