[SYSTEMDS-1542] SystemML shouldn't enforce write statement need to be defined in all the if else branch

• Type: Story
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemDS 2.0
• Assignee: Unassigned
• Reporter: Alok Singh
• Created: 18/Apr/17 23:25
• Updated: 05/Feb/21 12:45
• Resolved: 05/Feb/21 12:45

Description

It seems like we have to define all the write cmd in all the possible systemML if else branch.

It could become very complicated for the nested function call to take this into account.

I think systemML should automatically insert write(file, empty_matrix) if the all the branches of the DAG doesn't contains the write statement

Note that in reference to the mlCtx, this pb manifest itself into big stack trace

Note that this bug is also related to https://issues.apache.org/jira/browse/SYSTEMML-1422

Issue Links

• Blocked: SYSTEMDS-1540 SystemML 1.0 plan for R4ML
• is related to: SYSTEMDS-1422 Step.GLM not working in MLContext mode