Hi Vikas,
As noted in the link you cited, Hystrix monitoring is supported out of the box.
In the event that you are missing a downstream call that's launched from a Hystrix thread, you should be able to expose that thread's activity by modifying:
$AGENT_HOME/<version>/conf/app-agent-config.xml under section <fork-config>:
<include filter-type="STARTSWITH" filter-value="com.netflix.hystrix/"/>
<exclude filter-type="STARTSWITH" filter-value="com.netflix.hystrix.strategy.properties.HystrixPropertiesChainedArchaiusProperty"/>
<exclude filter-type="STARTSWITH" filter-value="com.netflix.hystrix.HystrixCommandProperties"/>
Regards,
Brian Wheeldon