Re: [HACKERS] Parallel tuplesort (for parallel B-Tree index creation)

On Fri, Feb 2, 2018 at 10:38 AM, Peter Geoghegan <pg@bowt.ie> wrote:
> On Fri, Feb 2, 2018 at 10:37 AM, Robert Haas <robertmhaas@gmail.com> wrote:
>> If you could keep an eye on the buildfarm and investigate anything
>> that breaks, I would appreciate it.

> I can keep an eye on it throughout the day.

There is a benign Valgrind error that causes the lousyjack animal to
report failure. It looks like this:

==6850== Syscall param write(buf) points to uninitialised byte(s)
==6850==    at 0x4E4D534: write (in /usr/lib64/libpthread-2.26.so)
==6850==    by 0x82328F: FileWrite (fd.c:2017)
==6850==    by 0x8261AD: BufFileDumpBuffer (buffile.c:513)
==6850==    by 0x826569: BufFileFlush (buffile.c:657)
==6850==    by 0x8262FB: BufFileRead (buffile.c:561)
==6850==    by 0x9F6C79: ltsReadBlock (logtape.c:273)
==6850==    by 0x9F7ACF: LogicalTapeFreeze (logtape.c:906)
==6850==    by 0xA05B0D: worker_freeze_result_tape (tuplesort.c:4477)
==6850==    by 0xA05BC6: worker_nomergeruns (tuplesort.c:4499)
==6850==    by 0x9FCA1E: tuplesort_performsort (tuplesort.c:1823)

I'll need to go and write a Valgrind suppression for this. I'll get to
it later today.

-- 
Peter Geoghegan