Data Flow Service stopped in Sagent

Issue

Data Flow Service is crashed while executing a plan with Analytical Calculator in Sagent.

Cause

This could be caused due to defect present before Sagent 6.8.8 where negative value used in Substr() functions inside Analytical Calculator Transform.

Resolution

UPDATED: September 19, 2019
It has been fixed in Sagent 6.8.8 so upgrading to Sagent 6.8.8 or a later release should resolve this.