Re: BUG #10542: infinite loop in index.c when trying to reindex system tables (probably corrupted db state)

Hi,

On 2014-06-05 23:00:56 +0000, hannes(dot)janetzek(at)gmail(dot)com wrote:
> While trying to get our database working again after a forced shutdown the
> reindexing of the system tables in single user mode went into an infinite
> loop.

what happened in that infinite loop? The log excerpt below doesn't show
one? Is it constantly echoing a message?

could you explain how you got into the bad state? Are you using
fsync=off?

> I can just roughly guess that between the lines:
> https://github.com/postgres/postgres/blob/REL9_3_STABLE/src/backend/catalog/index.c#L2260-
> L2385
> the function is assuming that another process tries to delete a tuple that
> is about to be indexed (even though in single user mode this should probably
> not be possible)

We've recently fixed a bug around that - but I don't immediately see how
it could be applicable in that scenario.

Greetings,

Andres Freund

--
Andres Freund http://www.2ndQuadrant.com/
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