public static String zkRTHostPath(String host) {
        return "/rt/host/" + host;
    }
The path specify the realtime tables a node should host.
<pre>
    .../rt/host/host0/tblA ... tblZ
    .../rt/host/host1/tblX ... tblY
</pre>
indexr-server/src/main/java/io/indexr/server/IndexRConfig.java