Drillbits can be installed on all nodes or any subset. Drill prefers to
have colocated nodes for better performance but this isn't a requirement
(e.g. Drillbit on same node as data node or regionserver).
On Sun, May 3, 2015 at 7:55 AM, George Lu <luwenbin888@gmail.com> wrote:
> Hi all,
>
> For the distributed mode installation, I have some questions,
>
> 1) Do I need to install Drill to each Hadoop Data Node or HBase
> RegionServer? Or I can install to any nodes in the cluster?
>
> 2) From the "Deploying Apache Drill in a Clustered Environment" in the
> confluence page, mentions below:
> "If you are using external JAR files, edit drill-env.sh, located in
> /opt/drill/conf/, and define HADOOP_HOME:"
>
> What is external JAR files? What is the purpose if I set the HADOOP_HOME?
>
> Thanks!
>
> George Lu
>
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