[SYSTEMDS-2981] Default blocksize in forced singlenode

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemDS 2.1
• Assignee: Matthias Boehm
• Reporter: Matthias Boehm
• Created: 24/May/21 20:30
• Updated: 04/Jun/21 21:14
• Resolved: 04/Jun/21 21:14

Description

Without the spark reblock, all blocksizes in singlenode remain 0, which requires robustness fixes all over the place. Instead we should properly set the blocksize, and use a dedicated in-memory reblock operation that similar to the existing special case for small data, just reads the matrix in.