Why is qsearch_process_queue taking so long?

A recurring request to qsearch_process_queue, or any request to qsearch_process_queue, may take longer than the dispatcher timeout period as it might have a lot of data to process.

The dispatcher assumes that the old request was finished, and launches a new qsearch_process_queue request for any new incoming request. This causes more than one qsearch_process_queue request to be processed at the same time, leading to locking contention, and subsequent problems with spatial index updates.

To avoid this, it is advised to set the timeout period for dispatcher to a high value.