issue_comments: 639111588

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https://github.com/pydata/xarray/issues/4082#issuecomment-639111588 https://api.github.com/repos/pydata/xarray/issues/4082 639111588 MDEyOklzc3VlQ29tbWVudDYzOTExMTU4OA== 1872600 2020-06-04T20:55:49Z 2020-06-04T20:55:49Z NONE

@EliT1626 , I confirmed that this problem exists on Windows, but not on Linux.

The error: IOError: [Errno -37] NetCDF: Write to read only: 'https://www.ncei.noaa.gov/thredds/dodsC/OisstBase/NetCDF/V2.1/AVHRR/201703/oisst-avhrr-v02r01.20170304.nc' suggested some kind of cache problem, and as you noted it always fails after a certain number of dates, so I tried increasing the number of cached files from the default 128 to 256: xr.set_options(file_cache_maxsize=256) but that had no effect.

Just to see if it would fail earlier, I then tried decreasing the number of cached files: xr.set_options(file_cache_maxsize=10) and to my surprise, it ran all the way through: https://nbviewer.jupyter.org/gist/rsignell-usgs/c52fadd8626734bdd32a432279bc6779

I'm hoping someone who worked on the caching (@shoyer?) might have some idea of what is going on, but at least you can execute your workflow now on windows! 

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