private void setLocalDatacenter(String localDatacenter) {
      this.localDatacenter = localDatacenter;
    }
@param callable an async call, where the {@link Future} is expected to be completed with an exception.
@param errorCode the expected {@link RestServiceErrorCode}.
ambry-named-mysql/src/test/java/com/github/ambry/named/MySqlNamedBlobDbTest.java