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https://issues.apache.org/jira/browse/DRILL-2071?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kristine Hahn resolved DRILL-2071.
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Resolution: Fixed
> Better documentation for JSON reader all_text_mode option
> ---------------------------------------------------------
>
> Key: DRILL-2071
> URL: https://issues.apache.org/jira/browse/DRILL-2071
> Project: Apache Drill
> Issue Type: Bug
> Components: Documentation
> Reporter: Jason Altekruse
> Assignee: Kristine Hahn
> Fix For: 0.7.0
>
>
> Currently Drill will fail by default to read JSON files with changes in
> schema, or with several different data types in a list. These files can
> however be read if the store.json.all_text_mode option is set to true. This
> option will read all data from the JSON files as varchar and from here the
> data can be casted to an appropriate type (or filtered out in the case where
> a cast to numeric is desired but some of the data in the column is a string
> or boolean type). This is only mentioned on the wiki in this page, but does
> not really describe all of the use cases of the feature.
> https://cwiki.apache.org/confluence/display/DRILL/Analyzing+Yelp+JSON+Data+with+Apache+Drill
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