vanzin commented on issue #25140: [SPARK-28371][SQL] Make Parquet "StartsWith" 
filter null-safe
URL: https://github.com/apache/spark/pull/25140#issuecomment-511056018
 
 
   If anyone is curious, here's the stack trace with 1.10 (which looks like 
generated code):
   
   ```
   [info]   Cause: java.lang.NullPointerException:
   [info]   at 
org.apache.spark.sql.execution.datasources.parquet.ParquetFilters$$anon$1.keep(ParquetFilters.scala:616)
   [info]   at 
org.apache.spark.sql.execution.datasources.parquet.ParquetFilters$$anon$1.keep(ParquetFilters.scala:595)
   [info]   at 
org.apache.parquet.filter2.recordlevel.IncrementallyUpdatedFilterPredicateBuilder$50.updateNull(IncrementallyUpdatedFilterPredicateBuilder.java:937)
   [info]   at 
org.apache.parquet.filter2.recordlevel.IncrementallyUpdatedFilterPredicateEvaluator.visit(IncrementallyUpdatedFilterPredicateEvaluator.java:49)
   [info]   at 
org.apache.parquet.filter2.recordlevel.IncrementallyUpdatedFilterPredicate$ValueInspector.accept(IncrementallyUpdatedFilterPredicate.java:122)
   [info]   at 
org.apache.parquet.filter2.recordlevel.IncrementallyUpdatedFilterPredicateEvaluator.evaluate(IncrementallyUpdatedFilterPredicateEvaluator.java:41)
   [info]   at 
org.apache.parquet.filter2.recordlevel.FilteringRecordMaterializer.getCurrentRecord(FilteringRecordMaterializer.java:93)
   ```
   

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