Org. apache. hadoop. filecache-*, org. apache. hadoop

Org. apache. hadoop. filecache-*, org. apache. hadoop

I don't know why the package is empty. Should the package name be a class for managing File Cache?

No information was found on the internet, and no answers were answered from various groups.

Hope a Daniel can tell me the answer. Thank you.

 

Why is there no hadoop-*-examplesjar file after the hadoop standalone configuration platform is set up?

Different versions have different names. What is the name in your hadoop_home directory?

Hadoop cluster configuration

Your configuration file mapred-site.xml has a problem, it is estimated that which configuration item is written wrong, whether you can paste the content of this file to see, the simplest case of mapred-site.xml configuration as follows, you can set a custom option. The following are pseudo-distributed or standalone deployment configurations. You can modify <value> distributed to your jobtracker node.
<Configuration>
<Property>
<Name> mapred. job. tracker </name>
<Value> localhost: 9001 </value>
</Property>
</Configuration>