Check UdfCheckpointing Preconditions on Muck Rack

Check UdfCheckpointing Preconditions

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Flink作业执行之 2.算子 StreamOperator

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By TypeInformation outTypeInfo, getExecution Environment .addOperator, Check UdfCheckpointing Preconditions, return returnStream
| CSDN
Flink作业执行之 2.算子 StreamOperator 前文介绍了Transformation创建过程，大多数情况下通过UDF完成DataStream转换中，生成的Transformation实例中，核心逻辑是封装了SimpleOperatorFactory实例。 UDF场景下，DataStream到Transformation过程中，SimpleOperatorFactory实例的创建过程大致如下伪代码所示。 Function function = ; AbstractUdfStreamOperator operator = new AbstractUdfStreamOperator(function); SimpleOperatorFactory factory = SimpleOperatorFactory.of(operator) 这里的UDF可以简单理解为需要我们自己传入对应Function实现类的操作，如map、filter等。 问题： StreamOperator是什么？ 为什么需要将Function封装到StreamOperator中？...
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