even after adding this parameter in server config - pinot.server.instance.reload.consumingSegment=true result remains the same.

This is expected. Current consuming segment will only be filled with default values. The next consuming segment will be able to pick up the real values (details can be found here). In order to immediately start consuming the real values, you may restart the real-time server to force recreating the consuming segments. Note that this will cause the already consumed data being dropped and re-consumed

thank you