@Override
    public void exceptionCaught(final HandlerContext ctx, final MessageEvent<?> event, final Throwable cause)
                                                                                                             throws Exception {
        ctx.fireExceptionCaught(event, cause);
    }
Calls {@link HandlerContext#fireExceptionCaught(MessageEvent, Throwable)} to forward
to the next {@link Handler} in the {@link Pipeline}.

Sub-classes may override this method to change behavior.
jraft-rheakv/rheakv-core/src/main/java/com/alipay/sofa/jraft/rhea/util/pipeline/HandlerAdapter.java