issues: 327893262

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
327893262 MDU6SXNzdWUzMjc4OTMyNjI= 2203 Update minimum version of dask 2443309 closed 0     6 2018-05-30T20:47:57Z 2018-07-08T00:55:32Z 2018-07-08T00:55:32Z MEMBER      

Xarray currently states that it supports dask version 0.9 and later. However, 1) I don't think this is true and my quick test shows that some of our tests fail using dask 0.9, and 2) we have a growing number of tests that are being skipped for older dask versions:

$ grep -irn "dask.__version__" xarray/tests/*py xarray/tests/__init__.py:90: if LooseVersion(dask.__version__) < '0.18': xarray/tests/test_computation.py:755: if LooseVersion(dask.__version__) < LooseVersion('0.17.3'): xarray/tests/test_computation.py:841: if not use_dask or LooseVersion(dask.__version__) > LooseVersion('0.17.4'): xarray/tests/test_dask.py:211: @pytest.mark.skipif(LooseVersion(dask.__version__) <= '0.15.4', xarray/tests/test_dask.py:223: @pytest.mark.skipif(LooseVersion(dask.__version__) <= '0.15.4', xarray/tests/test_dask.py:284: @pytest.mark.skipif(LooseVersion(dask.__version__) <= '0.15.4', xarray/tests/test_dask.py:296: @pytest.mark.skipif(LooseVersion(dask.__version__) <= '0.15.4', xarray/tests/test_dask.py:387: if LooseVersion(dask.__version__) == LooseVersion('0.15.3'): xarray/tests/test_dask.py:784: pytest.mark.skipif(LooseVersion(dask.__version__) <= '0.15.4', xarray/tests/test_dask.py:802: pytest.mark.skipif(LooseVersion(dask.__version__) <= '0.15.4', xarray/tests/test_dask.py:818:@pytest.mark.skipif(LooseVersion(dask.__version__) <= '0.15.4', xarray/tests/test_variable.py:1664: if LooseVersion(dask.__version__) <= LooseVersion('0.15.1'): xarray/tests/test_variable.py:1670: if LooseVersion(dask.__version__) <= LooseVersion('0.15.1'):

I'd like to see xarray bump the minimum version number of dask to something around 0.15.4 (Oct. 2017) or 0.16 (Nov. 2017).

cc @mrocklin, @pydata/xarray 

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