What version of gRPC are you using?

I have no idea, this is coming from Google Firebase.

What did you expect to see?

No error

This is the callstack:
java.util.concurrent.ExecutionException: com.google.api.gax.rpc.UnavailableException: io.grpc.StatusRuntimeException: UNAVAILABLE: HTTP/2 error code: NO_ERRORReceived Goawaysession_timed_out at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:500) at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:479) at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:76) at com.google.common.util.concurrent.ForwardingFuture.get(ForwardingFuture.java:62)

This is my lines of code that triggered this
ApiFuture future = db.collection(collection).document(doc).set(fsData, SetOptions.merge());
future.get();

This is working most of the time, it happened only twice so far so maybe it's something temporary but I have no idea what it is and how to overcome this.

Please advice