Github user CodingCat commented on the pull request:
https://github.com/apache/spark/pull/637#issuecomment-46104739
what does this mean?
```
[error] * method
dagScheduler_=(org.apache.spark.scheduler.DAGScheduler)Unit in class
org.apache.spark.SparkContext does not have a correspondent in new version
[error] filter with:
ProblemFilters.exclude[MissingMethodProblem]("org.apache.spark.SparkContext.dagScheduler_=")
[info] spark-examples: previous-artifact not set, not analyzing binary
compatibility
[info] spark-examples: found 0 potential binary incompatibilities
java.lang.RuntimeException: spark-core: Binary compatibility check failed!
at scala.sys.package$.error(package.scala:27)
at
com.typesafe.tools.mima.plugin.SbtMima$.reportErrors(SbtMima.scala:64)
at
com.typesafe.tools.mima.plugin.MimaPlugin$$anonfun$mimaReportSettings$3.apply(MimaPlugin.scala:23)
at
com.typesafe.tools.mima.plugin.MimaPlugin$$anonfun$mimaReportSettings$3.apply(MimaPlugin.scala:23)
at scala.Function5$$anonfun$tupled$1.apply(Function5.scala:35)
at scala.Function5$$anonfun$tupled$1.apply(Function5.scala:34)
at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:42)
at sbt.std.Transform$$anon$4.work(System.scala:64)
at
sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
at
sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
at sbt.Execute.work(Execute.scala:244)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
at
sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)
at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
[error] (core/*:mimaReportBinaryIssues) spark-core: Binary compatibility
check failed!
[error] Total time: 18 s, completed Jun 15, 2014 1:47:42 AM
```
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