in.close();
LOG.info("index class: " + indexClass);
try {
sForwardIndex = new IndexableAnchorTextForwardIndex(new ClueWarcDocnoMapping());
sForwardIndex.loadIndex(new Path(indexFile), new Path(mappingFile), FileSystem.get(conf));
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("Error initializing forward index!");
}