AW: [HACKERS] 6.5 cvs: can't drop table - Mailing list pgsql-hackers

From ZEUGSWETTER Andreas IZ5
Subject AW: [HACKERS] 6.5 cvs: can't drop table
Date
Msg-id 219F68D65015D011A8E000006F8590C60267B375@sdexcsrv1.f000.d0188.sd.spardat.at
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List pgsql-hackers
> It bothers me that the GEQO results are not reliably reproducible
> across platforms; that complicates debugging.  I have been thinking
> about suggesting that we ought to change GEQO to use a fixed random
> seed value by default, with the variable random seed being available
> only as a *non default* option.  Comments anyone?
> 
A few platforms (e.g. AIX) have their own random implementation, so even
with
a fixed seed they produce different randoms than others :-(
It probably still helps iff behavior is predictable on the local machine.

But: I think we use rand for some security issue. We would'nt want to make 
that predictable.

Andreas


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