Github user merrimanr commented on the issue:
https://github.com/apache/metron/pull/1250
We do shut down Zookeeper connections here:
https://github.com/apache/metron/blob/master/metron-platform/metron-common/src/main/java/org/apache/metron/common/bolt/ConfiguredBolt.java#L129.
The Apache HttpComponents docs recommend closing clients:
http://hc.apache.org/httpcomponents-client-4.5.x/tutorial/html/fundamentals.html#d5e217.
---
