[SYSTEMDS-3141] New memory estimates underestimate size of ultra-sparse matrices

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemDS 2.2
• Assignee: Matthias Boehm
• Reporter: Matthias Boehm
• Created: 19/Sep/21 20:12
• Updated: 19/Sep/21 20:50
• Resolved: 19/Sep/21 20:50

Description

The recently changed memory estimates of matrix blocks, introduced a bug that misses the object reference for empty rows leading to severe underestimation of ultra-sparse matrices with many empty rows.