issue_comments: 438870575

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https://github.com/pydata/xarray/issues/1385#issuecomment-438870575 https://api.github.com/repos/pydata/xarray/issues/1385 438870575 MDEyOklzc3VlQ29tbWVudDQzODg3MDU3NQ== 30007270 2018-11-15T00:32:42Z 2018-11-15T00:32:42Z NONE

I can confirm that ds = xr.open_mfdataset(data_fnames,chunks={'lat':20,'time':50,'lon':24,'pfull':11},\ decode_cf=False) ds = xr.decode_cf(ds) is much faster (seconds vs minutes) than

``` ds = xr.open_mfdataset(data_fnames,chunks={'lat':20,'time':50,'lon':24,'pfull':11})

``` . For reference, data_fnames is a list of 5 files, each of which is ~75 GB.

 
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