Hadoop (daily error) counts words. Error: java.io.filenotfoundexception: path is not a file:
My solution:
Generally, the jar package source code is not written well. You can check your source code. The problem I have is that the data path is not set well, so HDFS cannot find the file. Before modification: 
after modification: 
must be the absolute path of the data file in Hadoop!! After modification, I run successfully! Hope to help you!
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