Excluding hosts from distributed queries

To exclude hosts from distributed queries, perform these steps on each node to which you want to send queries:

Procedure

Navigate to the solr/conf directory.

The default Solr conf directory location depends on the type of installation:
- Package installations: /usr/share/dse/solr/conf
- Tarball installations: <installation_location>/resources/solr/conf
Open the exclude.hosts file, and add the list of nodes to be excluded. Separate each name with a newline character.
Update the list of routing endpoints on each node by calling the JMX operation refreshEndpoints() on the com.datastax.bdp:type=search,name=Router mbean.

For example:
```
nodetool sjk mx -mc -b "com.datastax.bdp:type=search,name=Router" -op refreshEndpoints
```