Do Not Automatically Create Log File when Not Asked to

[popescu-v]

Description

Currently, the KhiopsRunner.run method creates a temporary log file even when no log file has been requested by the user. This temporary file can be local or remote.

However, when the temporary log file is on a remote storage and for some reason the remote storage fails or the access to it is lost, then this log file is lost, and whence its contents cannot be shown to the user.

Questions/Ideas

• The solution is to let the user decide whether s.he wants to use a log file.
  • If no log file is specified by the user, then the Khiops execution log is listed on stdout, which is captured as usual and shown to the user (in the KhiopsRunner._report_exit_status method).