How i got out-of-range in ThinMMapReader_c about manticoresearch

[tomatolog]

could you check your indexes with indextool to make sure these indexes are valid ?

[Lot-Art]

$ sudo indextool -c /etc/manticoresearch/manticore.conf --check la8_items_upcaft
Manticore 6.2.12 dc5144d35@230822 (columnar 2.2.4 5aec342@230822) (secondary 2.2.4 5aec342@230822)
Copyright (c) 2001-2016, Andrew Aksyonoff
Copyright (c) 2008-2016, Sphinx Technologies Inc (http://sphinxsearch.com)
Copyright (c) 2017-2023, Manticore Software LTD (https://manticoresearch.com)

using config file '/etc/manticoresearch/manticore.conf'...
checking table 'la8_items_upcaft'...
WARNING: failed to load RAM chunks, checking only 3 disk chunks
checking schema...
checking disk chunk, extension 0, 0(3)...
checking schema...
checking dictionary...
checking data...
checking rows...
checking attribute blocks index...
checking kill-list...
checking dead row map...
checking doc-id lookup...
check passed, 9.2 sec elapsed
checking disk chunk, extension 1, 1(3)...
checking schema...
checking dictionary...
checking data...
checking rows...
checking attribute blocks index...
checking kill-list...
checking dead row map...
checking doc-id lookup...
check passed, 9.6 sec elapsed
checking disk chunk, extension 2, 2(3)...
checking schema...
checking dictionary...
checking data...
checking rows...
checking attribute blocks index...
checking kill-list...
checking dead row map...
checking doc-id lookup...
check passed, 10.5 sec elapsed
check passed, 10.5 sec elapsed

and the files:

$ ll /var/lib/manticore/la8_items_upcaft -h
total 658M
drwxrwxrwx 2 manticore manticore 4.0K Apr 10 01:53 .
drwxrwxrwx 5 manticore manticore 4.0K Apr 10 05:20 ..
-rw------- 1 manticore manticore 120M Apr 10 02:45 la8_items_upcaft.0.spa
-rw------- 1 manticore manticore  91M Apr  9 12:32 la8_items_upcaft.0.spb
-rw------- 1 manticore manticore 187M Apr  9 12:32 la8_items_upcaft.0.spd
-rw------- 1 manticore manticore 5.3M Apr  9 12:32 la8_items_upcaft.0.spe
-rw------- 1 manticore manticore 2.6K Apr  9 12:32 la8_items_upcaft.0.sph
-rw------- 1 manticore manticore 174K Apr  9 12:32 la8_items_upcaft.0.sphi
-rw------- 1 manticore manticore 7.8M Apr  9 12:32 la8_items_upcaft.0.spi
-rw------- 1 manticore manticore 103M Apr  9 12:32 la8_items_upcaft.0.spidx
-rw------- 1 manticore manticore 158K Apr 10 07:46 la8_items_upcaft.0.spm
-rw------- 1 manticore manticore  78M Apr  9 12:32 la8_items_upcaft.0.spp
-rw------- 1 manticore manticore 6.5M Apr  9 12:32 la8_items_upcaft.0.spt
-rw------- 1 manticore manticore 4.8M Apr 10 02:26 la8_items_upcaft.1.spa
-rw------- 1 manticore manticore 3.8M Apr  9 17:10 la8_items_upcaft.1.spb
-rw------- 1 manticore manticore 7.3M Apr  9 17:10 la8_items_upcaft.1.spd
-rw------- 1 manticore manticore 178K Apr  9 17:10 la8_items_upcaft.1.spe
-rw------- 1 manticore manticore 2.6K Apr  9 17:10 la8_items_upcaft.1.sph
-rw------- 1 manticore manticore 131K Apr  9 17:10 la8_items_upcaft.1.sphi
-rw------- 1 manticore manticore 998K Apr  9 17:10 la8_items_upcaft.1.spi
-rw------- 1 manticore manticore 4.4M Apr  9 17:10 la8_items_upcaft.1.spidx
-rw------- 1 manticore manticore 6.3K Apr 10 06:16 la8_items_upcaft.1.spm
-rw------- 1 manticore manticore 3.1M Apr  9 17:10 la8_items_upcaft.1.spp
-rw------- 1 manticore manticore 266K Apr  9 17:10 la8_items_upcaft.1.spt
-rw------- 1 manticore manticore 7.3M Apr 10 02:27 la8_items_upcaft.2.spa
-rw------- 1 manticore manticore 5.6M Apr 10 01:27 la8_items_upcaft.2.spb
-rw------- 1 manticore manticore  12M Apr 10 01:27 la8_items_upcaft.2.spd
-rw------- 1 manticore manticore 282K Apr 10 01:27 la8_items_upcaft.2.spe
-rw------- 1 manticore manticore 2.6K Apr 10 01:27 la8_items_upcaft.2.sph
-rw------- 1 manticore manticore 139K Apr 10 01:27 la8_items_upcaft.2.sphi
-rw------- 1 manticore manticore 1.3M Apr 10 01:27 la8_items_upcaft.2.spi
-rw------- 1 manticore manticore 6.5M Apr 10 01:27 la8_items_upcaft.2.spidx
-rw------- 1 manticore manticore 9.6K Apr 10 07:46 la8_items_upcaft.2.spm
-rw------- 1 manticore manticore 4.9M Apr 10 01:27 la8_items_upcaft.2.spp
-rw------- 1 manticore manticore 403K Apr 10 01:27 la8_items_upcaft.2.spt
-rwxrwxrwx 1 manticore manticore    0 Apr 10 05:20 la8_items_upcaft.lock
-rw------- 1 manticore manticore 2.6K Apr 10 01:53 la8_items_upcaft.meta
-rw------- 1 manticore manticore   28 Apr 10 01:53 la8_items_upcaft.ram
-rw------- 1 manticore manticore   31 Apr 10 01:53 la8_items_upcaft.settings

A thought: I don't think OPTIMIZE items_all index is related to the breaking of the items_upcaft index. Because since my OP i observed the same behavior simply by manually doing:
FLUSH RTINDEX la8_items_upcaft;
FLUSH RAMCHUNK la8_items_upcaft;

[tomatolog]

could you provide your index as described in the manual Uploading-your-data ?

I'd like to issue FLUSH statement as you described and investigate the issue.

[Lot-Art]

Its a production server, so I had to delete and rebuild the index from scratch, so I don't have it anymore. Next time it happens i will attach the index too.