deniskuzZ commented on code in PR #12528:
URL: https://github.com/apache/iceberg/pull/12528#discussion_r1996252807
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api/src/main/java/org/apache/iceberg/types/Comparators.java:
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@@ -108,6 +109,15 @@ public int compare(StructLike o1, StructLike o2) {
return 0;
}
+ if (o1 instanceof StructProjection && o2 instanceof StructProjection) {
Review Comment:
Updated the PR to compare the number of projected fields.
The issue is that 2 projections with null and missing field values are
considered equals. That leads to incorrect PartitionMap construction:
Below PartitionProjections are equal, so in PartitionMap we'll have just 1
random entry:
````
"ice_orc(company_id=null)"
"ice_orc(company_id=null/dept_id=null)"
"ice_orc(company_id=null/dept_id=null/team_id=null)"
````
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