Github user zsxwing commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17087#discussion_r115806099
  
    --- Diff: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
 ---
    @@ -899,8 +902,20 @@ object CodeGenerator extends Logging {
       /**
        * Compile the Java source code into a Java class, using Janino.
        */
    -  def compile(code: CodeAndComment): GeneratedClass = {
    +  def compile(code: CodeAndComment): GeneratedClass = try {
         cache.get(code)
    +  } catch {
    +    // Cache.get() may wrap the original exception. See the following URL
    +    // 
http://google.github.io/guava/releases/14.0/api/docs/com/google/common/cache/
    +    //   Cache.html#get(K,%20java.util.concurrent.Callable)
    +    case e : UncheckedExecutionException =>
    --- End diff --
    
    You can use the following simple codes:
    ```
    case e@(_: UncheckedExecutionException | _: ExecutionError) =>
        throw e.getCause
    ```


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