On Fri, Feb 6, 2015 at 6:35 PM, Syed, Rahila wrote:
> The compression patch can  use the latest interface 
> MemoryContextAllocExtended to proceed without compression when sufficient 
> memory is not available for
> scratch buffer.
> The attached patch introduces OutOfMem flag which is set on when 
> MemoryContextAllocExtended returns NULL .

TBH, I don't think that brings much as this allocation is done once
and process would surely fail before reaching the first code path
doing a WAL record insertion. In any case, OutOfMem is useless, you
could simply check if compression_scratch is NULL when assembling a

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