Re: "ERROR: latch already owned" on gharial

Thomas Munro <thomas(dot)munro(at)gmail(dot)com> writes:
> Sorry for the ambiguity -- I have no evidence of miscompilation. My
> "just BTW" paragraph was a reaction to the memory of the last couple
> of times Noah and I wasted hours chasing red herrings on this system,
> which is pretty demotivating when looking into an unexplained failure.

I can't deny that those HPUX animals have produced more than their
fair share of problems.

> On a more practical note, I don't have access to the BF database right
> now. Would you mind checking if "latch already owned" has occurred on
> any other animals?

Looking back 6 months, these are the only occurrences of that string
in failed tests:

sysname | branch | snapshot | stage | l
---------+--------+---------------------+----------------+-------------------------------------------------------------------
gharial | HEAD | 2022-04-28 23:37:51 | Check | 2022-04-28 18:36:26.981 MDT [22642:1] ERROR: latch already owned
gharial | HEAD | 2022-05-06 11:33:11 | IsolationCheck | 2022-05-06 10:10:52.727 MDT [7366:1] ERROR: latch already owned
gharial | HEAD | 2022-05-24 06:31:31 | IsolationCheck | 2022-05-24 02:44:51.850 MDT [13089:1] ERROR: latch already owned
(3 rows)

regards, tom lane