Github user fhueske commented on a diff in the pull request: https://github.com/apache/flink/pull/3511#discussion_r139920526 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/operators/sort/NormalizedKeySorter.java --- @@ -309,7 +309,7 @@ public boolean write(T record) throws IOException { // Access Utilities // ------------------------------------------------------------------------ - private long readPointer(int logicalPosition) { + protected long readPointer(int logicalPosition) { --- End diff -- Changing a method from `private` to `protected` affects how it can be inlined. See for example this blog post: http://normanmaurer.me/blog/2014/05/15/Inline-all-the-Things (the difference of `private` and `public` is discussed at the end of the post). If it is just about making them accessible (and not overriding them) in the code-gen'd sorter, declaring them `final` might solve the issue. @StephanEwen and @pnowojski might have some additional advice here.
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