Yes, have a minimum set at Java 8 (ML contributors would greatly appreciate
that...).

--
Nikita Ivanov


On Tue, Sep 26, 2017 at 6:16 PM, Denis Magda <dma...@gridgain.com> wrote:

> You meant Java 7 drop I guess. That's a good question. Hope this happens
> soon.
>
> Denis
>
> On Tuesday, September 26, 2017, Nikita Ivanov <nivano...@gmail.com> wrote:
>
> > What about Java 8 to begin with?
> >
> > --
> > Nikita Ivanov
> >
> >
> > On Tue, Sep 26, 2017 at 3:16 PM, Denis Magda <dma...@apache.org
> > <javascript:;>> wrote:
> >
> > > Eventually now it’s time to put all the doubts aside on when Ignite
> > should
> > > support JDK 9. The JDK is production ready and was released not long
> time
> > > ago.
> > >
> > > Is there anyone interested to enable JDK 9 for Ignite?
> > >
> > > —
> > > Denis
> > >
> > > > On Mar 24, 2017, at 10:22 AM, Denis Magda <dma...@apache.org
> > <javascript:;>> wrote:
> > > >
> > > > Evgenii,
> > > >
> > > > Thanks for the investigation. Could you update the ticket with all of
> > > your findings and suggestions?
> > > >
> > > > If you feel you can’t fix it by 2.0 then let’s do it in the next
> minor
> > > release like 2.x. I don’t think that we introduce any breaking
> > > compatibilities when JDK 9 support is added later. Do you think so as
> > well?
> > > >
> > > > —
> > > > Denis
> > > >
> > > >> On Mar 24, 2017, at 9:24 AM, Evgenii Zhuravlev <
> > > e.zhuravlev...@gmail.com <javascript:;>> wrote:
> > > >>
> > > >> Igniters,
> > > >>
> > > >> I found that maven-war-plugin, that used in ignite-websphere-test
> > > doesn't
> > > >> work with java 9. Here is issue:
> > > >> https://issues.apache.org/jira/browse/MWAR-397.They have workaround
> > > with
> > > >> setting MAVEN_OPTS, but this workaround doesn't fit us.
> > > >>
> > > >> 2017-03-24 0:51 GMT+03:00 zixu mo <hufeng1...@gmail.com
> > <javascript:;>>:
> > > >>
> > > >>>
> > > >>>
> > > >>> JB IDEA2017.1 released, support jdk 9.
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>> On Fri, Mar 24, 2017 at 12:14 AM +0800, "Anton Vinogradov" <
> > > >>> avinogra...@gridgain.com <javascript:;>> wrote:
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>> Denis,
> > > >>>
> > > >>> I'm not sure, but javac usage seems to be not our but IDE
> "problem".
> > > >>> No one call javac directly, AFAIK.
> > > >>>
> > > >>> So, any --add-exports can be added to wrapping maven, .bat/.sh or
> IDE
> > > >>> settings.
> > > >>> I'm pretty sure JB's IDEA will handle this right after Java9
> release
> > :)
> > > >>>
> > > >>> On Wed, Mar 22, 2017 at 12:19 PM, Anton Vinogradov  wrote:
> > > >>>
> > > >>>> Denis,
> > > >>>>
> > > >>>> I'm not sure, but javac usage seems to be not our but IDE
> "problem".
> > > >>>> No one call javac directly, AFAIK.
> > > >>>>
> > > >>>> So, any --add-exports can be added to wrapping maven, .bat/.sh or
> > IDE
> > > >>>> settings.
> > > >>>> I'm pretty sure JB's IDEA will handle this right after Java9
> release
> > > :)
> > > >>>>
> > > >>>> On Wed, Mar 22, 2017 at 1:43 AM, Denis Magda  wrote:
> > > >>>>
> > > >>>>> For using internal classes that not exported by default, we will
> > > need to
> > > >>>>> add new args(--add-exports) when compiling (javac) *and* when
> > running
> > > >>>>> (java
> > > >>>>> ).
> > > >>>>> Is it ok?
> > > >>>>>
> > > >>>>>
> > > >>>>> Anton, are you fine with this approach?
> > > >>>>>
> > > >>>>> —
> > > >>>>> Denis
> > > >>>>>
> > > >>>>> On Mar 21, 2017, at 11:05 AM, Evgenii Zhuravlev
> > > >>>>> wrote:
> > > >>>>>
> > > >>>>> Denis,
> > > >>>>>
> > > >>>>> I've found that some internal classes like
> sun.misc.SharedSecrets,
> > > >>>>> sun.misc.URLClassPath, sun.misc.PerfCounter, sun.misc.Cleaner
> > changed
> > > >>>>> their
> > > >>>>> packages. I can create wrapper for this classes with 2 modules,
> > that
> > > can
> > > >>>>> be
> > > >>>>> enabled by profiles for java9 and java7-8.
> > > >>>>> For using internal classes that not exported by default, we will
> > > need to
> > > >>>>> add new args(--add-exports) when compiling (javac) *and* when
> > running
> > > >>>>> (java
> > > >>>>> ).
> > > >>>>> Is it ok?
> > > >>>>>
> > > >>>>>
> > > >>>>> Also, there are a two different Unsafe classes in java 9 -
> > > >>>>> sun.misc.Unsafe
> > > >>>>> & jdk.internal.misc.Unsafe, but both of them doesn't have
> > > monitorEnter &
> > > >>>>> monitorExit methods, that we use in
> > > >>>>> org.apache.ignite.internal.util.GridUnsafe. What should I do
> with
> > > this
> > > >>>>> case?
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>> 2017-03-21 11:21 GMT+03:00 Евгений Журавлев :
> > > >>>>>
> > > >>>>> Denis,
> > > >>>>>
> > > >>>>> I found some recommendations on openjdk wiki:
> > > >>>>> https://wiki.openjdk.java.net/display/JDK8/Java+Dependency+
> > > >>> Analysis+Tool
> > > >>>>>
> > > >>>>> 2017-03-20 20:44 GMT+03:00 Denis Magda :
> > > >>>>>
> > > >>>>> Referring to your report only the following API was removed
> > > completely.
> > > >>>>> The rest is still deprecated and stowed in special JDK 9 modules.
> > > >>>>>
> > > >>>>>
> > > >>>>> "org.apache.ignite.internal.processors.hadoop.HadoopClassLoader"
> > ->
> > > >>>>> "sun.misc.PerfCounter (JDK internal API (JDK removed internal
> > API))”;
> > > >>>>>
> > > >>>>>
> > > >>>>> "org.apache.ignite.internal.processors.platform.memory.Pla
> > > >>>>> tformMemoryPool"
> > > >>>>> -> "sun.misc.Cleaner (JDK internal API (JDK removed internal
> > API))”;
> > > >>>>>
> > > >>>>> "org.apache.ignite.internal.util.nio.GridNioServer$Abstrac
> > > >>>>> tNioClientWorker"
> > > >>>>> -> "sun.misc.Cleaner (JDK internal API (JDK removed internal
> > API))";
> > > >>>>>
> > > >>>>>
> > > >>>>> "org.apache.ignite.internal.processors.rest.protocols.GridRe
> > > >>>>> stProtocolAdapter"
> > > >>>>> -> "sun.misc.BASE64Encoder (JDK internal API (JDK removed
> internal
> > > >>> API))”;
> > > >>>>>
> > > >>>>> "org.apache.ignite.internal.util.IgniteUtils"      ->
> > > >>>>> "sun.misc.JavaNetAccess (JDK internal API (JDK removed internal
> > > API))”;
> > > >>>>>
> > > >>>>>
> > > >>>>> "org.apache.ignite.internal.util.IgniteUtils"      ->
> > > >>>>> "sun.misc.SharedSecrets (JDK internal API (JDK removed internal
> > > API))”;
> > > >>>>>
> > > >>>>>
> > > >>>>> "org.apache.ignite.internal.util.IgniteUtils"      ->
> > > >>>>> "sun.misc.URLClassPath (JDK internal API (JDK removed internal
> > > API))”;
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>> *Evgeniy*, does Oracle officially suggest replacements for
> deleted
> > > APIs?
> > > >>>>> Probably it’s a matter of day to do a switch.
> > > >>>>>
> > > >>>>>
> > > >>>>> —
> > > >>>>> Denis
> > > >>>>>
> > > >>>>> On Mar 20, 2017, at 9:57 AM, Евгений Журавлев
> > > >>>>>
> > > >>>>> wrote:
> > > >>>>>
> > > >>>>>
> > > >>>>> Igniters,
> > > >>>>>
> > > >>>>> There are a few JDK internal APIs removed in JDK 9, that we use
> in
> > > >>>>>
> > > >>>>> ignite. We need to decide what to do with these dependencies.
> Here
> > > is a
> > > >>>>> list of dependencies after using jdeps
> > > >>>>>
> > > >>>>>
> > > >>>>> 2017-01-26 12:07 GMT+03:00 Anton Vinogradov >
> > > >>>>>>> :
> > > >>>>>
> > > >>>>> Denis,
> > > >>>>>
> > > >>>>> I've created issue >
> > > >>>>> https://issues.apache.org/jira/browse/IGNITE-4615>> related
> > > >>>>>
> > > >>>>> to discussion.
> > > >>>>> We have a lot of legacy code inside pom.xml files. One of legacy
> > > issues
> > > >>>>>
> > > >>>>> is
> > > >>>>>
> > > >>>>> a tools.jar usage.
> > > >>>>> So, it will be nice to fix this as well.
> > > >>>>>
> > > >>>>> On Thu, Jan 26, 2017 at 2:54 AM, Denis Magda >
> > > >>>>>>> wrote:
> > > >>>>>
> > > >>>>>
> > > >>>>> Well, the build fails almost immediately on the latest JDK 9.
> > > >>>>>
> > > >>>>> This is the reason (https://issues.jenkins-ci.org
> > > >>>>>
> > > >>>>> /browse/JENKINS-25993 >
> > > >>>>> ).
> > > >>>>>
> > > >>>>>
> > > >>>>> [ERROR] Failed to execute goal on project ignite-tools: Could not
> > > >>>>>
> > > >>>>> resolve
> > > >>>>>
> > > >>>>> dependencies for project org.apache.ignite:ignite-tools
> > > >>>>>
> > > >>>>> :jar:2.0.0-SNAPSHOT:
> > > >>>>>
> > > >>>>> Could not find artifact com.sun:tools:jar:9-ea at specified path
> > > >>>>> /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home/..
> > > >>>>>
> > > >>>>> /lib/tools.jar
> > > >>>>>
> > > >>>>> -> [Help 1]
> > > >>>>>
> > > >>>>>
> > > >>>>> If to tweak pom files cleaning out references to tools.jar then
> > other
> > > >>>>> exceptions arise.
> > > >>>>>
> > > >>>>> *Anton V*, could try to build the master on your side applying
> all
> > > the
> > > >>>>> required changes to pom files? I don’t think I’ll do everything
> > > >>>>>
> > > >>>>> correctly.
> > > >>>>>
> > > >>>>> If the build goes through at least with minor modifications then
> > this
> > > >>>>>
> > > >>>>> would
> > > >>>>>
> > > >>>>> be a good sign.
> > > >>>>>
> > > >>>>> —
> > > >>>>> Denis
> > > >>>>>
> > > >>>>>
> > > >>>>> On Jan 25, 2017, at 3:22 PM, Denis Magda >
> > > >>>>> dma...@apache.org <javascript:;>>> wrote:
> > > >>>>>
> > > >>>>>
> > > >>>>> Vovan,
> > > >>>>>
> > > >>>>> As far as I understand, under the module they mean new
> > > >>>>>
> > > >>>>> component/feature
> > > >>>>>
> > > >>>>> of Java 9 [1]. If you don’t use Java modules then there shouldn’t
> > be
> > > >>>>>
> > > >>>>> any
> > > >>>>>
> > > >>>>> issues at all.
> > > >>>>>
> > > >>>>> In any case, let me try to build the project with JDK 9 that has
> > > >>>>>
> > > >>>>> passed
> > > >>>>>
> > > >>>>> feature complete phase.
> > > >>>>>
> > > >>>>> [1] http://openjdk.java.net/projects/jigsaw/spec/sotms/#defining
> > > >>>>>
> > > >>>>> -modules > g-modules> <
> > > >>>>>
> > > >>>>> http://openjdk.java.net/projects/jigsaw/spec/sotms/#
> > defining-modules
> > > >>>>>
> > > >>>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>> —
> > > >>>>> Denis
> > > >>>>>
> > > >>>>> On Jan 25, 2017, at 5:47 AM, Vladimir Ozerov >
> > > >>>>>>> wrote:
> > > >>>>>
> > > >>>>>
> > > >>>>> Igniters,
> > > >>>>>
> > > >>>>> Please see this article [1] from Kotlin guys. They had to re-pack
> > > >>>>>
> > > >>>>> public
> > > >>>>>
> > > >>>>> API because Java 9 doesn't allow several modules to share the
> same
> > > >>>>>
> > > >>>>> public
> > > >>>>>
> > > >>>>> package. Looks like this limitation could impact us at some
> point,
> > so
> > > >>>>>
> > > >>>>> that
> > > >>>>>
> > > >>>>> we will not be able to support Java 9 without breaking API
> changes.
> > > >>>>>
> > > >>>>> May be it makes sense to perform some initial investigation of
> > Java 9
> > > >>>>> impact before AI 2.0 release, so that we can minimize (or at
> least
> > > >>>>> estimate) potential future impact?
> > > >>>>>
> > > >>>>> Vladimir.
> > > >>>>>
> > > >>>>> [1]
> > > >>>>> https://blog.jetbrains.com/kotlin/2017/01/kotlin-1-1- <
> > > >>>>>
> > > >>>>> https://blog.jetbrains.com/kotlin/2017/01/kotlin-1-1->
> > > >>>>>
> > > >>>>> whats-coming-in-the-standard-library/
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >
> > >
> > >
> >
>

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