Github user xccui commented on a diff in the pull request:
https://github.com/apache/flink/pull/6090#discussion_r196995942
--- Diff:
flink-libraries/flink-sql-client/src/main/java/org/apache/flink/table/client/gateway/local/ExecutionContext.java
---
@@ -187,6 +206,7 @@ private static ClusterSpecification
createClusterSpecification(CustomCommandLine
private final StreamExecutionEnvironment streamExecEnv;
private final TableEnvironment tableEnv;
+ @SuppressWarnings("unchecked")
--- End diff --
The `AggregateFunction` and `TableFunction` take generic type parameters.
Thus when do conversions (e.g., `streamTableEnvironment.registerFunction(k,
(AggregateFunction) udf);`) the Java compiler complains about that.
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