I need to dump data from Nutch 2.3 into a WARC file. However, i couldn't find the necessary module. Nutch 1.x had this capability. I would like to know the proper way to do it.
As you said, at the moment the WARC exporter module is not yet ported to the 2.x branch of Nutch, nevertheless porting the https://github.com/apache/nutch/blob/master/src/java/org/apache/nutch/tools/warc/WARCExporter.java module shoudln't be that hard. As a general rule the 1.x branch of Nutch still is more used and better equiped than the 2.x branch (at least for now).