[GitHub] [hudi] alexeykudinkin commented on a diff in pull request #5430: [WIP][Stacked on 5428] Optimize out mandatory columns when no merging is performed

[GitBox <gi...@apache.org>]

alexeykudinkin commented on code in PR #5430:
URL: https://github.com/apache/hudi/pull/5430#discussion_r859230135


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hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/MergeOnReadSnapshotRelation.scala:
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@@ -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:
   Yeah, realized that as well. This has already been addressed.



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