* Bruce Momjian (br...@momjian.us) wrote: > On Tue, Jan 8, 2013 at 05:09:47PM -0500, Stephen Frost wrote: > > Greetings, > > > > We were surprised recently to note that the temp files that are > > created during a CREATE INDEX don't go into either a temp tablespace > > set for the user or into the tablespace which the CREATE INDEX > > specifies. Instead, they go only into base/pgsql_tmp/. This doesn't > > allow for any flexibility in defining where to create these > > potentially quite large sets of files. > > > > Shouldn't these temp files be going into the temp tablespace for the > > user creating the index instead..? Or perhaps into the tablespace > > which the index is being created in? > > Well, our docs for temp_tablespaces says: > > This variable specifies tablespaces in which to create temporary > objects (temp tables and indexes on temp tables) when a > <command>CREATE</> command does not explicitly specify a tablespace. > Temporary files for purposes such as sorting large data sets > are also created in these tablespaces. > > Are you saying this is inaccorate?
Yes and no? Are the temporary files created during a CREATE INDEX
considered "Temporary files for purposes such as sorting large data
sets"? My thinking is 'yes', but others may disagree. Also,
considering this a bug would imply that it's back-patchable and I'm not
convinced it's worth the risk of breaking things which depend on the
current behavior.
Thanks,
Stephen
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