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From "Kristine (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-2071) Better documentation for JSON reader all_text_mode option
Date Wed, 28 Jan 2015 20:50:34 GMT

    [ https://issues.apache.org/jira/browse/DRILL-2071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14295838#comment-14295838

Kristine commented on DRILL-2071:

What are all the use cases?

> 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: Bridget Bevens
>             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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