Thanks much for the advice, Alex. Sounds like I'm probably best off sticking with 0.18.3 for right now, with an eye on upgrading to 0.20 soon.

Thanks again!

DR

Alex Loddengaard wrote:
0.19 is considered unstable by us at Cloudera and by the Y! folks; they
never deployed it to their clusters.  That said, we recommend 0.18.3 as the
most stable version of Hadoop right now.  Y! has (or will soon) deploy(ed)
0.20, which implies that it's at least stable enough for them to give it a
go.  Cloudera plans to support 0.20 as soon as a few more bugs get flushed
out, which will probably happen in its next minor release.

So anyway, that said, it might make sense for you to start with 0.20.0, as
long as you understand that the first major release usually is pretty buggy,
and is basically considered a beta.  If you're not willing to take the
stability risk, then I'd recommend going with 0.18.3, though the upgrade
from 0.18.3 to 0.20.X is going to be a headache (APIs changed, configuration
files changed, etc.).

Hope this is insightful.

Alex

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