Thank you for the reference links. Which approach should I take, casting or use scala methods. If it's the latter option will the JIRA ticket FLINK-1711 <https://issues.apache.org/jira/browse/FLINK-1711> be updated to reflect it?
Thanks, Lokesh On Sat, May 9, 2015 at 8:16 PM, Chiwan Park <chiwanp...@icloud.com> wrote: > Hi. There is some problems using Guava’s check method in Scala. ( > https://groups.google.com/forum/#!topic/guava-discuss/juwovq26R3k < > https://groups.google.com/forum/#!topic/guava-discuss/juwovq26R3k>) You > can solve this error simply with casting last argument to java.lang.Object. > But I think we’d better use `require`, `assume`, `assert` method provided > by Scala. ( > http://daily-scala.blogspot.kr/2010/03/assert-require-assume.html < > http://daily-scala.blogspot.kr/2010/03/assert-require-assume.html>) > Because this changes affects many other codes, so we should discuss about > changing Guava's method to Scala’s method. > > Regards. > Chiwan Park (Sent with iPhone) > > > > > On May 10, 2015, at 11:49 AM, Lokesh Rajaram <rajaram.lok...@gmail.com> > wrote: > > > > Hello All, > > > > I am new to Flink community and am very excited about the project and > work > > you all have been doing. Kudos!! > > > > I was looking to pickup some starter task. Robert recommended to pick up > > https://issues.apache.org/jira/browse/FLINK-1711. Thanks Robert for your > > guidance. > > > > Sorry for a dumb question. I am done with code changes but my "mvn > verify" > > failing only for the scala module as follows > > > > > flink/flink-scala/src/main/scala/org/apache/flink/api/scala/joinDataSet.scala:77: > > error: ambiguous reference to overloaded definition, > > [ERROR] both method checkNotNull in object Preconditions of type [T](x$1: > > T, x$2: String, x$3: <repeated...>[Object])T > > [ERROR] and method checkNotNull in object Preconditions of type [T](x$1: > > T, x$2: Any)T > > [ERROR] match argument types ((L, R) => O,String) > > [ERROR] Preconditions.checkNotNull(fun, "Join function must not be > > null.") > > > > Same error I see for all of the Scala classes I changed. Any pointers > here > > will be very helpful for me to proceed further. Please let me know if you > > need more information. > > > > Thanks in advance for your help and support. > > > > Thanks, > > Lokesh > >
