duongcongtoai commented on issue #17445:
URL: https://github.com/apache/datafusion/issues/17445#issuecomment-3406651908
```
let dict_concat = !arrays
.windows(2)
.all(|a|
a[0].child_data()[0].ptr_eq(&a[1].child_data()[0]));
```
something during execution change the address of the child_data array, or
this is the side effect of spilling
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