Hi Fujii, On Mon, Nov 9, 2026 at 7:40 PM Fujii Masao <[email protected]> wrote: > HINT: Make sure WAL summarization is enabled. Consider using a more > recent backup as the basis for this incremental backup, > or taking a new full backup.
Your wording is better, and the more recent backup option works. In the five ways I found to hit this error, a full backup taken after the missing summaries was a good basis: the incremental backup succeeded and the combined cluster started with all rows, 22 of 22 runs. A backup from before them failed with the same error in all 22 runs that had missing summaries, and each time the DETAIL's LSN fell between the two backups' start LSNs. With your hint applied to master it builds without warnings, and pg_combinebackup's TAP test 007 passes. One note on the first sentence: with summarize_wal off, the request fails earlier with "incremental backups cannot be taken unless WAL summarization is enabled" (3 of 3), so whoever sees this hint already has it enabled and the sentence can only be about the past. Regards, Manu
