html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/pull/1489#issuecomment-338392039,https://api.github.com/repos/pydata/xarray/issues/1489,338392039,MDEyOklzc3VlQ29tbWVudDMzODM5MjAzOQ==,306380,2017-10-21T12:47:34Z,2017-10-21T12:47:34Z,MEMBER,"I think that you would want to rechunk the dask.array so that its chunks align with the outputs divisions of the dask.dataframe.  For example if you have a 2d array and are partitioning along the x-axis then you will want to align the array so that there is no chunking along the y axis.  In this case `set_index` will also be free because your data is already aligned and you already know (I think) the division values.
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