manuzhang commented on code in PR #14264:
URL: https://github.com/apache/iceberg/pull/14264#discussion_r3426929256
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core/src/main/java/org/apache/iceberg/BaseIncrementalChangelogScan.java:
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@@ -133,13 +205,701 @@ private static Map<Long, Integer>
computeSnapshotOrdinals(Deque<Snapshot> snapsh
return snapshotOrdinals;
}
+ /**
+ * Builds a delete file index for existing deletes that were present before
the start snapshot.
+ * These deletes should be applied to data files but should not generate
DELETE changelog rows.
+ * Uses manifest pruning and caching to optimize performance.
+ */
+ private DeleteFileIndex buildExistingDeleteIndex(Long
fromSnapshotIdExclusive) {
Review Comment:
existing delete index not built when there's no equality deletes such that
pre-range position deletes will be missing.
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