|From:||Jeff Davis <pgsql(at)j-davis(dot)com>|
|Subject:||Re: 9.5: Memory-bounded HashAgg|
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On Thu, 2014-12-11 at 02:46 -0800, Jeff Davis wrote:
> On Sun, 2014-08-10 at 14:26 -0700, Jeff Davis wrote:
> > This patch is requires the Memory Accounting patch, or something similar
> > to track memory usage.
> > The attached patch enables hashagg to spill to disk, which means that
> > hashagg will contain itself to work_mem even if the planner makes a
> > bad misestimate of the cardinality.
> New patch attached. All open items are complete, though the patch may
> have a few rough edges.
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