[NUTCH-2019] ClassPathException sending topN argument for /job/create using Nutch 2.x RESTApi

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.3
• Fix Version/s: 2.3.1
• Component/s: generator

Environment

Nutch 2.3

• Assignee: Lewis John McGibbney
• Reporter: Lewis John McGibbney
• Created: 21/May/15 18:24
• Updated: 13/Mar/24 14:51
• Resolved: 26/May/15 15:42

Description

As described [http://www.mail-archive.com/user%40nutch.apache.org/msg13549.html|here], the issues is as follows

Looking at the source I think it was caused by the following line:

topN = (Long) args.get(Nutch.ARG_TOPN);

I managed to get it temporarily "fixed" by replacing the above with the following:

try{

topN = (Long) args.get(Nutch.ARG_TOPN);
} catch(Exception e) {

topN = Long.parseLong(args.get(Nutch.ARG_TOPN).toString());
LOG.warn("Error: " + e + "test: " + args.get(Nutch.ARG_TOPN));
}

I guess it complains about ClassCastException because JSON stores the argument as int or string and not long.

Regards,
Alex