In context of HDFS file system, Point out the wrong statement.
A)replication factor can be configured at a cluster level (default is set to 3) and also at a file level
B)block report from each datanode contains a list of all the blocks that are stored on that datanode
C)user data is stored on the local file system of datanodes
D)datanode is aware of the files to which the blocks stored on it belong to

Question

Quizplus · Accepted Answer

In HDFS, DataNodes are not aware of the files to which the blocks stored on them belong. The NameNode maintains the file system namespace and manages the metadata for all the files and directories. DataNodes are responsible for storing the data but they do not have the information about file to block mapping; this information is maintained by the NameNode.

In Context of HDFS File System, Point Out the Wrong