When creating an extract on a Mac, the following error might occur:
Tableau Data Engine Error 103: Too many open files system
Check the file limits:
The last two columns are the limits, how many files a given process can have open and how many files overall can be open.
If the limits are low, set them higher. The steps for changing the file limit are here: http://docs.basho.com/riak/kv/2.1.4/using/performance/open-files-limit/#mac-os-x
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