| From: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
|---|---|
| To: | Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de> |
| Subject: | PathNameCreateTemporaryDir() vs concurrency |
| Date: | 2017-12-26 11:11:22 |
| Message-ID: | CAEepm=1Vp1e3KtftLtw4B60ZV9teNeKu6HxoaaBptQMsRWjJbQ@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-hackers |
Hi hackers,
While testing parallel hash join today, I saw a couple of errors like this:
2017-12-26 23:34:37.402 NZDT [13082] ERROR: cannot create temporary
subdirectory "base/pgsql_tmp/pgsql_tmp13080.0.sharedfileset": File
exists
There is a thinko in PathNameCreateTemporaryDir(), a new function
added in commit dc6c4c9d. It was designed to tolerate directories
existing already but forgot to handle it in the third mkdir call, so
it fails with unlucky timing. Please see attached.
--
Thomas Munro
http://www.enterprisedb.com
| Attachment | Content-Type | Size |
|---|---|---|
| fix-named-tempdir-create.patch | application/octet-stream | 1.0 KB |
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