yihua commented on code in PR #5430:
URL: https://github.com/apache/hudi/pull/5430#discussion_r858186088
##########
hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/MergeOnReadSnapshotRelation.scala:
##########
@@ -144,6 +186,15 @@ class MergeOnReadSnapshotRelation(sqlContext: SQLContext,
fsView.getLatestMergedFileSlicesBeforeOrOn(relativePath,
queryTimestamp).iterator().asScala.toSeq
}
}
+
+ protected def pruneSchemaForMergeSkipping(requiredSchema:
HoodieTableSchema): HoodieTableSchema = {
+ val mandatoryFieldNames = mandatoryFields.map(fieldName =>
HoodieAvroUtils.getRootLevelFieldName(fieldName))
+ val prunedStructSchema = StructType(
+ requiredSchema.structTypeSchema.fields.filterNot(f =>
mandatoryFieldNames.contains(f.name))
+ )
Review Comment:
We should not exclude the root fields from `mandatoryFieldNames` since the
query columns may also contain the same root field.
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