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From "Takeshi Yamamuro (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-19896) toDS throws StackOverflowError if case classes have circular references
Date Fri, 10 Mar 2017 11:57:04 GMT
Takeshi Yamamuro created SPARK-19896:
----------------------------------------

             Summary: toDS throws StackOverflowError if case classes have circular references
                 Key: SPARK-19896
                 URL: https://issues.apache.org/jira/browse/SPARK-19896
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.1.0
            Reporter: Takeshi Yamamuro


If case classes have circular references below, it throws StackOverflowError;

{code}
scala> :pasge
case class classA(i: Int, cls: classB)
case class classB(cls: classA)

scala> Seq(classA(0, null)).toDS()
java.lang.StackOverflowError
  at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1494)
  at scala.reflect.runtime.JavaMirrors$JavaMirror$$anon$1.scala$reflect$runtime$SynchronizedSymbols$SynchronizedSymbol$$super$info(JavaMirrors.scala:66)
  at scala.reflect.runtime.SynchronizedSymbols$SynchronizedSymbol$$anonfun$info$1.apply(SynchronizedSymbols.scala:127)
  at scala.reflect.runtime.SynchronizedSymbols$SynchronizedSymbol$$anonfun$info$1.apply(SynchronizedSymbols.scala:127)
  at scala.reflect.runtime.Gil$class.gilSynchronized(Gil.scala:19)
  at scala.reflect.runtime.JavaUniverse.gilSynchronized(JavaUniverse.scala:16)
  at scala.reflect.runtime.SynchronizedSymbols$SynchronizedSymbol$class.gilSynchronizedIfNotThreadsafe(SynchronizedSymbols.scala:123)
  at scala.reflect.runtime.JavaMirrors$JavaMirror$$anon$1.gilSynchronizedIfNotThreadsafe(JavaMirrors.scala:66)
  at scala.reflect.runtime.SynchronizedSymbols$SynchronizedSymbol$class.info(SynchronizedSymbols.scala:127)
  at scala.reflect.runtime.JavaMirrors$JavaMirror$$anon$1.info(JavaMirrors.scala:66)
  at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:48)
  at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:45)
  at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:45)
  at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:45)
  at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:45)
{code}



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