[Building Sakai] Possible Bug in Sakai 2.6.3 and 2.6.x

[Clifton Dildy]

We believe we have discovered the cause of the behavior reported in my 
previous email, entitled " Assignments Tool Download All and Release 
Grades Link".  The Department of Computer Science, at the University of 
Victoria, removes student accounts from our LDAP server if a student 
drops their only CS Course and is no longer enrolled in a Computer Science.

Bulk Assignment download and Release All Grades will quietly fail if an 
instructor attempts to "Download All" or "Release Grades"  with "All 
Sections/Groups" selected if a student has submitted the assignment 
prior to dropping the course, generating an incomplete list of student 
assignments or grades.   Sakai does not generate an error in the browser 
or catalina logs, the download files are just missing most of the 
student assignments or grades.

By examining the database entries in the ASSIGNMENT_SUBMISSION table, we 
have been able to determine that the "download all" functions fails at 
the first occurrence of a assignment submission where a student who 
submitted an assignment has dropped the course.  In testing, if we 
manually re-populate an LDAP entry for the dropped student and re test, 
then the download will successfully continue to the next incident of a 
student who dropped the course and submitted an assignment.

This behavior only occurs with "All Sections/Groups".  If only a single 
section is selected Sakai appears to correctly filter the assignment 
results using the current active list of course participants.  It also 
does not affect the Instructors view of all submitted assignments in the 
web browser.

The problem is impacting our largest first year courses where we have 
the most students who may only be enrolled in a single CS course.  We 
are assessing the impact of changing our account deletion policies; 
however that will impact other systems dependent on student enrollment  
data.

We are hoping that we can find a solution for Sakai that it would not 
attempt to download assignments for students no longer enrolled in the 
course.

Any help would be appreciated .