First hadoop project error: “Input path does not exist”

You need to upload your input files to the HDFS file system first:

bin/hadoop fs -mkdir In

will create a directory named /user/DEVUSER/In in HDFS.

bin/hadoop fs -put *.txt In

will copy all *.txt files from the current directory to the cluster (HDFS).

You seem to have skipped the chapter Upload data from the tutorial. Follow it and your problem should be solved.

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