HELP-57227 involved a shutdown that took ~4minutes. We should improve the WiredTiger logs to make it clear what is occurring during shutdown. The logs from the HELP ticket show:

{"t":{"$date":"2024-02-22T05:09:06.579+00:00"},"s":"I",  "c":"STORAGE",  "id":4795902, "ctx":"thread695221","msg":"Closing WiredTiger","attr":{"closeConfig":"leak_memory=true,"}}
{"t":{"$date":"2024-02-22T05:12:07.931+00:00"},"s":"I",  "c":"STORAGE",  "id":4795901, "ctx":"thread695221","msg":"WiredTiger closed","attr":{"durationMillis":181352}}

With no WiredTiger logs in between.

One question that was raised was:
Is checkpoint initiated by WT as part of shutdown?

We should ensure the logs make this clear and possibly add logs to indicate if checkpoint is taking a long time due to the amount of dirty content.