On 12/23/21, 3:17 AM, "Bharath Rupireddy" <bharath.rupireddyforpostg...@gmail.com> wrote: > Currently the end-of-recovery checkpoint can be much slower, impacting > the server availability, if there are many replication slot files > XXXX.snap or map-XXXX to be enumerated and deleted. How about skipping > the .snap and map- file handling during the end-of-recovery > checkpoint? It makes the server available faster and the next regular > checkpoint can deal with these files. If required, we can have a GUC > (skip_replication_slot_file_handling or some other better name) to > control this default being the existing behavior.
I suggested something similar as a possibility in the other thread where these tasks are being discussed [0]. I think it is worth considering, but IMO it is not a complete solution to the problem. If there are frequently many such files to delete and regular checkpoints are taking longer, the shutdown/end-of-recovery checkpoint could still take a while. I think it would be better to separate these tasks from checkpointing instead. Nathan [0] https://postgr.es/m/A285A823-0AF2-4376-838E-847FA4710F9A%40amazon.com
