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Point out the wrong statement.

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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

The question was posed to me in quiz.

This interesting question is from Introduction to HDFS in chapter HDFS – Hadoop Distributed File System of Hadoop

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Right choice is (d) DataNode is aware of the files to which the blocks stored on it belong to

For explanation I would say: NameNode is aware of the files to which the blocks stored on it belong to.

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