after installing hadoop 3 0 1 I can s access spark shell or hive shell

Question

Initially, I have used Hadoop 2.4 now I upgrade it to 3.0.1 then now I cannot use the same commands.

Answer 1

Hi@abdul,

Hadoop 3.0.1 has lots of new features. As you are using the previous version of Hive, there may be a chance of a mismatch between the versions. So try to check which version is compatible with which version.

Comments

hello , but in previous version  all things like spark,hive,hdfs,sqoop etc is presinstalled in it ,we just have to type the relevent commands for the specific shell i.e to launch spark, i write spark-shell and this was active

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so, would you mean  i have to install the things like spark,hive etc  seprately?

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Every version has its own configuration way. If I am not wrong you are trying to use Hadoop 3.0.1 but previously you used Hadoop 2.4. So once again you have to configure your tools in your Hadoop 3.0.1

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So , you mean i have to install sepratelly then configure , am i right

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Yes, you can do that.