wombatu-kun commented on code in PR #20326:
URL: https://github.com/apache/hudi/pull/20326#discussion_r4278215790
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hudi-spark-datasource/hudi-spark4-common/src/main/java/org/apache/hudi/variant/Spark4VariantShreddingProvider.java:
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@@ -176,7 +176,16 @@ private VariantSchema buildVariantSchema(Schema
avroSchema, boolean isTopLevel,
break;
default:
- // Scalar shredding
+ // Scalar shredding. On write (non-null builder), reject leaf types
Spark 4 cannot shred,
+ // as SparkShreddingUtils.buildVariantSchema does with
invalidVariantShreddingSchema.
+ if (builder != null && !isSparkShreddableScalar(tvSchema)) {
+ LogicalType logicalType = tvSchema.getLogicalType();
+ String typeName = tvSchema.getType().getName()
+ + (logicalType == null ? "" : " (" + logicalType.getName() +
")");
+ throw new HoodieException("Variant shredding schema has a
typed_value of type " + typeName
Review Comment:
+1
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