| From: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
|---|---|
| To: | Amit Langote <amitlangote09(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andy Fan <zhihui(dot)fan1213(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: FailedAssertion("pd_idx == pinfo->nparts", File: "execPartition.c", Line: 1689) |
| Date: | 2020-08-07 04:05:55 |
| Message-ID: | 20200807040555.GD20473@telsasoft.com |
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| Lists: | pgsql-hackers |
On Fri, Aug 07, 2020 at 12:16:11PM +0900, Amit Langote wrote:
> Curiously, Justin mentioned upthread that the crash occurred during
> BIND of a prepared query, so it better had been that a custom plan was
> being executed, because a generic one based on fewer partitions would
> be thrown away due to A.I.M. invoked during AcquireExecutorLocks().
Well this statement should only be executed once, and should be using
PQexecParams and not PQexecPrepared (pygresql: pg.DB().query_prepared()).
(gdb) p portal->name
$30 = 0xf03238 ""
(gdb) p portal->prepStmtName
$31 = 0x0
(gdb) p *portal->cplan
$24 = {magic = 953717834, stmt_list = 0x682ec38, is_oneshot = false, is_saved = true, is_valid = true, planRoleId = 16554, dependsOnRole = false, saved_xmin = 0, generation = 1, refcount = 1, context = 0x682dfd0}
I'm not sure why is_oneshot=false, though...
--
Justin
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