DataStax is probably more than happy answer your particaly DataStax Enterprise 
related questions here (I don’t know if that is 100% right place but…):
https://support.datastax.com/hc/en-us <https://support.datastax.com/hc/en-us>

This mailing list is for open source Cassandra and DSE issues are mostly out of 
the scope here. HADOOP is one of DSE-only features.


> On 16 May 2017, at 14:01, @Nandan@ <nandanpriyadarshi...@gmail.com> wrote:
> Hi ,
> Sorry in Advance if I am posting here .
> I stuck in some particular steps. 
> I was using DSE 4.8 on Single DC with 3 nodes. Today I upgraded my all 3 
> nodes to DSE 5.1
> Issue is when I am trying to start SERVICE DSE RESTART i am getting error 
> message as 
> Hadoop functionality has been removed from DSE.
> Please try again without the HADOOP_ENABLED set in /etc/default/dse.
> Even in /etc/default//dse file , HADOOP_ENABLED is set as 0 . 
> For testing ,Once I changed my HADOOP_ENABLED = 1 , 
> I  am getting error as 
> Found multiple DSE core jar files in /usr/share/dse/lib 
> /usr/share/dse/resources/dse/lib /usr/share/dse /usr/share/dse/common . 
> Please make sure there is only one.
> I searched so many article , but till now not able to find the solution. 
> Please help me to get out of this mess. 
> Thanks and Best Regards,
> Nandan Priyadarshi.

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