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https://issues.apache.org/jira/browse/SPARK-23284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16348145#comment-16348145
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Wenchen Fan commented on SPARK-23284:
-------------------------------------
Since this defines the "return null" behavior for `ColumnVector`
implementations, it's good to get this in before 2.3 release. But technically
Spark won't call `ColumnVector.getXXX` if that slot is null, so it's OK to
leave it to 2.4. Thus I'm not going to mark this as a blocker. cc [~sameerag]
> Document several get API of ColumnVector's behavior when accessing null slot
> ----------------------------------------------------------------------------
>
> Key: SPARK-23284
> URL: https://issues.apache.org/jira/browse/SPARK-23284
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Liang-Chi Hsieh
> Priority: Major
>
> We should clearly document the behavior of some ColumnVector get APIs such as
> getBinary, getStruct, getArray, etc., when accessing a null slot. Those APIs
> should return null if the slot is null.
>
>
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