Github user dahaian commented on the issue: https://github.com/apache/spark/pull/16964 @zzcclp@srowen I have the same error. In JavaConsumerStrategySuite.java,error is as follows: The method mapValues(Function1<Long,Object>) is ambiguous for the type Map<TopicPartition,Long> I use java 8.I clean build. But the error still exist. What should I do?Any help is appreciated.
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