Hi MADLib Users, I'm running MADLib on Greenplum 5.1.0 under Ubuntu 16.04. If I try to run the example for KMeanspp given here <http://madlib.apache.org/docs/latest/group__grp__kmeans.html>, I get the following error message:
NOTICE: Releasing segworker groups to finish aborting the transaction. ERROR: could not connect to segment: initialization of segworker group failed (cdbgang.c:236) CONTEXT: PL/Python function "internal_compute_kmeanspp_seeding" SQL statement "SELECT ( SELECT madlib.internal_compute_kmeanspp_seeding( '_madlib_kmeanspp_args', '_madlib_kmeanspp_state', textin(regclassout( $1 )), $2 ) )" PL/pgSQL function "kmeanspp_seeding" line 79 at assignment SQL statement "SELECT madlib.kmeans( $1 , $2 , madlib.kmeanspp_seeding( $1 , $2 , $3 , $4 , NULL, $5 ), $4 , $6 , $7 , $8 )" PL/pgSQL function "kmeanspp" line 4 at assignment I've tried running a few other built-in ML algorithms and they all seem to work fine. The error message seems to suggest its a problem with Greenplum, but some preliminary Googling has not yielded useful results. Has anyone seen this error before or have any ideas about how to diagnose it? Thanks, Anthony
