pvary commented on code in PR #12771:
URL: https://github.com/apache/iceberg/pull/12771#discussion_r2039266233
##########
spark/v3.5/spark/src/test/java/org/apache/iceberg/spark/data/TestSparkParquetWriter.java:
##########
@@ -151,4 +152,27 @@ public void testFpp() throws IOException,
NoSuchFieldException, IllegalAccessExc
assertThat(fpp).isEqualTo(0.05);
}
}
+
+ @Test
+ public void testColumnStatsEnabled()
+ throws IOException, NoSuchFieldException, IllegalAccessException {
+ File testFile = File.createTempFile("junit", null, temp.toFile());
+ try (FileAppender<InternalRow> writer =
+ Parquet.write(Files.localOutput(testFile))
+ .schema(SCHEMA)
+ .set(PARQUET_COLUMN_STATS_ENABLED_PREFIX + "id_long", "false")
+ .createWriterFunc(
+ msgType ->
+
SparkParquetWriters.buildWriter(SparkSchemaUtil.convert(SCHEMA), msgType))
+ .build()) {
+ // Using reflection to access the private 'props' field in ParquetWriter
+ Field propsField = writer.getClass().getDeclaredField("props");
+ propsField.setAccessible(true);
+ ParquetProperties props = (ParquetProperties) propsField.get(writer);
+ MessageType parquetSchema = ParquetSchemaUtil.convert(SCHEMA, "test");
+ ColumnDescriptor idlDescriptor = parquetSchema.getColumnDescription(new
String[] {"id_long"});
+ // Default statisticsEnabled should be true and for column id_long, it
is disabled.
+ assertThat(props.getStatisticsEnabled(idlDescriptor)).isEqualTo(false);
+ }
+ }
Review Comment:
Also could we check that the default setting is working as well?
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