Hamilton Open Source

Is the `SynchronousLocalTaskExecutor` (with `Parallelizable/Collect`) pretty hit or miss?
Or do I jut happen to use it on odd file types (`xlsb`, `xlsm`).
For some reason it takes quite a long time &gt;15 for one file using the this executor.
I scaled it down to 1 file since the full batch was taking alarmingly long as a sanity check.

Could the speed issue be?
1. The file type (`xlsm`, `xlsb`) 
    a. The same transforms ran in &lt;1min for a single file without the executor.
2. The `SynchronousLocalTaskExecutor` needs a bit more understanding/setup to perform properly.


This is a good question for office hours — since I think pairing on the code would help clarify a few things.

Unless you can share the code :slightly_smiling_face:

Yeah office hours would probably sort it quicker.

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