On 08.11.2013 19:14, Tom Lane wrote:
Heikki Linnakangas writes:
I came up with the attached fix. In a nutshell, when walking along a
right-link, the new page is locked before releasing the lock on the old
one. Also, never delete the leftmost branch of a posting tree. I believe
these changes are
Heikki Linnakangas writes:
> I came up with the attached fix. In a nutshell, when walking along a
> right-link, the new page is locked before releasing the lock on the old
> one. Also, never delete the leftmost branch of a posting tree. I believe
> these changes are sufficient to fix the proble
On 07.11.2013 22:49, Heikki Linnakangas wrote:
Gin page deletion fails to take into account that there might be a
search in-flight to the page that is deleted. If the page is reused for
something else, the search can get very confused.
...
The regular b-tree code solves this by stamping deleted
Gin page deletion fails to take into account that there might be a
search in-flight to the page that is deleted. If the page is reused for
something else, the search can get very confused.
That's pretty difficult to reproduce in a real system, as the window
between releasing a lock on page and
