| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Magnus Hagander <magnus(at)hagander(dot)net> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>, "Tsunakawa, Takayuki" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>, James Sewell <james(dot)sewell(at)jirotech(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Reaping Temp tables to avoid XID wraparound |
| Date: | 2019-02-13 17:05:18 |
| Message-ID: | 28398.1550077518@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Magnus Hagander <magnus(at)hagander(dot)net> writes:
> And while at it, what would in this particular case have been even more
> useful to the OP would be to actually identify that there is a temp table
> *and which xid it's blocking at*. For regular transactions we can look at
> backend_xid, but IIRC that doesn't work for temp tables (unless they are
> inside a transaction). Maybe we can find a way to expose that type of
> relevant information at a similar level while poking around that code?
Maybe I'm confused, but doesn't the table's pg_class row tell you what
you need to know? You can't look inside another session's temp table,
but you don't need to.
regards, tom lane
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