Github user lvfangmin commented on a diff in the pull request: https://github.com/apache/zookeeper/pull/447#discussion_r205921085 --- Diff: src/java/main/org/apache/zookeeper/server/quorum/UpgradeableSessionTracker.java --- @@ -19,6 +19,8 @@ import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; +import java.util.Set; +import java.util.HashSet; --- End diff -- Yes, dangling import after implementation change, will remove.
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