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https://issues.apache.org/jira/browse/SPARK-56134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-56134:
-----------------------------------
Labels: pull-request-available (was: )
> WholeStageCodegen can lead to IllegalAccessError when accessing unsafeRow
> -------------------------------------------------------------------------
>
> Key: SPARK-56134
> URL: https://issues.apache.org/jira/browse/SPARK-56134
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 4.1.1
> Reporter: Chenhao Li
> Priority: Major
> Labels: pull-request-available
>
> This issue is very similar to
> https://issues.apache.org/jira/browse/SPARK-23598
> ```
> java.lang.IllegalAccessError: class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1$filter_NestedClass_0
> tried to access protected field
> org.apache.spark.sql.execution.BufferedRowIterator.unsafeRow
> (org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1$filter_NestedClass_0
> is in unnamed module of loader
> org.codehaus.commons.compiler.util.reflect.ByteArrayClassLoader @4a3e356a;
> org.apache.spark.sql.execution.BufferedRowIterator is in unnamed module of
> loader 'app')
> at
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1$filter_NestedClass_0.wholestagecodegen_doConsume_0$(Unknown
> Source)
> at
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1$filter_NestedClass_0.locallimit_doConsume_0$(Unknown
> Source)
> at
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1.processNext(Unknown
> Source)
> at
> org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
> at
> org.apache.spark.sql.execution.WholeStageCodegenEvaluatorFactory$WholeStageCodegenPartitionEvaluator$$anon$1.hasNext(WholeStageCodegenEvaluatorFactory.scala:50)
> ```
> The root cause is that a nested class is generated after the code body gets
> too large. It will access `BufferedRowIterator.unsafeRow`. The generated code
> can pass compilation, but will trigger an IllegalAccessError during execution.
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