Can not append distributed dataframes

[Norhk]

As the title says. Then appening distributed dataframes I get an error:

(The dataframe is distributed on a number of workers.)

ValueError: All inputs have known divisions which cannot be concatenated in order. Specify interleave_partitions=True to ignore order

Passing the argument yields unknown argument error.

dask version '0.19.4'

[mrocklin]

It looks like append hard-codes interleave_partitions while concat allows it.

@Norhk short term I recommend using concat

@TomAugspurger are there reasons not to allow interleaving when using append?

@Norhk if not would you be interested in submitting a small PR to fix? This should be fairly easy.

[Norhk]

Yes I will make a PR, give me 2 weeks (conference...). I will also test this further. The project is amazing!