Not all arrays can be memmapped

[jnothman]

As reported by Anders Aagaard on scikit-learn-general, large arrays of dtype=object cannot be memmapped, but joblib attempts to.

[ogrisel]

Indeed, I don't see how numpy.memmap with dtype=object could possibly work although it seems to work based on a manual try in numpy 1.8.1...

Anyway I will open a PR to avoid automated memmaping on dtype=object arrays

[ogrisel]

Once PR #163 is merged I would like to release 0.8.3 with the bug fix an synchronize joblib in scikit-learn.

[GaelVaroquaux]

Once PR #163 is merged I would like to release 0.8.3 with the bug fix an
synchronize joblib in scikit-learn.

I agree: there are 2 bug fixes, and it's useful to have them. Do you have
time and Internet access to do the release in the next few days, or do
you want me to do it? (I can do it).

[ogrisel]

I have some internet access but feel to do the release if you can.

[GaelVaroquaux]

I have some internet access but feel to do the release if you can.

I have done the release and the backport to scikit-learn.

[ogrisel]

Thanks!