On Wed, Mar 1, 2017 at 10:29 PM, Thomas Munro
<thomas.munro@enterprisedb.com> wrote:
> I'm testing a patch that lets you set up a fixed sized
> SharedBufFileSet object in a DSM segment, with its own refcount for
> the reason you explained. It supports a dynamically expandable set of
> numbered files, so each participant gets to export file 0, file 1,
> file 2 and so on as required, in any order. I think this should suit
> both Parallel Tuplesort which needs to export just one file from each
> participant, and Parallel Shared Hash which doesn't know up front how
> many batches it will produce. Not quite ready but I will post a
> version tomorrow to get Peter's reaction.
See 0007-hj-shared-buf-file-v6.patch in the v6 tarball in the parallel
shared hash thread.
--
Thomas Munro
http://www.enterprisedb.com
