The history of the question: 1. [mark sigar as optional](https://github.com/metamx/server-metrics/commit/10eb69835ddb56f2d7faa152fa6dcfc755bfeecf) 2. [Make Sigar not optional because it is now used in most Monitors](https://github.com/metamx/server-metrics/pull/23) 3. [Make sigar optional again](https://github.com/metamx/server-metrics/pull/29)
Also relevant: [Remove SIGAR](https://github.com/apache/incubator-druid/issues/35) [ Full content available at: https://github.com/apache/incubator-druid/pull/6300 ] This message was relayed via gitbox.apache.org for devnull@infra.apache.org
