Github user ivmaykov commented on the pull request: https://github.com/apache/zookeeper/commit/232232e7f338a9eca440d89dcfc8ed22e0336e60#commitcomment-31143275 In zookeeper-server/src/test/java/org/apache/zookeeper/common/FileChangeWatcherTest.java: In zookeeper-server/src/test/java/org/apache/zookeeper/common/FileChangeWatcherTest.java on line 189: Sure. This will mean that ZK will not build on Java 1.7, but I guess I used lambdas in some other places and nobody objected, so it's probably fine :)
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