Thread: non-reproducible failure of random test on HEAD

I just did a checkout from HEAD (a few minutes ago) and ran this:
make distclean ; ./configure --prefix=/usr/local/pgsql-serializable
--enable-integer-datetimes --enable-debug --enable-cassert
--enable-depend --with-libxml && make check
I got a failure on the random test.  Unfortunately I didn't check
the log before typing:
make check
Nothing compiled or linked, but all tests passed.  I tried a couple
more times with everything passing.
This is 32-bit kubuntu 9.10 on a lenovo 8808-8NU, which has two
Intel(R) Pentium(R) D CPU 3.40GHz and 3GB RAM.

I have never seen this before. Is there something I should do to
follow up on it (other than not blowing away the evidence if I see
it again)?
-Kevin

"Kevin Grittner" <Kevin.Grittner@wicourts.gov> writes:
> I got a failure on the random test.

This used to be common.  Peter tweaked the test a few years ago to
reduce the probability of failure, but IIRC it's still not zero (and
probably can't be made zero without rendering the test meaningless).
I think most likely you just managed to hit the once-in-a-blue-moon
failure.
        regards, tom lane