Re: all_visible replay aborting due to uninitialized pages - Mailing list pgsql-hackers

From Heikki Linnakangas
Subject Re: all_visible replay aborting due to uninitialized pages
Date
Msg-id 5267B3FF.1040008@vmware.com
Whole thread Raw
In response to Re: all_visible replay aborting due to uninitialized pages  (Andres Freund <andres@2ndquadrant.com>)
List pgsql-hackers
On 22.10.2013 14:14, Andres Freund wrote:
> Hi Robert, Heikki,
>
> On 2013-09-24 13:25:41 +0200, Andres Freund wrote:
>>> I'm afraid this patch was a few bricks shy of a load. The
>>> log_newpage_buffer() function asserts that:
>>>
>>>>     /* We should be in a critical section. */
>>>>     Assert(CritSectionCount>  0);
>>>
>>> But the call in vacuumlazy.c is not inside a critical section. Also, the
>>> comments in log_newpage_buffer() say that the caller should mark the buffer
>>> dirty *before* calling log_newpage_buffer(), but in vacuumlazy.c, it's
>>> marked dirty afterwards. I'm not sure what consequences that might have, but
>>> at least it contradicts the comment.
>>>
>>> (spotted this while working on a patch, and ran into the assertion on crash
>>> recovery)
>>
>> What about the attached patches (one for 9.3 and master, the other for
>> 9.2)? I've tested that I can trigger the assert before and not after by
>> inserting faults...
>
> Yould either of you commit those patches to the corresponding branches?

Committed, thanks.

- Heikki



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