voonhous commented on code in PR #19403:
URL: https://github.com/apache/hudi/pull/19403#discussion_r3689099463
##########
hudi-spark-datasource/hudi-spark4-common/src/test/java/org/apache/hudi/variant/TestSpark4VariantShreddingProvider.java:
##########
@@ -87,11 +174,68 @@ void booleanRoundTrips() throws Exception {
assertScalarRoundTrips("true",
HoodieSchema.create(HoodieSchemaType.BOOLEAN));
}
+ @Test
+ void binaryShredsToByteBuffer() {
+ byte[] payload = "not-utf8-�ÿ".getBytes(StandardCharsets.ISO_8859_1);
+ assertScalarShredsTo(scalar(b -> b.appendBinary(payload)),
+ HoodieSchema.create(HoodieSchemaType.BYTES), ByteBuffer.wrap(payload));
+ }
+
+ @Test
+ void uuidShredsToString() {
+ UUID uuid = UUID.fromString("12345678-1234-1234-1234-123456789abc");
+ assertScalarShredsTo(scalar(b -> b.appendUuid(uuid)),
HoodieSchema.createUUID(), uuid.toString());
+ }
+
+ @Test
+ void dateShredsToDaysSinceEpoch() {
+ assertScalarShredsTo(scalar(b -> b.appendDate(19000)),
HoodieSchema.createDate(), 19000);
+ }
+
+ @Test
+ void timestampMicrosShredsToMicros() {
+ long micros = 1_700_000_000_000_000L;
+ assertScalarShredsTo(scalar(b -> b.appendTimestamp(micros)),
HoodieSchema.createTimestampMicros(), micros);
+ }
+
+ @Test
+ void localTimestampMicrosShredsToMicros() {
+ long micros = 1_700_000_000_000_000L;
+ assertScalarShredsTo(scalar(b -> b.appendTimestampNtz(micros)),
HoodieSchema.createLocalTimestampMicros(), micros);
+ }
+
@Test
void decimalRoundTrips() throws Exception {
Review Comment:
Addressed: added `numericScaleChangesShredWhenExact` (long 5 -> `5.00`,
decimal `5.00` -> `5L`) and `lossyDecimalIsNotShredded` (`123.456` into
`decimal(10,2)` stays in the residual).
##########
hudi-spark-datasource/hudi-spark4-common/src/test/java/org/apache/hudi/variant/TestSpark4VariantShreddingProvider.java:
##########
@@ -22,61 +22,148 @@
import org.apache.hudi.common.schema.HoodieSchema;
import org.apache.hudi.common.schema.HoodieSchemaField;
import org.apache.hudi.common.schema.HoodieSchemaType;
+import org.apache.hudi.exception.HoodieException;
+import org.apache.avro.Conversions;
import org.apache.avro.Schema;
import org.apache.avro.generic.GenericData;
import org.apache.avro.generic.GenericRecord;
import org.apache.spark.types.variant.Variant;
import org.apache.spark.types.variant.VariantBuilder;
import org.junit.jupiter.api.Test;
+import java.math.BigDecimal;
import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
import java.time.ZoneOffset;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;
+import java.util.UUID;
+import static
org.apache.hudi.common.schema.HoodieSchema.Variant.VARIANT_METADATA_FIELD;
+import static
org.apache.hudi.common.schema.HoodieSchema.Variant.VARIANT_TYPED_VALUE_FIELD;
+import static
org.apache.hudi.common.schema.HoodieSchema.Variant.VARIANT_VALUE_FIELD;
import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
/**
- * Round-trip coverage for {@link Spark4VariantShreddingProvider}: shred an
unshredded variant, then
- * reconstruct it, and assert it round-trips. This exercises {@code
rebuildVariantRecord} and the
- * {@code AvroVariantRow}/{@code AvroObjectRow}/{@code AvroArrayRow} accessors
across scalar, object,
- * and array shapes - the AVRO read-path reconstruction (#18931) that the
Spark MOR SQL test cannot
- * reach (Spark compaction reads base files via the InternalRow reader, not
HoodieAvroParquetReader).
+ * Round-trip and behavior-pinning coverage for {@link
Spark4VariantShreddingProvider}: shred an
+ * unshredded variant, then reconstruct it, asserting both the intermediate
shredded schema/values and
+ * the reconstructed variant. This exercises {@code shredVariantRecord},
{@code rebuildVariantRecord},
+ * {@code avroTypeToScalarType}, {@code convertScalarToAvro}, and the
+ * {@code AvroVariantRow}/{@code AvroObjectRow}/{@code AvroArrayRow} accessors
across every scalar leaf
+ * type, object/array shapes, partial (residual) shredding, and the null/error
guards - the AVRO
+ * read-path reconstruction that the Spark MOR SQL test cannot reach (Spark
compaction reads base
+ * files via the InternalRow reader, not HoodieAvroParquetReader).
*/
class TestSpark4VariantShreddingProvider {
private final Spark4VariantShreddingProvider provider = new
Spark4VariantShreddingProvider();
private final Schema unshreddedSchema =
HoodieSchema.createVariant().getAvroSchema();
- /** Parse json to a variant, shred it to {@code shredded}, rebuild it,
assert the json round-trips. */
- private void assertRoundTrips(String json, HoodieSchema.Variant shredded)
throws Exception {
- Variant variant = VariantBuilder.parseJson(json, false);
- GenericRecord unshreddedRecord = new GenericData.Record(unshreddedSchema);
- unshreddedRecord.put(HoodieSchema.Variant.VARIANT_METADATA_FIELD,
ByteBuffer.wrap(variant.getMetadata()));
- unshreddedRecord.put(HoodieSchema.Variant.VARIANT_VALUE_FIELD,
ByteBuffer.wrap(variant.getValue()));
+ /** Wrap a fully built {@link Variant} into the unshredded {metadata, value}
Avro record. */
+ private GenericRecord unshredded(Variant variant) {
+ GenericRecord record = new GenericData.Record(unshreddedSchema);
+ record.put(VARIANT_METADATA_FIELD, ByteBuffer.wrap(variant.getMetadata()));
+ record.put(VARIANT_VALUE_FIELD, ByteBuffer.wrap(variant.getValue()));
+ return record;
+ }
+
+ private GenericRecord shred(Variant variant, HoodieSchema.Variant shredded) {
+ return provider.shredVariantRecord(unshredded(variant),
shredded.getAvroSchema(), shredded);
+ }
- Schema shreddedSchema = shredded.getAvroSchema();
- GenericRecord shreddedRecord =
provider.shredVariantRecord(unshreddedRecord, shreddedSchema, shredded);
- GenericRecord rebuilt = provider.rebuildVariantRecord(shreddedRecord,
shreddedSchema, unshreddedSchema);
+ private Variant rebuild(GenericRecord shreddedRecord, HoodieSchema.Variant
shredded) {
+ GenericRecord rebuilt =
+ provider.rebuildVariantRecord(shreddedRecord,
shredded.getAvroSchema(), unshreddedSchema);
+ return new Variant(toBytes(rebuilt.get(VARIANT_VALUE_FIELD)),
toBytes(rebuilt.get(VARIANT_METADATA_FIELD)));
+ }
- Variant rebuiltVariant = new Variant(
- toBytes(rebuilt.get(HoodieSchema.Variant.VARIANT_VALUE_FIELD)),
- toBytes(rebuilt.get(HoodieSchema.Variant.VARIANT_METADATA_FIELD)));
- assertEquals(variant.toJson(ZoneOffset.UTC),
rebuiltVariant.toJson(ZoneOffset.UTC),
- "variant did not round-trip through shred/rebuild for: " + json);
+ private void assertRoundTrips(Variant variant, HoodieSchema.Variant
shredded) {
+ Variant rebuilt = rebuild(shred(variant, shredded), shredded);
+ assertEquals(variant.toJson(ZoneOffset.UTC),
rebuilt.toJson(ZoneOffset.UTC),
+ "variant did not round-trip through shred/rebuild");
+ }
+
+ /** Parse json to a variant, shred it, rebuild it, assert the json
round-trips. */
+ private void assertRoundTrips(String json, HoodieSchema.Variant shredded)
throws Exception {
+ assertRoundTrips(VariantBuilder.parseJson(json, false), shredded);
}
private void assertScalarRoundTrips(String json, HoodieSchema typedValue)
throws Exception {
assertRoundTrips(json, HoodieSchema.createVariantShredded(typedValue));
}
+ /**
+ * Shred {@code variant} into a scalar {@code typedValue} schema, assert the
value fully shredded
+ * (into {@code typed_value}, exactly {@code expectedTypedValue}, no
residual {@code value}) and
+ * round-trips back to the original variant.
+ */
+ private void assertScalarShredsTo(Variant variant, HoodieSchema typedValue,
Object expectedTypedValue) {
+ HoodieSchema.Variant shredded =
HoodieSchema.createVariantShredded(typedValue);
+ GenericRecord shreddedRecord = shred(variant, shredded);
+ assertNotNull(shreddedRecord.get(VARIANT_METADATA_FIELD), "shredded record
must carry metadata");
+ assertNull(shreddedRecord.get(VARIANT_VALUE_FIELD), "a matching scalar
leaves no residual value");
+ assertEquals(expectedTypedValue,
shreddedRecord.get(VARIANT_TYPED_VALUE_FIELD),
+ "scalar was not shredded into typed_value as expected");
+ assertEquals(variant.toJson(ZoneOffset.UTC), rebuild(shreddedRecord,
shredded).toJson(ZoneOffset.UTC),
+ "scalar did not round-trip through shred/rebuild");
+ }
+
+ /**
+ * Shred {@code variant} against a scalar {@code typedValue} it does not
match: assert it is NOT
+ * shredded (typed_value stays null, the value lands in the residual {@code
value}) yet still
+ * round-trips. Exercises the "decline to shred, keep in residual" fallbacks.
+ */
+ private void assertStaysInResidual(Variant variant, HoodieSchema typedValue)
{
+ HoodieSchema.Variant shredded =
HoodieSchema.createVariantShredded(typedValue);
+ GenericRecord shreddedRecord = shred(variant, shredded);
+ assertNull(shreddedRecord.get(VARIANT_TYPED_VALUE_FIELD), "value should
not have been shredded");
+ assertNotNull(shreddedRecord.get(VARIANT_VALUE_FIELD), "unshredded value
must survive in residual");
+ assertEquals(variant.toJson(ZoneOffset.UTC), rebuild(shreddedRecord,
shredded).toJson(ZoneOffset.UTC),
+ "residual value did not round-trip through shred/rebuild");
+ }
+
+ private static Variant scalar(java.util.function.Consumer<VariantBuilder>
append) {
+ VariantBuilder builder = new VariantBuilder(false);
+ append.accept(builder);
+ return builder.result();
+ }
+
+ //
---------------------------------------------------------------------------
+ // Scalar leaf types: one per branch of avroTypeToScalarType /
convertScalarToAvro.
Review Comment:
Addressed: comment now reads "one per reachable branch" and names the
unreachable Byte/Short widening arms; added `enumLeafIsNotShredded` and
`noTypedValueSchemaRoundTrips`. Dead-code deletion deferred to #19442.
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