Execute sql error


#1

Sometimes when I execute a sql, has not returned the results, as shown below:


At this point when I refresh Immerse again, it reported “unable to connect to Hostname or Port”! The error shown is shown below:

This time I had to restart the MapD server, re-enter Immerse and the implementation of the same sql statement, actually able to perform success and return the results, the results shown below:
Who can help with this problem? Thank you!


#2

Hi,

At the point you see the “Unable to connect to hostname or port” my suspicion is that the mapd server has crashed, please review the mapd_server.INFO log and jounrnalctl mapd_server (assuming you are running via systemd) to see what error message is being reported.

Please include the log and the error messages to help us debug.

regards