Can I use ChannelTrafficShapingHandler to control the network read/write speed in shuffle?

[Niu Zhaojie <nz...@gmail.com>]

Hi All:

I am trying to control the network read/write speed with
ChannelTrafficShapingHandler provided by Netty.


In TransportContext.java

I modify it as below:

public TransportChannelHandler initializePipeline(
        SocketChannel channel,
        RpcHandler channelRpcHandler) {
  try {
    // added by zhaojie
    logger.info("want to try control read bandwidth on host: " + host);
    final ChannelTrafficShapingHandler channelShaping = new
ChannelTrafficShapingHandler(50, 50, 1000);

    TransportChannelHandler channelHandler =
createChannelHandler(channel, channelRpcHandler);

    channel.pipeline()
            .addLast("encoder", ENCODER)
            .addLast(TransportFrameDecoder.HANDLER_NAME,
NettyUtils.createFrameDecoder())
            .addLast("decoder", DECODER)
            .addLast("channelTrafficShaping", channelShaping)
            .addLast("idleStateHandler", new IdleStateHandler(0, 0,
conf.connectionTimeoutMs() / 1000))
            // NOTE: Chunks are currently guaranteed to be returned in
the order of request, but this
            // would require more logic to guarantee if this were not
part of the same event loop.
            .addLast("handler", channelHandler);


I create a ChannelTrafficShapingHandler and register it into the pipeline
of the channel. I set the write and read speed as 50kb/sec in the
constructor.
Except for it, what else do I need to do?

However, it does not work. Is this idea correct? Am I missing something?
Is there any better way ?

Thanks.
-- 
*Regards,*
*Zhaojie*