You can import the project directly by using "File -> Import -> Maven -> Existing Maven Projects” menu.
> On Jan 12, 2016, at 8:32 PM, Vasudevan, Ramkrishna S > <ramkrishna.s.vasude...@intel.com> wrote: > > > This is scala IDE Release 4.4.0. So without doing mvn eclipse:eclipse - how > to you import the project directly? > > Regards > Ram > -----Original Message----- > From: Chiwan Park [mailto:chiwanp...@apache.org] > Sent: Tuesday, January 12, 2016 4:54 PM > To: dev@flink.apache.org > Subject: Re: Naive question > > Because I tested with Scala IDE 4.3.0 only, the process in the documentation > is slightly different with my experience. > >> On Jan 12, 2016, at 8:21 PM, Stephan Ewen <se...@apache.org> wrote: >> >> @Chiwan: Is this still up to date from your experience? >> >> https://ci.apache.org/projects/flink/flink-docs-release-0.10/internals >> /ide_setup.html >> >> On Tue, Jan 12, 2016 at 12:04 PM, Chiwan Park <chiwanp...@apache.org> wrote: >> >>> Hi Ram, >>> >>> Because there are some Scala IDE (Eclipse) plugins needed, I >>> recommend to avoid `mvn eclipse:eclipse` command. Could you try just >>> run `mvn clean install -DskipTests` and import the project to Scala >>> IDE directly? In middle of importing process, Scala IDE suggests some >>> plugins needed. >>> >>> And which version of Scala IDE you are using? >>> >>>> On Jan 12, 2016, at 7:58 PM, Vasudevan, Ramkrishna S < >>> ramkrishna.s.vasude...@intel.com> wrote: >>>> >>>> Yes. I added it as Maven project only. I did mvn eclipse:eclipse to >>> create the project and also built the code using mvn clean install >>> -DskipTests. >>>> >>>> Regards >>>> Ram >>>> >>>> -----Original Message----- >>>> From: ewenstep...@gmail.com [mailto:ewenstep...@gmail.com] On Behalf >>>> Of >>> Stephan Ewen >>>> Sent: Tuesday, January 12, 2016 4:10 PM >>>> To: dev@flink.apache.org >>>> Subject: Re: Naive question >>>> >>>> Sorry to hear that it did not work out with Eclipse at all in the >>>> end, >>> even with all adjustments. >>>> >>>> Just making sure: You imported Flink as a Maven project, not >>>> manually >>> adding the big Flink dependency JAR? >>>> >>>> On Tue, Jan 12, 2016 at 5:15 AM, Vasudevan, Ramkrishna S < >>> ramkrishna.s.vasude...@intel.com> wrote: >>>> >>>>> Thanks to all. I tried with Scala Eclipse IDE with all these >>>>> 'change-scala-version.sh'. But in vain. >>>>> >>>>> So I switched over to Intellij and thing work fine over there. I am >>>>> new to Intellij so will try using it. >>>>> >>>>> Once again thanks for helping me out. >>>>> >>>>> Regards >>>>> Ram >>>>> >>>>> -----Original Message----- >>>>> From: Chiwan Park [mailto:chiwanp...@apache.org] >>>>> Sent: Monday, January 11, 2016 4:37 PM >>>>> To: dev@flink.apache.org >>>>> Subject: Re: Naive question >>>>> >>>>> Hi Ram, >>>>> >>>>> If you want to build Flink with Scala 2.10, just checkout Flink >>>>> repository from github or download source code from homepage, run >>>>> `mvn clean install -DskipTests` and import projects to your IDE. If >>>>> you want to build Flink with Scala 2.11, you have to run >>>>> `tools/change-scala-version.sh 2.11` before build the project. You >>>>> can revert Scala version change by running >>>>> `tools/change-scala-version.sh >>> 2.10`. >>>>> >>>>> About IDE, Flink community recommends IntelliJ IDEA because Scala >>>>> IDE have some problems in Java/Scala mixed project like Flink. But >>>>> I tested importing Flink project with Scala IDE 4.3.0, Scala 2.11.7 >>>>> and Flink 0.10.0 source code. Note that you should import the >>>>> project as >>> maven project. >>>>> >>>>> By the way, the community welcomes any questions. Please feel free >>>>> to post questions. :) >>>>> >>>>>> On Jan 11, 2016, at 7:30 PM, Vasudevan, Ramkrishna S < >>>>> ramkrishna.s.vasude...@intel.com> wrote: >>>>>> >>>>>> Thank you very much for the reply. >>>>>> I tried different ways and when I tried setting up the root >>>>>> pom.xml to >>>>>> 2.11 >>>>>> >>>>>> <scala.version>2.11.6</scala.version> >>>>>> <scala.binary.version>2.11</scala.binary.version> >>>>>> >>>>>> I got the following error >>>>>> [INFO] >>>>>> ------------------------------------------------------------------ >>>>>> -- >>>>>> -- >>>>>> -- [ERROR] Failed to execute goal on project flink-scala: Could >>>>>> not resolve depende ncies for project >>>>>> org.apache.flink:flink-scala:jar:1.0-SNAPSHOT: Could not find >>>>>> artifact >>>>>> org.scalamacros:quasiquotes_2.11:jar:2.0.1 in central >>>>>> (http://repo.mave >>>>>> n.apache.org/maven2) -> [Help 1] >>>>>> >>>>>> If I leave the scala.binary.verson to be at 2.10 and the scala >>>>>> version to be at 2.11.6 then I get the following problem [INFO] >>>>>> C:\flink\flink\flink-runtime\src\test\scala:-1: info: compiling >>>>>> [INFO] Compiling 366 source files to >>>>>> C:\flink\flink\flink-runtime\target\test-cl >>>>>> asses at 1452508064750 >>>>>> [ERROR] >>>>>> C:\flink\flink\flink-runtime\src\test\scala\org\apache\flink\runti >>>>>> me >>>>>> \j >>>>>> ob >>>>>> manager\JobManagerITCase.scala:700: error: can't expand macros >>>>>> compiled by previ ous versions of Scala >>>>>> [ERROR] assert(cachedGraph2.isArchived) >>>>>> [ERROR] ^ >>>>>> >>>>>> So am not pretty sure how to proceed with this. If I try to change >>>>>> the >>>>> version of scala to 2.10 in the IDE then I get lot of compilation >>> issues. >>>>> IS there any way to over come this? >>>>>> >>>>>> Once again thanks a lot and apologies for the naïve question. >>>>>> >>>>>> Regards >>>>>> Ram >>>>>> -----Original Message----- >>>>>> From: ewenstep...@gmail.com [mailto:ewenstep...@gmail.com] On >>>>>> Behalf Of Stephan Ewen >>>>>> Sent: Friday, January 8, 2016 5:01 PM >>>>>> To: dev@flink.apache.org >>>>>> Subject: Re: Naive question >>>>>> >>>>>> Hi! >>>>>> >>>>>> This looks like a mismatch between the Scala dependency in Flink >>>>>> and Scala in your Eclipse. Make sure you use the same for both. By >>>>>> default, Flink reference Scala 2.10 >>>>>> >>>>>> If your IDE is set up for Scala 2.11, set the Scala version >>>>>> variable in the Flink root pom.xml also to 2.11 >>>>>> >>>>>> Greetings, >>>>>> Stephan >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Fri, Jan 8, 2016 at 12:06 PM, Vasudevan, Ramkrishna S < >>>>> ramkrishna.s.vasude...@intel.com> wrote: >>>>>> >>>>>>> I have been trying to install, learn and understand Flink. I am >>>>>>> using >>>>>>> Scala- EclipseIDE as my IDE. >>>>>>> >>>>>>> I have downloaded the flink source coded, compiled and created >>>>>>> the >>>>> project. >>>>>>> >>>>>>> My work laptop is Windows based and I don't have eclipse based >>>>>>> workstation but I do have linux boxes for running and testing things. >>>>>>> >>>>>>> Some of the examples given in Flink source code do run directly >>>>>>> from Eclipse but when I try to run the Wordcount example from >>>>>>> Eclipse I get this error >>>>>>> >>>>>>> Exception in thread "main" java.lang.NoSuchMethodError: >>>>>>> >>>>> scala.collection.immutable.HashSet$.empty()Lscala/collection/immuta >>>>> ble >>>>> /HashSet; >>>>>>> at akka.actor.ActorCell$.<init>(ActorCell.scala:336) >>>>>>> at akka.actor.ActorCell$.<clinit>(ActorCell.scala) >>>>>>> at akka.actor.RootActorPath.$div(ActorPath.scala:159) >>>>>>> at >>>>> akka.actor.LocalActorRefProvider.<init>(ActorRefProvider.scala:464) >>>>>>> at >>>>> akka.actor.LocalActorRefProvider.<init>(ActorRefProvider.scala:452) >>>>>>> at >>>>>>> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native >>>>>>> Method) >>>>>>> at >>>>>>> sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown >>>>>>> Source) >>>>>>> at >>>>>>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown >>>>>>> Source) >>>>>>> at java.lang.reflect.Constructor.newInstance(Unknown Source) >>>>>>> at >>>>>>> >>>>> akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$2.app >>>>> ly( >>>>> DynamicAccess.scala:78) >>>>>>> at scala.util.Try$.apply(Try.scala:191) >>>>>>> at >>>>>>> >>>>> akka.actor.ReflectiveDynamicAccess.createInstanceFor(DynamicAccess. >>>>> sca >>>>> la:73) >>>>>>> at >>>>>>> >>>>> akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$3.app >>>>> ly( >>>>> DynamicAccess.scala:84) >>>>>>> at >>>>>>> >>>>> akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$3.app >>>>> ly( >>>>> DynamicAccess.scala:84) >>>>>>> at scala.util.Success.flatMap(Try.scala:230) >>>>>>> at >>>>>>> >>>>> akka.actor.ReflectiveDynamicAccess.createInstanceFor(DynamicAccess. >>>>> sca >>>>> la:84) >>>>>>> at akka.actor.ActorSystemImpl.liftedTree1$1(ActorSystem.scala:585) >>>>>>> at akka.actor.ActorSystemImpl.<init>(ActorSystem.scala:578) >>>>>>> at akka.actor.ActorSystem$.apply(ActorSystem.scala:142) >>>>>>> at akka.actor.ActorSystem$.apply(ActorSystem.scala:119) >>>>>>> at akka.actor.ActorSystem$.create(ActorSystem.scala:67) >>>>>>> at >>>>>>> >>>>> org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtil >>>>> s.s >>>>> cala:84) >>>>>>> at >>>>>>> >>>>> org.apache.flink.runtime.minicluster.FlinkMiniCluster.startJobManag >>>>> erA >>>>> ctorSystem(FlinkMiniCluster.scala:196) >>>>>>> at >>>>>>> >>>>> org.apache.flink.runtime.minicluster.FlinkMiniCluster.singleActorSy >>>>> ste >>>>> m$lzycompute$1(FlinkMiniCluster.scala:225) >>>>>>> at org.apache.flink.runtime.minicluster.FlinkMiniCluster.org >>>>>>> >>>>> $apache$flink$runtime$minicluster$FlinkMiniCluster$$singleActorSyst >>>>> em$ >>>>> 1(FlinkMiniCluster.scala:225) >>>>>>> at >>>>>>> >>>>> org.apache.flink.runtime.minicluster.FlinkMiniCluster$$anonfun$1.ap >>>>> ply >>>>> (FlinkMiniCluster.scala:230) >>>>>>> at >>>>>>> >>>>> org.apache.flink.runtime.minicluster.FlinkMiniCluster$$anonfun$1.ap >>>>> ply >>>>> (FlinkMiniCluster.scala:228) >>>>>>> at >>>>>>> >>>>> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike. >>>>> scala:245) >>>>>>> at >>>>>>> >>>>> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike. >>>>> scala:245) >>>>>>> at scala.collection.immutable.Range.foreach(Range.scala:166) >>>>>>> at >>>>>>> scala.collection.TraversableLike$class.map(TraversableLike.scala:245) >>>>>>> at scala.collection.AbstractTraversable.map(Traversable.scala:104) >>>>>>> at >>>>>>> >>>>> org.apache.flink.runtime.minicluster.FlinkMiniCluster.start(FlinkMi >>>>> niC >>>>> luster.scala:228) >>>>>>> at >>>>>>> >>>>> org.apache.flink.runtime.minicluster.FlinkMiniCluster.start(FlinkMi >>>>> niC >>>>> luster.scala:219) >>>>>>> at >>>>>>> >>>>> org.apache.flink.streaming.api.environment.LocalStreamEnvironment.e >>>>> xec >>>>> ute(LocalStreamEnvironment.java:104) >>>>>>> at >>>>>>> org.apache.flink.streaming.examples.wordcount.WordCount.main(Word >>>>>>> Co >>>>>>> un >>>>>>> t >>>>>>> .java:80) >>>>>>> >>>>>>> I know this is a naïve question but I would like to get some help >>>>>>> in order to over come this issue. I tried various options like >>>>>>> setting >>>>>>> scala-2.10 as the compiler for the project (then it shows >>>>>>> completely different error) and many of the projects don't even >>>>>>> compile. But with >>>>>>> 2.11 version I get the above stack trace. Any help here is welcome. >>>>>>> >>>>>>> Regards >>>>>>> Ram >>>>>>> >>>>> >>>>> Regards, >>>>> Chiwan Park >>>>> >>> >>> Regards, >>> Chiwan Park >>> > > > Regards, > Chiwan Park Regards, Chiwan Park
