pgr_dijkstra working but pgr_ksp is returning empty an resultset

Question

This pgr_ksp function is not working, as answered in an earlier question

SELECT seq , id1 , id2 , cost FROM pgr_ksp(  
    'SELECT gid as id, fnode_ as source, tnode_ as target, length as cost 
     FROM road', 71670, 97745, 2, false) ;

I have tried all these solutions, but nothing works. Also there are no directions indicating possible restrictions that I could find.

pgr_dijkastra is working well with output.

SELECT seq, id1 AS node, id2 AS edge, cost,geom 
FROM 
   pgr_dijkstra('SELECT gid as id, fnode_ as source, tnode_ as target, length as cost 
                 FROM road',71670 , 97745,false, false)
 JOIN road ON pgr_dijkstra.id2 = road.gid ;

Answer 1

I am from the pgRouting developing team. Can you please put this in a new issue in: https://github.com/pgRouting/pgrouting/issues We need to reproduce your problem. We are about to launch pgrouting 2.2, and if there still an issue in pgr_ksp of version 2.1 we really like to fix it in the release. Thanks. Vicky