wu-sheng commented on issue #1080: Exception loading sessions from persistent storage URL: https://github.com/apache/incubator-skywalking/issues/1080#issuecomment-382219001 Why does your session object have `RestController` annotation? This is the reason. Every `@RestController` means a Controller rather than a normal Java value Bean for Spring, and SkyWalking will instrument these classes for tracing HTTP incoming request. And every instrumented class is added a new field, which value couldn't be serialized, since we didn't expect you serialize a Controller, this violate basic MVC principle.
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