About FlumeUtils.createStream

[bit1...@163.com]

Hi,
In the spark streaming application, I write the code, 
FlumeUtils.createStream(ssc,"localhost",9999),which means spark will listen on 
the 9999 port, and wait for Flume Sink to write to it.
My question is:  when I submit the application to the Spark Standalone cluster, 
will 9999 be opened only on the Driver Machine or all the workers will also 
open the 9999 port and wait for the Flume data?