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HyperThreading in TaskTracker nodes?

Question asked by thealy on Feb 4, 2013
Latest reply on Feb 4, 2013 by mandoskippy
I would like to get some opinions / recommendations about the pros and cons of enabling HyperThreading on TaskTracker nodes. Presumably memory could be an issue, but is there anything to be gained, perhaps because of I/O wait? My small M# cluster is made of relatively slow and old systems, which mostly are quite slow to/from disk, if that matters.

[Apologies to those on hadoop mailing list; I'm not sure if the equation changes under MapR

Thanks,

Terry

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