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Jay Guo authored
This CR adds enables etcd/raft based chain to take snapshot for every `SnapInterval` blocks. It stores snapshot to wal and disk. When node restarts, it loads latest snapshot and uses Term and Index stored in it to replay WAL to memory storage. Change-Id: Ib8c22173cd5b05b7a1b27b16e2003bdabbecf82a Signed-off-by: Jay Guo <guojiannan1101@gmail.com>
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