Hello. We use bidirectional streaming in our grpc app. In our system testing, we occasionally( once a day at average) face 'pure virtual call' exception when calling Next method on completion queue. The server serves about 30 clients(that is 30 bidirectional streams) in parallel at any given moment, when communication is read-heavy on server side(much fewer writes than reads). No concurrent calls on the same stream. No shared server contexts across different rpc calls. Server calls Finish on each stream after a read failure, and destroys the stream object when the finish tag is delivered on completion queue. AsyncNotifyDone api is not used. Version : grpc-1.11. Any thoughts on such a failure? Thanks!
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