For now, the right way to use older Maven version BUT I would recommend, similar to Spargel, make 0.9 be last release for Java6.
It is already end of life and more and more developers start flocking to Java7 and Java8. - Henry On Tue, Apr 28, 2015 at 4:34 AM, Robert Metzger <rmetz...@apache.org> wrote: > Hi, > > looking at the last builds on Travis, you'll notice that our builds are in > a pretty bad state: https://travis-ci.org/apache/flink/builds. > It seems that the last 15 builds on master all failed. > > These are the errors I saw + their status: > - Deadlock during cache up/download: I asked travis and they suggested a > workaround that I'm currently testing (MALLOC_ARENA=2, in master) > - issues opening zip files: The problem there is that some jars in the > cache seem to be corrupt. I asked ASF Infra to delete all caches, they did > it already, so the problem should be resolved. > - Maven failing on the java6 builds. The issue is that Travis updated their > build environment (April update [1]), which included a version upgrade of > Maven from 3.2.5 to 3.3.1. As per Maven 3.3.1, they are not supporting Java > 6 anymore [2]. > It seems that travis is rolling back the April environment updates [3] so > the issue will probably disappear for a few days until they fixed their > environment update. > We can resolve the issue by two ways a) drop Java6 support, b) manually > install maven on travis (its a matter of 1-2hrs). > - The third build on travis (hadoop200-alpha) is failing due to some Flink > tests: https://travis-ci.org/apache/flink/jobs/60335907 > It would be good if somebody who worked on this recently could take a > closer look. > > > Please let me know how you want to fix the Java6/Maven issue! > a) Drop Java 6 support for Flink > b) Use an older Maven version for now. > > I'm in favor of option b) because the community recently decided to keep > Java6 support. (Fun fact: Java 7 reached its end of support lifecycle [4] > in April 2015) > > > Robert > > [1] http://docs.travis-ci.com/user/build-environment-updates/2015-04-09/ > [2] https://issues.apache.org/jira/browse/MNG-5780 > [3] https://twitter.com/traviscistatus/status/592902357144498176 > [4] > http://en.wikipedia.org/wiki/Java_version_history#Java_SE_7_.28July_28.2C_2011.29
