Bring this into line with standard SQLite WAL checkpoint threshold.
See https://www.sqlite.org/wal.html
"By default, SQLite does a checkpoint automatically when the WAL file reaches a threshold size of 1000 pages."
flag.Uint64Var(&config.RaftSnapThreshold,"raft-snap",8192,"Number of outstanding log entries that trigger snapshot and Raft log compaction")
flag.Uint64Var(&config.RaftSnapThresholdWALSize,"raft-snap-wal-size",16*1024*1024,"Size of a SQLite WAL file in bytes which will trigger a snapshot and Raft log compaction")
flag.Uint64Var(&config.RaftSnapThresholdWALSize,"raft-snap-wal-size",4*1024*1024,"Size of a SQLite WAL file in bytes which will trigger a snapshot and Raft log compaction")