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https://issues.apache.org/jira/browse/ARROW-1817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16271658#comment-16271658
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ASF GitHub Bot commented on ARROW-1817:
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BryanCutler opened a new pull request #1375: ARROW-1817: [Java] Configure
JsonReader to read floating point NaN values
URL: https://github.com/apache/arrow/pull/1375
The last upgrade of the Jackson JSON library changed behavior to no longer
allow reading of "NaN" values by default. This change configures the JSON
generator and parser to allow for NaN values (unquoted) alongside standard
floating point numbers. A test was added for JSON writing/reading and modified
the test for Arrow file and stream .
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> Configure JsonFileReader to read NaN for floats
> -----------------------------------------------
>
> Key: ARROW-1817
> URL: https://issues.apache.org/jira/browse/ARROW-1817
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Java - Vectors
> Reporter: Bryan Cutler
> Assignee: Bryan Cutler
> Labels: pull-request-available
> Fix For: 0.8.0
>
>
> There is a Spark unit test that includes reading JSON floating point values
> that are NaN's (validity bit is set). The Jackson parser in Arrow version
> 0.4 allowed for these by default, but looks like the updated version requires
> the conf {{ALLOW_NON_NUMERIC_NUMBERS}} to allow this.
> https://fasterxml.github.io/jackson-core/javadoc/2.2.0/com/fasterxml/jackson/core/JsonParser.Feature.html#ALLOW_NON_NUMERIC_NUMBERS
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