Shulou(Shulou.com)06/03 Report--

I am not eloquent, nor can I describe it in words, but the basic logic makes sense.

Export jar package

1. First of all, complete the coding of mapper, reducer and main method.

two. Right-click on peopleinfo's package, select export- "Java-" JAR file, and click NEXT

3. Enter the jar package name and export address, and click next- > next

4. Click Browse, select the main method, click OK, and then click Finish

The method of executing mapreduce on hdfs

Log in to big data's VM, provided that the hdfs environment has been built in the VM. Enter su-hdfs, and remember-there is a space with hdfs.

Then execute the hadoop jar jar package data file output path

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