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https://issues.apache.org/jira/browse/ARROW-1619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16184783#comment-16184783
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ASF GitHub Bot commented on ARROW-1619:
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Github user icexelloss commented on the issue:
https://github.com/apache/arrow/pull/1140
> I think the real test for this is that you can call setValueCount on the
vector at the end and it won't fill it
> with empty values for the VarChar/Binary cases or corrupt the offset
vector for ListVector. The existing JSON tests cover this pretty well, but
looks like there's nothing for VarBinaryVector so I can add that.
Sorry I am a bit confused. The current `TestJSONFile` doesn't cover this
bug, right?
> [Java] Correctly set "lastSet" for variable vectors in JsonReader
> -----------------------------------------------------------------
>
> Key: ARROW-1619
> URL: https://issues.apache.org/jira/browse/ARROW-1619
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java - Vectors
> Reporter: Bryan Cutler
> Assignee: Bryan Cutler
> Labels: pull-request-available
>
> The Arrow Java JsonFileReader does not correctly set "lastSet" in
> VariableWidthVectors which makes reading inner vectors overly complicated.
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