Adds docs for the ingestion error reporting and stats features introduced in https://github.com/apache/incubator-druid/pull/5418.
The documentation for Hadoop ingestion also assumes https://github.com/apache/incubator-druid/pull/6339 has been merged. [ Full content available at: https://github.com/apache/incubator-druid/pull/6373 ] This message was relayed via gitbox.apache.org for [email protected]
