difin commented on PR #5792:
URL: https://github.com/apache/hive/pull/5792#issuecomment-2840498605
@okumin @deniskuzZ
This works except for one case and I’m not sure how we can do it.
The case where it doesn't work:
Let’s say you have a table with partition evolution and the partition specs
are:
```
Spec_Id, Partition Schema
0, {field_a: String}
1,. {field_a: String, b: String}
```
And let’s say there are 2 partitions on disk:
```
{a=NULL}
{a=NULL, b=NULL}
```
When calculating partition hash, we pass Iceberg partition struct, which
contain fields from all partition specs, so we send these inputs to computeHash
methods for the 2 different partitions:
```
{a=NULL, b=NULL}
{a=NULL, b=NULL}
```
and the partition hash becomes the same for both partitions..
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