issue_comments

The version that is working in @rabernat's esgf binder env is: libnetcdf 4.6.1 h9cd6fdc_11 conda-forge

I fired up my notebook on @rabernat's binder env and it worked fine also: https://nbviewer.jupyter.org/gist/rsignell-usgs/aebdac44a1d773b99673cb132c2ef5eb

@lesserwhirls , is this the issue you are referring to? https://github.com/Unidata/netcdf4-python/issues/836

@jhamman, doesn't this dask status plot tell us that multiple workers are connecting and getting data?

Perhaps it's also worth mentioning that I don't see any errors on the THREDDS server side on either the tomcat catalina or thredds threddsServlet logs. @lesserwhirls, any ideas?

FWIW, in my workflow there was nothing fundamentally wrong, meaning that the requests worked for a while, but eventually would die with the NetCDF: Malformed or inaccessible DAP DDS message.

So for just a short time period (in this case 50 time steps, 2 chunks in time), it would usually work: https://nbviewer.jupyter.org/gist/rsignell-usgs/1155c76ed3440858ced8132e4cd81df4

I tried a similar workflow last week with an AWS kubernetes cluster with opendap endpoints and it also failed: https://nbviewer.jupyter.org/gist/rsignell-usgs/8583ea8f8b5e1c926b0409bd536095a9

I thought it was likely some intermittent problem that wasn't handled well. In my case after a while I get: distributed.worker - WARNING - Compute Failed Function: getter args: (ImplicitToExplicitIndexingAdapter(array=CopyOnWriteArray(array=LazilyOuterIndexedArray(array=_ElementwiseFunctionArray(LazilyOuterIndexedArray(array=<xarray.backends.netCDF4_.NetCDF4ArrayWrapper object at 0x7ff93cbbd828>, key=BasicIndexer((slice(None, None, None), slice(None, None, None), slice(None, None, None), slice(None, None, None)))), func=functools.partial(<function _apply_mask at 0x7ff945421378>, encoded_fill_values={1e+37}, decoded_fill_value=nan, dtype=dtype('float64')), dtype=dtype('float64')), key=BasicIndexer((slice(None, None, None), slice(None, None, None), slice(None, None, None), slice(None, None, None)))))), (slice(375, 400, None), slice(0, 7, None), slice(0, 670, None), slice(0, 300, None))) kwargs: {} Exception: OSError(-72, 'NetCDF: Malformed or inaccessible DAP DDS')