To prove Client go to Datanode directly and read the data stored on DataNode .

As we know Hadoop cluster consist of NameNode , DataNodes , and Client .And the myth in market is Client go to NameNode and read the file on DataNode via NameNode ,But this is not True I have done a small research on this myth — Is actually the Client go to NameNode and then read the file on DataNode via NameNode or Does Client go to DataNode directly and read the data .

Practical Demonstration

4 DataNodes with 1 Client .
Running tcpdump command in all 4 DataNodes.
Reading File from Client .
2nd DataNode is sending packets to Client .

THANKYOU

Tech_lover