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https://issues.apache.org/jira/browse/ATLAS-1849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nigel Jones resolved ATLAS-1849.
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Resolution: Fixed
> Atlas should prereq Java 8
> --------------------------
>
> Key: ATLAS-1849
> URL: https://issues.apache.org/jira/browse/ATLAS-1849
> Project: Atlas
> Issue Type: New Feature
> Reporter: Nigel Jones
> Priority: Major
>
> Atlas should move to assume Java 8 in order to remain current
> Java 7's last official release was in April 2015
> Java 8 was released in March 2014 and is the current release
> Java 9 is currently targetted for release in July 2017
> Various new components we wish to integrate, such as Janus Graph now quite
> sensibly depend on, and can take advantage of, Java 8. Whilst Atlas does
> build cleanly under java 8, the new capabilities cannot be used and more
> crucially any components requiring it can't be so easily integrated into the
> source. With Java 7 way out of focus there are more likely to be security
> exposures too.
> One of the current main environments Atlas is supported in is Hadoop. Hadoop
> 2.x is build with Java 7, though the very latest releases do at least support
> build with Java 8. Hadoop 3 which prereqs java 8 is due for release in August
> 2017
> However other environments in the enterprise need not be constrained by this
> dependency
> We need to decide how we will tackle this dependency change & mitigate the
> impacts - for example
> * we stay as-is until hadoop 3 is current/into 2018 (in my view too long)
> * we go all out on java 8 in the current trunk, and branches are cut for
> java 7 approach (I worry this is too much work to dual-fix)
> * we create multiple build profiles and carefully allow java8 code in as
> needed, but in such a way as a java7 version can still be built, albeit
> missing out on selective functionality - this could still be tricky, and has
> run-time dependency differences
> * if profiles we decide on default (once working I'd suggest 8...)
> Thoughts welcome :-)
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