[erlang-questions] Mnesia

ok <>
Thu Oct 15 07:16:18 CEST 2015


According to http://www.erlang.org/faq/mnesia.html
"Dets uses 32 bit integers for file offsets,
so the largest possible mnesia table (for now) is 4Gb".
There is nothing there about the limits being different
for in memory vs on disc.
Poke around a bit more and you will find explicit claims
that this limit applies both to disc only and to disc copies,
e.g., "disc_copies tables are limited by their dets backend".
You will also find the figures of 2GB and 3GB floating around.

One thing that would be really nice would have to have
accurate current limits prominently signposted (not necessarily
*displayed*, just pointed to will do) near the beginning of the
Mnesia manual.

I've had serious problems with the Mnesia documentation in the
past, so I'm quite prepared to believe that I have my facts
totally wrong.




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