[bind10-dev] b10-xfrin fails to receive IXFR while b10-xfrout is processing AXFR

[Michal 'vorner' Vaner]

Good morning

On Wed, Apr 03, 2013 at 04:56:37PM +0900, Yoshitaka Aharen wrote:
> It seems that b10-xfrout locks database while putting AXFR; thus
> b10-xfrin fails to acquire lock of database to update zone.
> 
> Is it a known issue?

The reverse problem is known (eg. any write operation locks the database and you
can't read it until the write is done). I guess the reverse has similar reasons,
simply you can't have a write and read operation running on the same table at
the same time. My guess is sqlite3 tries to wait a short time if the other
transaction ends and if not, it reports the database is locked. I don't think
there's much we can do about it, though, it's inside sqlite3 itself.

We need some solution for this, possibly supporting another database backend.

With regards

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Michal 'vorner' Vaner
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