Github user ggevay commented on a diff in the pull request:
https://github.com/apache/flink/pull/3511#discussion_r140663596
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/ExecutionConfig.java ---
@@ -127,6 +127,12 @@
private long autoWatermarkInterval = 0;
/**
+ * The flag determines whether a custom NormalizedKeySorter will be
dynamically created
+ * for underlying data
+ */
+ private boolean codeGenerationForSorterEnabled = false;
--- End diff --
36419beee7938768453d2335daa9d7c29af720c1
I created a Jira for performance tweaking:
https://issues.apache.org/jira/browse/FLINK-7680
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