Migration challanges from sphinx 3.3.1 to manticore 6.2.12.

[B.JEGADEESAN]

We had piler version 1.4.4 and manticore version 6.2.12.

After following your guidance, we successfully removed the sphinx packages and files, as well as the /var/piler/sphinx directory. Subsequently, we installed the Manticore packages and made all the necessary configuration changes according to the documentation.
Upon starting the Piler service, it initiated without any issues. However, when attempting to start the Searchd service, we encountered the following error. Despite this error, the Searchd service is up and running, but the web UI does not display any emails.

ERROR:

starting searchd . . .
Manticore 6.2.12 dc5144d35@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))

[05:13.857] [2024] using config file '/usr/local/etc/piler/manticore.conf' (3752 chars)...
[05:13.860] [2024] WARNING: secondary_indexes set but failed to initialize secondary library: (null)
starting daemon version '6.2.12 dc5144d35@230822' ...
listening on 127.0.0.1:9312 for sphinx and http(s)
listening on 127.0.0.1:9306 for mysql
precaching table 'piler1'
Index meta format is not json, will try it as binary...
WARNING: Unable to load header... Error can't load an old table with SBCS tokenizer
WARNING: table 'piler1': prealloc: can't load an old table with SBCS tokenizer - NOT SERVING
precaching table 'tag1'
Index header format is not json, will try it as binary...
WARNING: Unable to load header... Error failed to open /var/piler/manticore/tag1.sph: No such file or directory
WARNING: table 'tag1': prealloc: failed to open /var/piler/manticore/tag1.sph: No such file or directory - NOT SERVING
precaching table 'note1'
Index header format is not json, will try it as binary...
WARNING: Unable to load header... Error failed to open /var/piler/manticore/note1.sph: No such file or directory
WARNING: table 'note1': prealloc: failed to open /var/piler/manticore/note1.sph: No such file or directory - NOT SERVING

[Janos SUTO]

Make sure, the shipped manticore service is disabled. You need to run the piler shipped pilersearch service. Then remove everything from /var/piler/manticore dir, and start it again.