Hello
I am not sure where to find the answers to questions such as below. Any
pointer or answer would be appreciated.
I would like to know some details such as how many heartbeats are sent
per second to the name node in a "typical" configuration (I understand
that these parameters might be configurable)
Also, I would like to know how much overhead in terms of network traffic
do the HDFS protocol messages typically have? (i.e. heartbeat and block
report messages)
I understand that exact answers might not be possible but I want to get
a feeling about the above. For example, is the protocol overhead a lot
or negligible in contrast with all the data that is moving around.
Thank you in advance for your time.
Fatemah
