[Python-Dev] bsddb3 test hang
Zooko
zooko@zooko.com
22 Jul 2003 16:24:05 -0400
I wanted to see this bsddb3 explosion for myself, so I tried to build the
module, but couldn't figure out how to do it. So I opened a bug report under
the Build category:
[ 775850 ] pybsddb build fails
http://sourceforge.net/tracker/index.php?func=detail&aid=775850&group_id=5470&atid=105470
Regards,
Zooko
> [Tim]
> >> The evidence suggests there are still potentially catastrophic bugs
> >> in bsddb3!
>
> [martin@v.loewis.de]
> > So far, I have interpreted all failures in test_bsddb3 as being
> > related to the explicit use of transactions. Since the historic bsddb
> > module does not provide an interface for transactions, I have always
> > concluded that existing code won't be affected by these problems.
>
> I'm guessing we're talking about different things, then. These things have
> been discussed recently here:
>
> + Reports of bsddb3 database corruption in spambayes.
>
> + Likewise in Richie Hindle's multithreaded test driver, plus
> hardware faults.
>
> + Hangs and AssertionErrors in the tests from
> Lib/bsddb/test/test_thread.py.
>
> Richie's program uses only our wrapper's __delitem__, __setitem__ and
> __getitem__ implementations. spambayes does the same. While some tests in
> test_thread.py use transactions, the AssertionError Skip reported was in a
> test that does not use transactions:
>
> http://mail.python.org/pipermail/python-dev/2003-July/036920.html
>
> Fred and Barry also saw the same kind of AssertionErrors in
> SimpleThreadBase.writerThread, on the same line. Finally, the hangs Barry
> and I saw were in test02_SimpleLocks, which is also devoid of transactions.
>
> So I haven't seen any evidence of problems with transactions -- unless these
> things use transactions implicitly in some way.
>
>
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