Xapian discuss - Jun 2005 - Quartzcompact in svn-6307 fails

Hi List,

I'm trying to test some of Olly's changes to the compaction of quartz, 
but appareantly quartzcompact just doesn't work at all, or of course my 
installation is bugged.

I've installed svn-6703 on a gentoo system which is quite up-to-date in 
terms of gcc (3.3)/glibc versions.

When I do quartzcompact on our (with 0.8.4) compacted database without 
any parameters it just says 'aborted' right after it started, with the 
-n and -F parameters the same.
But with -F and -n combined, it segfaults with this backtrace:

#0  0xb7cf6003 in memmove () from /lib/libc.so.6
#1  0xb7ee0cdc in Btree::compact (this=0xbfffe780, p=0x8057fa8 
"\004\026?\026?\026?\026?\026?\237") at btree.h:181
#2  0xb7ee15f0 in Btree::add_item (this=0xbfffe780, j=0) at btree.cc:832
#3  0xb7ee1b7f in Btree::add_kt (this=0xbfffe780, found=false) at 
btree.cc:998
#4  0xb7ee222f in Btree::add (this=0xbfffe780, key=@0xbfffe6b0, tag        
{static npos = 4294967295, _M_dataplus =
{<std::allocator<char>> = {<No data fields>}, _M_p = 0x9933604
"0??s?g\031\006???\237?]~k?\225%!?\022?\202[gz
\036z?8\036iG??x?_?9\b\ti?l-K\206P\022hBR(\001\212`\233\226\220\022\004\202a\215\220\202,\205V??\b\230\020?\004???]su?\003\207?cxA\f?~\"<?\n\030Q?}?(?\003?6f|?\222????}1y?\tx?:<.:\214'\022u?????
?\024?\223?+7?F\2360`\225\032\214?0E?\032|?\0036,\0057\004+_/\024y?\224?i\214?F`4\006\216X\207?L?S?\n\016.\t8\022\203?\002?]"...},
static _S_empty_rep_storage = {0, 0, 0, 0}}) at btree.cc:1152
#5  0x0804cd03 in main (argc=2, argv=0xbfffea44) at quartzcompact.cc:370

The aborted of course looks like this:
postlist ...Aborted

When I compact a test-database with a very simple set of data, 
quartzcompact does work, also with -F and -n.

Best regards,

Arjen

Hmm, appareantly the database wasn't transferred from the original 
machine to the development one correctly, I'll test it again and I don't
think you'd worry too much about this. Although the segfault should not 
occur of course.

Best regards,

Arjen

On 24-6-2005 9:49, Arjen van der Meijden wrote:
> Hi List,
> 
> I'm trying to test some of Olly's changes to the compaction of
quartz,
> but appareantly quartzcompact just doesn't work at all, or of course my
> installation is bugged.
> 
> I've installed svn-6703 on a gentoo system which is quite up-to-date in
> terms of gcc (3.3)/glibc versions.
> 
> When I do quartzcompact on our (with 0.8.4) compacted database without 
> any parameters it just says 'aborted' right after it started, with
the
> -n and -F parameters the same.
> But with -F and -n combined, it segfaults with this backtrace:
> 
> #0  0xb7cf6003 in memmove () from /lib/libc.so.6
> #1  0xb7ee0cdc in Btree::compact (this=0xbfffe780, p=0x8057fa8 
> "\004\026?\026?\026?\026?\026?\237") at btree.h:181
> #2  0xb7ee15f0 in Btree::add_item (this=0xbfffe780, j=0) at btree.cc:832
> #3  0xb7ee1b7f in Btree::add_kt (this=0xbfffe780, found=false) at 
> btree.cc:998
> #4  0xb7ee222f in Btree::add (this=0xbfffe780, key=@0xbfffe6b0, tag>    
{static npos = 4294967295, _M_dataplus = {<std::allocator<char>>
> = {<No data fields>}, _M_p = 0x9933604 
> "0??s?g\031\006???\237?]~k?\225%!?\022?\202[gz 
>
\036z?8\036iG??x?_?9\b\ti?l-K\206P\022hBR(\001\212`\233\226\220\022\004\202a\215\220\202,\205V??\b\230\020?\004???]su?\003\207?cxA\f?~\"<?\n\030Q?}?(?\003?6f|?\222????}1y?\tx?:<.:\214'\022u?????
>
?\024?\223?+7?F\2360`\225\032\214?0E?\032|?\0036,\0057\004+_/\024y?\224?i\214?F`4\006\216X\207?L?S?\n\016.\t8\022\203?\002?]"...},
> static _S_empty_rep_storage = {0, 0, 0, 0}}) at btree.cc:1152
> #5  0x0804cd03 in main (argc=2, argv=0xbfffea44) at quartzcompact.cc:370
> 
> The aborted of course looks like this:
> postlist ...Aborted
> 
> When I compact a test-database with a very simple set of data, 
> quartzcompact does work, also with -F and -n.
> 
> Best regards,
> 
> Arjen
> 
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