Client APIs
Numpy Import Multithreading
When making use of multi threading and fetching results either directly as Numpy arrays or indirectly through a Pandas DataFrame, it might be necessary to ensure that `numpy.core.multiarray` is imported.
If this module has not been imported from the main thread, and a different thread during execution attempts to import it this causes either a deadlock or a crash.  
To avoid this, it's recommended to `import numpy.core.multiarray` before starting up threads.