Re: New VACUUM FULL crashes on temp relations

From: Takahiro Itagaki <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: New VACUUM FULL crashes on temp relations
Date: 2010-02-02 05:28:32
Message-ID: 20100202142831.9A8A.52131E4D@oss.ntt.co.jp
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Takahiro Itagaki <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> wrote:

> > TRAP: FailedAssertion("!(typeNamespace == typ->typnamespace)", File:
> > "pg_type.c", Line: 658)

It comes from swapping toast relations:
DEBUG: typeNamespace mismatch: 99 (pg_toast) vs. 16386 (pg_toast_temp_2)

AFAICS, the assertion is broken, but the code is correct. We just need to
adjust the expression in the assertion.
Patch attached, including new regression tests for clustering a temp table.

> I see the same assertion failure on 8.4.2, too.

I'll go for backpatcting if the attached fix is correct. Comments welcome.

Regards,
---
Takahiro Itagaki
NTT Open Source Software Center

Attachment Content-Type Size
cluster_assert_20100202.patch application/octet-stream 2.3 KB

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