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From Radim Kolar <...@filez.com>
Subject Re: max 1 mapper per node
Date Fri, 27 Apr 2012 05:38:24 GMT

> Do you want it so that the node can run only 1 mapper at a time but 
> the node can also run multiple reducers at the same time?
I currently want it per-application. Node can run more mappers/reducers 
from other jobs at same time.

>  Do you want it so that this particular application will only use that 
> node for a single mapper, but other applications may also run mappers 
> on the node?
yes. After this will be coded, i will rerun tests if it is sufficient 
for other types of tasks too.

For start, i would need per job settings - max mappers/reducers per 
node, so modifying AM would be enough.

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