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https://issues.apache.org/jira/browse/DRILL-7979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Charles Givre resolved DRILL-7979.
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Resolution: Fixed
> Self-Closing XML Tags Cause Schema Change Exceptions
> ----------------------------------------------------
>
> Key: DRILL-7979
> URL: https://issues.apache.org/jira/browse/DRILL-7979
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Other
> Affects Versions: 1.19.0
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Major
> Fix For: 1.20.0
>
>
> Self closing XML tags are dealt with strangely by java's streaming parser.
> If you have data where you have one row containing a self closing XML tag foo
> (<foo/>) but then in the next row `foo` contains a map or other nested field,
> Drill will throw a schema change exception.
> This proposed fix causes Drill to ignore self-closing tags unless they have
> attributes, which allows data like this to be successfully queried.
>
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