NotSerializableException org.neo4j.kernel.EmbeddedGraphDatabase [英] NotSerializableException org.neo4j.kernel.EmbeddedGraphDatabase

问题描述

我正在使用 neo4j 创建图形，将 mongodb 中的数据作为文档.独立代码在没有风暴的情况下运行良好.但是在将它与 Storm 集成时，我得到了 -

<块引用>

java.io.NotSerializableException: org.neo4j.kernel.EmbeddedGraphDatabase

例外.不知道我得到这个的确切原因.如果有人遇到此类问题，请告诉我如何解决.

解决方案

Storm 中用于属性/字段的所有类都必须实现接口 Serializable.我假设您在 Collector.emit(new Values(...)) 中使用了 EmbeddedGraphDatabase 类型的对象(直接或以嵌套方式).

I am working with neo4j to create graph, taking data from mongodb as document. Standalone code is working fine without storm. But while integrating it with storm, I am getting -

java.io.NotSerializableException: org.neo4j.kernel.EmbeddedGraphDatabase

exception. Dont know the exact reason why i am getting this. If anybody faced such issue please let me know how to resolve it.

解决方案

All classes that are used for attributes/fields in Storm must implement the interface Serializable. I assume that you are using a object of type EmbeddedGraphDatabase within Collector.emit(new Values(...)) (either directly or in a nested way).

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