I'm in agreement with Steve on this one. We're aware that Java 6 is EOL, but we can't drop support for the lifetime of the 2.x line since it's a (very) incompatible change. AFAIK a 3.x release fixing this isn't on any of our horizons yet.
Best, Andrew On Thu, Oct 31, 2013 at 6:15 AM, Robert Rati <rr...@redhat.com> wrote: > https://issues.apache.org/****jira/browse/HADOOP-9594<https://issues.apache.org/**jira/browse/HADOOP-9594> >>> <https:**//issues.apache.org/jira/**browse/HADOOP-9594<https://issues.apache.org/jira/browse/HADOOP-9594> >>> > >>> https://issues.apache.org/****jira/browse/MAPREDUCE-5431<https://issues.apache.org/**jira/browse/MAPREDUCE-5431> >>> <htt**ps://issues.apache.org/jira/**browse/MAPREDUCE-5431<https://issues.apache.org/jira/browse/MAPREDUCE-5431> >>> > >>> https://issues.apache.org/****jira/browse/HADOOP-9611<https://issues.apache.org/**jira/browse/HADOOP-9611> >>> <https:**//issues.apache.org/jira/**browse/HADOOP-9611<https://issues.apache.org/jira/browse/HADOOP-9611> >>> > >>> https://issues.apache.org/****jira/browse/HADOOP-9613<https://issues.apache.org/**jira/browse/HADOOP-9613> >>> <https:**//issues.apache.org/jira/**browse/HADOOP-9613<https://issues.apache.org/jira/browse/HADOOP-9613> >>> > >>> https://issues.apache.org/****jira/browse/HADOOP-9623<https://issues.apache.org/**jira/browse/HADOOP-9623> >>> <https:**//issues.apache.org/jira/**browse/HADOOP-9623<https://issues.apache.org/jira/browse/HADOOP-9623> >>> > >>> https://issues.apache.org/****jira/browse/HDFS-5411<https://issues.apache.org/**jira/browse/HDFS-5411> >>> <https://**issues.apache.org/jira/browse/**HDFS-5411<https://issues.apache.org/jira/browse/HDFS-5411> >>> > >>> https://issues.apache.org/****jira/browse/HADOOP-10067<https://issues.apache.org/**jira/browse/HADOOP-10067> >>> <https**://issues.apache.org/jira/**browse/HADOOP-10067<https://issues.apache.org/jira/browse/HADOOP-10067> >>> > >>> https://issues.apache.org/****jira/browse/HDFS-5075<https://issues.apache.org/**jira/browse/HDFS-5075> >>> <https://**issues.apache.org/jira/browse/**HDFS-5075<https://issues.apache.org/jira/browse/HDFS-5075> >>> > >>> https://issues.apache.org/****jira/browse/HADOOP-10068<https://issues.apache.org/**jira/browse/HADOOP-10068> >>> <https**://issues.apache.org/jira/**browse/HADOOP-10068<https://issues.apache.org/jira/browse/HADOOP-10068> >>> > >>> https://issues.apache.org/****jira/browse/HADOOP-10075<https://issues.apache.org/**jira/browse/HADOOP-10075> >>> <https**://issues.apache.org/jira/**browse/HADOOP-10075<https://issues.apache.org/jira/browse/HADOOP-10075> >>> > >>> https://issues.apache.org/****jira/browse/HADOOP-10076<https://issues.apache.org/**jira/browse/HADOOP-10076> >>> <https**://issues.apache.org/jira/**browse/HADOOP-10076<https://issues.apache.org/jira/browse/HADOOP-10076> >>> > >>> https://issues.apache.org/****jira/browse/HADOOP-9849<https://issues.apache.org/**jira/browse/HADOOP-9849> >>> <https:**//issues.apache.org/jira/**browse/HADOOP-9849<https://issues.apache.org/jira/browse/HADOOP-9849> >>> > >>> >>> >>> most (all?) of these are pom changes >> > > A good number are basically pom changes to update to newer versions of > dependencies. A few, such as commons-math3, required code changes as well > because of a namespace change. Some are minor code changes to enhance > compatibility with newer dependencies. Even tomcat is mostly changes in > pom files. > > > Most of the changes are minor. There are 2 big updates though: Jetty 9 >>> (which requires java 7) and tomcat 7. These are also the most difficult >>> patches to rebase when hadoop produces a new release. >>> >>> >>> that's not going to go in the 2.x branch. Java 6 is still a common >> platform >> that people are using, because historically java7 (or any leading edge >> java >> version) is buggy. >> >> that said, our QA team did test hadoop 2 & HDP-2 at scale on java7 and >> openjdk 7, so it all works -it's just the commit "java7 only" is a big >> decision that >> > > I realize moving to java 7 is a big decision and wasn't trying to imply > this should happen without discussion and planning, just that it would be > nice to have the discussion and see where things land. It can also help > minimize work. There is an open bz for updating jetty to jetty 8 (the last > version that would work on java 6), but if there are plans to move to > java7, maybe it makes sense to just to jetty 9 and not test a new version > of jetty twice. > > With Hadoop in Fedora running on these newer deps there is a test bed to > play with to give some level of confidence before taking the plunge on any > major change. > > Rob >
