[UIMA-3664] DUCC RM - rounding error allocation shares

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1.0-Ducc
• Fix Version/s: 1.1.0-Ducc
• Component/s: DUCC
• Assignee: Jim Challenger
• Reporter: Jim Challenger
• Created: 03/Mar/14 19:37
• Updated: 05/May/14 17:48
• Resolved: 05/May/14 17:48

Description

During share counting on a cluster with a large spread of machine sizes (30G up to 256G), and there are a lot of requests for 30G shares, but only a few for 45G shares, the current code will make a rounding assumption that tends to starve the small, 45G job.

The code needs to change to round UP, not DOWN, if the math calculating qshares has a residual.