I have installed Cloudera hadoop (CDH). I used its Cloudera Manager to install all needed packages. When it was installed, the root is used. I found the installation created some users, such as hdfs, hive, mapred,hue,hbase... After the installation, should we change some permission or ownership of some directories/files? For example, to use HIVE. It works fine with root user, since the metatore directory belongs to root. But in order to let other user use HIVE, I have to change metastore ownership to a specific non-root user, then it works. Is it the best practice? Another example is the start-all.sh, stop-all.sh.... they all belong to root. Should I change them to other user? I guess there are more cases...
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