At this moment relu_layer op doesn't allow threshold configuration, and legacy RELU op allows that.
We should add configuration option to relu_layer.

This will be a breaking change so needs to be done with a major release.

Currently OperationDetail and OperationField are inner classes within OperationServiceV2. These should be in their own outer classes for ease of serialisation and consistency.

We're working on having the backends in a more standardized and structured way. We are finishing moving backends to the backends/ directory, and moving shared code among backends to backends/base_*. The backends based on SQLAlchemy historically lived in ibis/sql. We moved them (MySQL move is still not merged at the time of writing this, see #2446), and after all backends are moved, would be

问题描述：关于工程中某个工作流节点单独执行不报错，保存工作流时提示：NotClassDefFoundError：Cloud not initialize class dispatch.Http$

问题原因：linkis-publish微服务关于netty-3.6.2.Final.jar升级包缺失

问题解决：将升级包上传重启linkis-publish微服务即可。