[GitHub] flink pull request #6355: [FLINK-9878][network][ssl] add more low-level ssl ...

[pnowojski]

Github user pnowojski commented on a diff in the pull request:

    https://github.com/apache/flink/pull/6355#discussion_r204301373
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/NettyClient.java
 ---
    @@ -52,6 +56,9 @@
     
        private Bootstrap bootstrap;
    --- End diff --
    
    `bootstrap` is nullable and not marked - change to `Optional`


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