Github user shuizz commented on the pull request:
https://github.com/apache/mesos/commit/5b2261409e2b391d9182c5579e1df481c7f0779f#commitcomment-28612339
if value of protobuf map is any protobuf
messageï¼protobuf::internal::parse(google::protobuf::Message* message, const
JSON::Object& object) will return error: Not expecting a JSON string for field
'value'---
