[GitHub] [spark] zzcclp commented on pull request #31733: [SPARK-34607][SQL] Add `Utils.isMemberClass` to fix a malformed class name error on jdk8u

[GitBox <gi...@apache.org>]

zzcclp commented on pull request #31733:
URL: https://github.com/apache/spark/pull/31733#issuecomment-791171776


   @maropu After merging this pr, the IDEA show a error like this:
   ```
   java.io.FileNotFoundException: /XXX/spark/sql/catalyst/target/scala-2.12/test-classes/org/apache/spark/sql/catalyst/encoders/ExpressionEncoderSuite$OuterLevelWithVeryVeryVeryLongClassName1$OuterLevelWithVeryVeryVeryLongClassName2$OuterLevelWithVeryVeryVeryLongClassName3$OuterLevelWithVeryVeryVeryLongClassName4$OuterLevelWithVeryVeryVeryLongClassName5$OuterLevelWithVeryVeryVeryLongClassName6$OuterLevelWithVeryVeryVeryLongClassName7$OuterLevelWithVeryVeryVeryLongClassName8$OuterLevelWithVeryVeryVeryLongClassName9$OuterLevelWithVeryVeryVeryLongClassName10$OuterLevelWithVeryVeryVeryLongClassName11$.class (File name too long)
   	at java.io.FileInputStream.open0(Native Method)
   	at java.io.FileInputStream.open(FileInputStream.java:195)
   	at java.io.FileInputStream.<init>(FileInputStream.java:138)
   	at com.intellij.openapi.util.io.FileUtil.loadFileBytes(FileUtil.java:194)
   	at org.jetbrains.jps.incremental.scala.local.LazyCompiledClass.$anonfun$getContent$1(LazyCompiledClass.scala:22)
   	at scala.Option.getOrElse(Option.scala:201)
   	at org.jetbrains.jps.incremental.scala.local.LazyCompiledClass.getContent(LazyCompiledClass.scala:21)
   	at org.jetbrains.jps.incremental.instrumentation.BaseInstrumentingBuilder.performBuild(BaseInstrumentingBuilder.java:38)
   ```
   The system is Ubuntu, it seems there is file name length limitation, about 255. 


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