Marcelo Vanzin created SPARK-28371:
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Summary: Parquet "starts with" filter is not null-safe
Key: SPARK-28371
URL: https://issues.apache.org/jira/browse/SPARK-28371
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 3.0.0
Reporter: Marcelo Vanzin
I ran into this when running unit tests with Parquet 1.11. It seems that 1.10
has the same behavior in a few places but Spark somehow doesn't trigger those
code paths.
Basically, {{UserDefinedPredicate.keep}} should be null-safe, and Spark's
implementation is not. This was clarified in Parquet's documentation in
PARQUET-1489.
Failure I was getting:
{noformat}
Job aborted due to stage failure: Task 0 in stage 1304.0 failed 1 times, most
recent failure: Lost task 0.0 in stage 1304.0 (TID 2528, localhost, executor
driver): java.lang.NullPointerException
 at
org.apache.spark.sql.execution.datasources.parquet.ParquetFilters$$anonfun$createFilter$16$$anon$1.keep(ParquetFilters.scala:544)

at
org.apache.spark.sql.execution.datasources.parquet.ParquetFilters$$anonfun$createFilter$16$$anon$1.keep(ParquetFilters.scala:523)

at
org.apache.parquet.internal.filter2.columnindex.ColumnIndexFilter.visit(ColumnIndexFilter.java:152)

at
org.apache.parquet.internal.filter2.columnindex.ColumnIndexFilter.visit(ColumnIndexFilter.java:56)

at
org.apache.parquet.filter2.predicate.Operators$UserDefined.accept(Operators.java:377)

at
org.apache.parquet.internal.filter2.columnindex.ColumnIndexFilter.visit(ColumnIndexFilter.java:181)

at
org.apache.parquet.internal.filter2.columnindex.ColumnIndexFilter.visit(ColumnIndexFilter.java:56)

at
org.apache.parquet.filter2.predicate.Operators$And.accept(Operators.java:309)

at
org.apache.parquet.internal.filter2.columnindex.ColumnIndexFilter$1.visit(ColumnIndexFilter.java:86)

at
org.apache.parquet.internal.filter2.columnindex.ColumnIndexFilter$1.visit(ColumnIndexFilter.java:81)

at
org.apache.parquet.filter2.compat.FilterCompat$FilterPredicateCompat.accept(FilterCompat.java:137)

at
org.apache.parquet.internal.filter2.columnindex.ColumnIndexFilter.calculateRowRanges(ColumnIndexFilter.java:81)

at
org.apache.parquet.hadoop.ParquetFileReader.getRowRanges(ParquetFileReader.java:954)

at
org.apache.parquet.hadoop.ParquetFileReader.getFilteredRecordCount(ParquetFileReader.java:759)

at
org.apache.parquet.hadoop.InternalParquetRecordReader.initialize(InternalParquetRecordReader.java:207)

at
org.apache.parquet.hadoop.ParquetRecordReader.initializeInternalReader(ParquetRecordReader.java:182)

at
org.apache.parquet.hadoop.ParquetRecordReader.initialize(ParquetRecordReader.java:140)

at
org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$$anonfun$buildReaderWithPartitionValues$1.apply(ParquetFileFormat.scala:439)

at
...
{noformat}
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