On Wed, Mar 1, 2017 at 10:29 PM, Thomas Munro <thomas.mu...@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 -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
