Thank you for your reply. The archived files can be used for PITR (Point-In-Time Recovery), allowing recovery to any point between WAL 80 and 100 on timeline 1. Additionally, if there's a backup taken during timeline 1 and a switchover to a new primary has occurred without taking a new full backup yet, these WAL logs can still be used to recover to any point on timeline 2.
Regards, Pixian Shi Adrian Klaver <adrian.kla...@aklaver.com> 于2025年8月8日周五 12:25写道： > On 8/7/25 20:20, px shi wrote: > > Hi, > > There is a scenario: the current timeline of the PostgreSQL primary node > > is 1, and the latest WAL file is 100. The standby node has also received > > up to WAL file 100. However, the latest WAL file archived is only file > > 80. If the primary node crashes at this point and the standby is > > promoted to the new primary, archiving will resume from file 100 on > > timeline 2. As a result, WAL files from 81 to 100 on timeline 1 will be > > missing from the archive. > > What are you planning to do with the archived files? > > Also is not the case that once the primary crashes you are in a split > brain case and can't really trust it's timeline anymore? > > > > Is there a good solution to prevent this situation? > > > > Regards, > > Pixian Shi > > > -- > Adrian Klaver > adrian.kla...@aklaver.com >
