Use multiple threads to insert stats in couchdb

[amCap1712]

Use a threadpool to split and insert stats in couchdb. 25% improvement in processing time.

[pep8speaks]

Hello @amCap1712! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file listenbrainz/spark/background.py:

Line 127:5: E303 too many blank lines (2)

• In the file listenbrainz/spark/spark_dataset.py:

Line 173:1: E305 expected 2 blank lines after class or function definition, found 1
Line 193:1: E305 expected 2 blank lines after class or function definition, found 1

Comment last updated at 2024-08-23 20:31:13 UTC