feat: Edit the requests configuration pool_maxsize variable when initializing client

[lautarovc]

• Algolia Client Version: 2.4.0
• Language Version: Python 3.9.1

Description

I'm replicating a dataset (60k records) with 100 threads (Python's builtin ThreadExecutor) at a time. And I find that from time to time I keep getting these warnings from the 'requests' library: "Connection pool is full, discarding connection: xxxxxxxx.algolia.net".

The ability to edit the pool_maxsize configuration variable when initializing the search client would solve this kind of issues, perhaps even allowing to edit other requests configurations.

Steps To Reproduce

Initialize a ThreadExecutor of 100 max workers.
Create a function that uses 'save_object' to store a record in a predefined index.
Loop through thousands of records, for each record:
-Add the function that saves the record with the record data to the executor

You should get the warning every ~1000 records.

[rgs258]

I'm seeing the same thing. As a workaround, I'm initializing the client in the callable. Would love to see this taken up!