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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