Re: Shutdown indefinitely stuck due to unflushed FPI_FOR_HINT record

On Mon, Mar 16, 2026 at 6:39 AM Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
> Since Tomas added GetXLogInsertEndRecPtr() in commit b1f14c96720,
> I updated the patch to use it. Patch attached.
> Barring any objections, I will commit it.
>
> - XLogFlush(GetXLogWriteRecPtr());
> + XLogFlush(GetXLogInsertEndRecPtr());

Thanks for the updated patch! I've run my test script against the
patch and there's no more "xlog flush request xxx is not satisfied"
errors reported.

> I excluded the above change from the patch because it seems like a separate
> issue. I also wonder whether this code could cause an error in XLogFlush()
> even when GetXLogWriteRecPtr() is used.

Ha right, I've mixed Insert and Write and thought that
FinishSyncWorker was also doing a XlogFlush(GetXLogInsertRecPtr())
when writing the patch. If I try to trigger the partial record issue,
GetXLogWriteRecPtr() points at the end of the WAL page containing the
beginning of the FPI_FOR_HINT, there's no attempt to flush in the
future. So FinishSyncWorker doesn't seem impacted by the issue.

Regards,
Anthonin Bonnefoy