Github user vrozov commented on a diff in the pull request:
https://github.com/apache/drill/pull/1145#discussion_r173375649
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/client/DrillClient.java ---
@@ -96,6 +96,8 @@
import io.netty.channel.EventLoopGroup;
+import javax.validation.constraints.NotNull;
--- End diff --
Please use java.annotation.Nonnull or org.jetbrains.annotations.NotNull (or
do not annotate, it is inferred).---
