About "mysql driver unable to return result set for findzone query"

Hi, folks

I used DLZ plus mysql as the backend for bind, since it would make my
project more convenient for some web APIs(e.g. REST-style).
But since the bind got hang with "mysql driver unable to return result
set for findzone query" in the system log, so the DNS query from the
resolvers are gonna be failed.

I tried to make BIND running in single thread mode by specifying "-4
-n 1" in the options. The bind, currently, worked well.
I guess it might be caused by the mysql connection leak/starving for
multi-thread for DLZ.

Some basic configurations:

A VM on Xen, fedora-14, i386
bind-9.7.4-0.3.b1.fc14
mysql-5.1.58-1.fc14

I am just wondering if there are some available patches for the
multi-thread DLZ supports or I may have missed something out for the
latest version of DLZ.

Could anyone tell me something about that?
Great thanks.

Alfred

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RSA(R) Conference 2012