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Vinod K V commented on MAPREDUCE-1167:
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Quickly looked at your patch. Few questions:
- Can you find out and put some details as to how standard is {{getconf}} command? Given
{{ProcfsBasedProcessTree}} is for Linux only, we are only concerned about Linux distributions.
I can find it on my Ubuntu dev box, but RHEL?
- I think we should keep track of rssmem everywhere in terms of bytes. This would inclue
ProcessInfo.rssMem;
- The behaviour when PAGESIZE is -ve should be changed. The patch gives out negative rss
sizes. Instead we should throw exceptions in {{ProcessInfo.getRss()}}, {{ProcfsBasedProcessTree.getCumulativeRssMem()}}
etc.
> Make ProcfsBasedProcessTree collect rss memory information
> ----------------------------------------------------------
>
> Key: MAPREDUCE-1167
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1167
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: tasktracker
> Affects Versions: 0.20.1
> Reporter: Scott Chen
> Attachments: MAPREDUCE-1167-v2.patch, MAPREDUCE-1167.patch
>
>
> Right now ProcfsBasedProcess collects only virtual memory. We can make it collect rss
memory as well.
> Later we can use rss in TaskMemoryManagerThread to obtain better memory management.
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