dramaticlly commented on code in PR #7539:
URL: https://github.com/apache/iceberg/pull/7539#discussion_r1191811403
##########
core/src/main/java/org/apache/iceberg/BaseEntriesTable.java:
##########
@@ -125,31 +130,107 @@ ManifestFile manifest() {
@Override
public CloseableIterable<StructLike> rows() {
- // Project data-file fields
- CloseableIterable<StructLike> prunedRows;
- if (manifest.content() == ManifestContent.DATA) {
- prunedRows =
+ Types.NestedField readableMetricsField =
projection.findField(MetricsUtil.READABLE_METRICS);
+
+ if (readableMetricsField == null) {
+ CloseableIterable<StructLike> entryAsStruct =
CloseableIterable.transform(
- ManifestFiles.read(manifest, io).project(fileSchema).entries(),
- file -> (GenericManifestEntry<DataFile>) file);
+ entries(fileSchema),
+ entry -> (GenericManifestEntry<? extends ContentFile<?>>)
entry);
+
+ StructProjection structProjection = projectNonReadable(projection);
+ return CloseableIterable.transform(entryAsStruct,
structProjection::wrap);
} else {
- prunedRows =
- CloseableIterable.transform(
- ManifestFiles.readDeleteManifest(manifest, io, specsById)
- .project(fileSchema)
- .entries(),
- file -> (GenericManifestEntry<DeleteFile>) file);
+ Set<Integer> readableMetricsIds =
TypeUtil.getProjectedIds(readableMetricsField.type());
Review Comment:
thank you @szehon-ho . that does look much easier to follow the logic. I
changed a bit since checkStyle fail on some method variable shadow class
variable but mostly followed your approach and appreciate your help!
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