I personally think that one of the most important goals of our project is to get new users trying it out. Therefore, we need to avoid any possible entry barrier. Sadly, it seems that people (in particular companies) are still using Java 6, even though its not being maintained anymore and potentially insecure. I don't think our project is in a position to convince people (again, companies ;) ) to switch to a more up-to-date java version. The thing with Java 6 is kind of a chicken-and-egg dilemma and in an ideal world, we should make a bold move to finally get rid of java 6.
I would suggest to add a little check to the JobManager startup process and print a WARN message for Java 6 users, that we are planning to drop Java 6 support soon. This way, we allow Java 6 user to try out Flink and at the same time give them another reason to move to 7. On Fri, Oct 24, 2014 at 9:07 PM, Henry Saputra <[email protected]> wrote: > Also just saw that Java 7 EOL is in about 6 months [1] > > > [1] http://www.oracle.com/technetwork/java/eol-135779.html > > On Thu, Oct 23, 2014 at 5:03 AM, Stephan Ewen <[email protected]> wrote: > > I know of a few companies who made the move away from java 6 just in the > > last weeks or months. > > > > I would vote to delay the bump till end of the year. > > Am 22.10.2014 22:39 schrieb "Daniel Warneke" <[email protected]>: > > > >> Hi, > >> > >> I would also be in favor of dropping Java 6 support. In my opinion, > Java 7 > >> is the standard these days. All of the three big Hadoop distributions > also > >> already consider Java 6 as deprecated for their latest releases [1,2,3]. > >> > >> Best regards, > >> > >> Daniel > >> > >> [1] > http://www.cloudera.com/content/cloudera/en/documentation/cdh5/latest/ > >> CDH5-Requirements-and-Supported-Versions/cdhrsv_jdk.html > >> [2] http://doc.mapr.com/display/MapR/JDK+Support+Matrix > >> [3] http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1- > >> > latest/bk_installing_manually_book/content/rpm-chap1-2.html#rpm-chap1-2-3 > >> > >> Am 22.10.2014 21:35, schrieb Aljoscha Krettek: > >> > >>> One of the reasons is that Scala was not very well known when the > >>> project started. That was around 2009. (Correct me if I'm wrong here, > >>> please) The more important reason is that we try to have efficient > >>> algorithms and memory management. This is easier to achieve in a > >>> language like Java that is relatively low-level compared to Scala. > >>> Scala makes it easy to write concise code that get's compiled to > >>> inefficient code. > >>> > >>> just my 2 cents... > >>> > >>> On Wed, Oct 22, 2014 at 9:23 PM, Mohit Singh <[email protected]> > wrote: > >>> > >>>> While I just just joined the community, so I am yet to be aware of the > >>>> internals of Flink but I am already liking the feature enhancements in > >>>> Java > >>>> 7 (type inferences, try-with-resources, diamond operator comes to my > >>>> mind). > >>>> > >>>> A digressing question, and I am sure this has would have been debated > >>>> extensively so pardon for bringing this up again.., but how did we > chose > >>>> between java and scala? > >>>> > >>>> > >>>> On Wed, Oct 22, 2014 at 10:53 AM, Henry Saputra < > [email protected] > >>>> > > >>>> wrote: > >>>> > >>>> HI Guys, > >>>>> > >>>>> I am wondering what do you guys think if we make Flink requires Java7 > >>>>> for both compile and runtime? > >>>>> > >>>>> Several reasons why I am proposing this: > >>>>> 1. Java6 has reached end of life as announced by Oracle. We have seen > >>>>> compile error happening with some versions of Java 6 > >>>>> 2. Flink is just starting and hence have more flexibility to move to > >>>>> Java 7 > >>>>> 3. Flink does not have compile dependencies that requires Java 6 > >>>>> 4. Java 7 enhancements: > >>>>> > http://www.oracle.com/technetwork/java/javase/jdk7-relnotes-418459.html > >>>>> > >>>>> > >>>>> Let me know what do you guys think. > >>>>> > >>>>> - Henry > >>>>> > >>>>> > >>>> > >>>> -- > >>>> Mohit > >>>> > >>>> "When you want success as badly as you want the air, then you will get > >>>> it. > >>>> There is no other secret of success." > >>>> -Socrates > >>>> > >>> > >> >
