It is better for the peer with the smallest lag(fall behind index) to become the transferee. #111
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Hi, @RongtongJin
In method DLedgerServer#checkPreferredLeader(), The first peer in the list preferredLeaderIds that meets the condition is determined to be the leader transferee, as show below：
I think, the peer with the smallest lag(fall behind index) be the transferee, which may be better.