RecDB query to recommender fails

[HarisChoudhary]

Hi,

I've created a recommender based off a table I have in the RecDB. My understanding is that when I run a recommending query after creating a recommender, RecDB automatically sees a created recommender and uses it for a faster response.

However, after creating a recommender and running a recommend query, I get the following error server side

select * from relations recommend anime_id to user_id on score using ItemCosCF where user_id = 499231 order by score desc limit 20;
LOG:  server process (PID 17044) was terminated by signal 11: Segmentation fault
DETAIL:  Failed process was running: select * from relations recommend anime_id to user_id on score using ItemCosCF where user_id = 499231 order by score desc limit 20;
LOG:  terminating any other active server processes
WARNING:  terminating connection because of crash of another server process
DETAIL:  The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
HINT:  In a moment you should be able to reconnect to the database and repeat your command.
FATAL:  the database system is in recovery mode
LOG:  all server processes terminated; reinitializing
LOG:  database system was interrupted; last known up at 2016-04-28 03:13:29 UTC
LOG:  database system was not properly shut down; automatic recovery in progress
LOG:  record with zero length at C/2257FB40
LOG:  redo is not required
LOG:  database system is ready to accept connections
LOG:  autovacuum launcher started

Could anyone kindly suggest what the problem might be? Thanks for your time.

[Skylion007]

This is on the database we were discussing earlier. Any thoughts @Sarwat? We will be happy to provide you with the necessary DB files to replicate this error.