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[Config] Document 'memtx' configuration settings #4038
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Please see my comments below.
One important thing regarding a new option for specifying a number of sorting threads: this option replaces the legacy approach when OpenMP threads are used to parallelize sorting:
https://www.tarantool.io/en/doc/latest/concepts/atomic/thread_model/#supplementary-threads
So, we also need to update this section to using a new option and mention that the value of OMP_NUM_THREADS
is still taken into account for backward compatibility (please double check).
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- Add `memtx` section in the Configuration reference - Add `memtx_sort_threads` option to the box.cfg reference and updated box.cfg reference - Add `In-memory storage` topic to the Configuration section - Update `Supplementary threads` topic and added a note about OpenMP threads deprecation - Fix some build warnings Fixes #4012 Fixes #3509
Fixes #4012
Fixes #3509