PostgreSQL 12 zero sized wal archive logs issue during recovery

Question

I am having this issue with the PostgreSQL database running using DAS disks. I have enabled Archive logs on the PostgreSQL configuration. When the server crashes I see a lot of zero-sized WAL archive logs getting created as seen in the picture below. What is the recovery process as PostgreSQL complains it is not 16MB in size. So I tried deleting or filling it to 16MB size to do the recovery. It seems to be working fine but is this a correct process to do the recovery. Any insights would be really appreciated. Have you any of you faced this problem before? I have raised a bug with PostgreSQL as well regarding the same.

PostgreSQL zero-sized WAL logs:

Answer 1

You probably ran out of disk space.

At any rate, PostgreSQL will bemoan these WAL segments and stop recovering before the first one, which is the right thing to do.