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https://issues.apache.org/jira/browse/ARROW-7021?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Micah Kornfield resolved ARROW-7021.
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Fix Version/s: 1.0.0
Resolution: Fixed
Issue resolved by pull request 5802
[https://github.com/apache/arrow/pull/5802]
> [Java] UnionFixedSizeListWriter decimal type should check writer index
> ----------------------------------------------------------------------
>
> Key: ARROW-7021
> URL: https://issues.apache.org/jira/browse/ARROW-7021
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java
> Reporter: Ji Liu
> Assignee: Ji Liu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> {{UnionFixedSizeListWriter}} should check writer index for decimal type (just
> as other types) to ensure the values written not exceed listSize.
> Otherwise, the writer may continue to write data into it’s underlying vector
> quietly even the the writer.idx() > listSize * index.
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