Mnesia startup synchronization

Andre Nathan <>
Thu Jan 27 11:06:26 CET 2011


Hello

In the "Erlang and OTP in Action" book, there's a section explaining
Mnesia dynamic replication, where a node copies the tables from other
cluster nodes (when there are any) or starts up on its own otherwise.

In this section a race condition in this scheme is mentioned: two nodes
starting up simultaneously may believe that the other one was the first,
resulting in a deadlock where no initial schema is created.

What would be a proper way to add synchronization to mnesia startup to
ensure that a single node is always the first to run?

Thanks in advance
Andre



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