Hi Everyone,

I'm coding a TCP Server that streams data to Spark. I'm hoping Akka TCP 
Streaming is good solution for what I want to do as it looks pretty 
compelling.

My Server will simply send data upon connection and disconnect once all 
data is all sent. To give some more detail:

   - Internally the data is coming from a chunked HTTP file upload. I want 
   to forward each chunk to the TCP connection to Spark with as little 
   overhead as possible as the data files are upwards of 65gb in size. I 
   already got the chunking working with Akka HTTP and tested it with the 65gb 
   file and it works flawlessly.
   - Each record in the file is delimited by a newline character. Records 
   are not the same size. This sounds like a natural fit as Akka TCP Streams 
   .via(Framing.Delimiter) looks like it might help here.

I'm right now stuck as all the examples I've found seem to be things like 
echo servers ping-ponging the data around. What I really need is a 
unidirectional connection where the server does all the transmitting and 
the client just gets the data. Is it possible for me to build a solution 
using Akka TCP Streaming where the HTTP file upload Actor publishes a 
message to the Event Bus which is in turn subscribed to by the TCP server 
which in turn results in data being pushed to the TCP client? How do I make 
the TCP client just get the data and not send anything to the server? (I 
would like this for a test harness outside of Spark.)  .dropWhile(b => 
true)?

I'd gladly publish my code to a GitHub Gist and my blog once I get this 
solution working to further help out the community. There isn't a lot of 
stuff on Akka TCP Streaming out there yet.

Any help would be greatly appreciated. Akka TCP Streaming looks very 
powerful and I'm still trying to wrap my head around it. Like I presume, 
 many others.

Thanks,

Phil

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