findinpath commented on code in PR #18338:
URL: https://github.com/apache/iceberg/pull/18338#discussion_r4163810196
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core/src/main/java/org/apache/iceberg/ManifestReader.java:
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@@ -413,6 +413,16 @@ private static boolean requireStatsProjection(Expression
rowFilter, Collection<S
&& !columns.containsAll(STATS_COLUMNS);
}
+ private F withFilterableStats(F contentFile) {
+ if (contentFile.content() == FileContent.EQUALITY_DELETES
+ && !contentFile.equalityFieldIds().isEmpty()) {
+ // only equality delete's equality-field stats are relevant for pruning
+ return
contentFile.copyWithStats(Set.copyOf(contentFile.equalityFieldIds()));
Review Comment:
> Is there a specific writer that does this (spark? flink? something else?)
[Oracle GoldenGate ](https://www.oracle.com/integration/goldengate/)
> Do you happen to know how common writing equality delete files with more
fields than just the equality delete fields is?
I don't know.
It seems though that it has escaped the apache/iceberg community to add
support for this rather exotic handling. I'm guessing it is rather uncommon.
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