Failure to execute cql script using cqlsh with nested SOURCE on DSE 5.1.2 - cassandra

Question

I have a script I used to execute queries and DDL in DSE 4.8.10.
The script include nested use of the SOURCE command.
E.g.
1.sql
USE test;
SOURCE '2.sql'
exit;
2.sql
SELECT count(1) FROM user;
SOURCE '3.sql';
3.sql
SELECT count(1) FROM user;
When executing this script with DSE 4.8.10 it runs correctly and output
cqlsh –f 1.sql
count
--------
0
(1 rows)
count
--------
0
(1 rows)
Running the same script in DSE 5.1.2.
cqlsh –f 1.sql
count
-------
0
(1 rows)
Warnings :
Aggregation query used without partition key
2.sql:3:DSEShell instance has no attribute 'execution_profiles'
The actual issue is that the script in 3.sql is not executed.
I failed to find any useful information on the error
"DSEShell instance has no attribute 'execution_profiles'"
I failed to figure out what are execution_profiles although they are mentioned int the python docs here
Note: I am using python 2.7.7
Update
I did some additional investigations
With DSE-5.1.2 I switch the off to authenticator: AllowAllAuthenticator
authorizer: AllowAllAuthorizer, but I am still experiencing the issue
With DSE-5.1.1 it also happens
With DSE-5.0.9 it works
I failed to reproduce this in Apache Cassandra 3.11.0
Update 2: following support ticket we posted for Datastaxs we got a patch for this issue, I guess we should be expecting this to be fixed in the near feature.

Answer 1

As from DSE 5.1.4 this issue was resolved as part of DSP-14494.
See the 5.1.4 release notes
DSP-14494:Always define execution_profiles in cqlsh.py.
I tested this with 5.1.4 and the issue was resolved.