Hi,
About half of our builds on the Ubuntu Jenkins [1] fail "SEVERE ERROR ChannelClosedException: channel is already closed". I reported https://issues.apache.org/jira/browse/INFRA-13604 to track this. Luckily the breakdown of the Jira plugin saves us from all these extra issues being created ;-)
Michael[1] https://builds.apache.org/view/All/job/Apache%20Jackrabbit%20Oak%20matrix/
