NVIDIA / NVIDIA/cudf

[FEA] enhancement: not allow getData from ColumnVector of nested type

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#9,497 5 comments 0 reactions 0 assignees View on GitHub
feature request Java
Dominant language
C++
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Description

**Is your feature request related to a problem? Please describe.**
When getData from a ColumnVector of nested type such as LIST, the address will be null, and that will trigger a NPE.

**Describe the solution you'd like**
When calling getData API from a ColumnVector, check the data type, if it's nested type, throw exception to inform that no data could be get from a nested type ColumnVector.

**Additional context**

```scala
// assume this columnVector is of nested type : LIST
val data = columnVector.getData // null
val addr = childData.getAddress
```

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