[MAPREDUCE-3764] AllocatedGB etc metrics incorrect if min-allocation-mb isn't a multiple of 1GB

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.1
• Component/s: mrv2
• Target Version/s: 0.23.1
• Assignee: Arun Murthy
• Reporter: Siddharth Seth
• Created: 30/Jan/12 23:21
• Updated: 05/Mar/12 02:48
• Resolved: 31/Jan/12 08:31

Description

MutableGaugeInt incremented as allocatedGB.incr(res.getMemory() / GB * containers);

Setting yarn.scheduler.capacity.minimum-allocation-mb to 1536 - each increment is counted as 1GB.
Trying to analyze the metrics - looks like the cluster is never over 67-68% utilized, depending on high ram requests.