wypoon commented on code in PR #10935:
URL: https://github.com/apache/iceberg/pull/10935#discussion_r1803801850
##########
core/src/main/java/org/apache/iceberg/BaseIncrementalChangelogScan.java:
##########
@@ -63,33 +61,39 @@ protected CloseableIterable<ChangelogScanTask> doPlanFiles(
return CloseableIterable.empty();
}
- Set<Long> changelogSnapshotIds = toSnapshotIds(changelogSnapshots);
+ Map<Long, Integer> snapshotOrdinals =
computeSnapshotOrdinals(changelogSnapshots);
- Set<ManifestFile> newDataManifests =
+ Iterable<CloseableIterable<ChangelogScanTask>> plans =
FluentIterable.from(changelogSnapshots)
- .transformAndConcat(snapshot ->
snapshot.dataManifests(table().io()))
- .filter(manifest ->
changelogSnapshotIds.contains(manifest.snapshotId()))
- .toSet();
-
- ManifestGroup manifestGroup =
- new ManifestGroup(table().io(), newDataManifests, ImmutableList.of())
- .specsById(table().specs())
- .caseSensitive(isCaseSensitive())
- .select(scanColumns())
- .filterData(filter())
- .filterManifestEntries(entry ->
changelogSnapshotIds.contains(entry.snapshotId()))
- .ignoreExisting()
- .columnsToKeepStats(columnsToKeepStats());
-
- if (shouldIgnoreResiduals()) {
- manifestGroup = manifestGroup.ignoreResiduals();
- }
-
- if (newDataManifests.size() > 1 && shouldPlanWithExecutor()) {
- manifestGroup = manifestGroup.planWith(planExecutor());
- }
-
- return manifestGroup.plan(new
CreateDataFileChangeTasks(changelogSnapshots));
+ .transform(
+ snapshot -> {
+ List<ManifestFile> dataManifests =
snapshot.dataManifests(table().io());
+ List<ManifestFile> deleteManifests =
snapshot.deleteManifests(table().io());
+
+ ManifestGroup manifestGroup =
+ new ManifestGroup(table().io(), dataManifests,
deleteManifests)
Review Comment:
I went snapshot by snapshot as it was the easiest to reason with. For sure
we need to consider more than just newly added manifests. For each snapshot, we
need to consider existing data files if there are new deletes applicable to
them.
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