Make db_direct_access the default #4129
Merged
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See issue #3088
The most (only?) robust way to avoid database corruption during IO saturation is to run with the
db_direct_accesssetting. This makes the rocksdb plugin use rocksdb transactions rather than mnesia transactions. This ensures atomicity in the case when writes are rejected due to congestion.This is an initial push, partly to ensure that we don't forget to make this the detault.