Re: [HACKERS] SPI_finish and RegisterExprContextCallback

[Thomas Hallgren]

I found another piece of information that might be of interest. This is 
related to nested calls and the ExprContextCallback but not related to 
nested active cursors.

AtCommitPortals (portalmem.c)  iterates over the entries in the 
PortalHashTable. This causes a chain of calls that sometimes reach an 
ExprContextCallback. If that callback issues a succesfull 
SPI_cursor_close some problems might lay ahead. As the AcCommitPortals 
iteration continues, it sometimes encounter a deleted portal and elogs 
with an error stating "trying to delete portal name that does not exist".

Regards,
Thomas Hallgren

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