amogh-jahagirdar commented on code in PR #13614:
URL: https://github.com/apache/iceberg/pull/13614#discussion_r2226791798
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core/src/main/java/org/apache/iceberg/RemoveSnapshots.java:
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@@ -390,4 +386,43 @@ private void cleanExpiredSnapshots() {
cleanupStrategy.cleanFiles(base, current);
}
+
+ private void validateCleanupCanBeIncremental(TableMetadata current) {
Review Comment:
I don't think we'd ever be in a state where only a non main ref is defined
because at minimum the `main` branch would always be defined; even if it's
empty. so the exactly one check is OK i think. I could make it more explicit
though
>We also need to ensure that there were no non-main snapshots before
expiration. Those need to be cleaned up through reachability analysis.
The ancestry check in the method in 407 would cover this because we'd check
that we can't do incremental cleanup for any snapshots that are outside of
main?
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