Sonarr: 126.96.36.19952 (Docker)
OS: CentOS 7
NZBGet (usenet) and NZB indexers.
I’ve noticed this behavior with single episode and season search.
Sonarr initiates episode/season search with one or more indexers.
Indexers may return 100+ results for the season or episode.
Dozens of the results meet the download criteria - profile/language/filters, etc.
Sonarr sends download requests to usenet client.
A download fails and instead of using other results already received from the indexer Sonarr runs the same search again. If multiple downloads fail Sonarr keeps sending searches instead of using available results. The multiple searches are returning the same results.
When using indexers which may have API limits this cycle can run up the counter rather quickly.