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https://issues.apache.org/jira/browse/NIFI-5765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16668048#comment-16668048
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ASF subversion and git services commented on NIFI-5765:
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Commit db966cf34879ea0d750ae7ab72344b228f889f59 in nifi's branch
refs/heads/master from Joe Percivall
[ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=db966cf ]
NIFI-5765 Fixing WriteJsonResult to use chosenDataType when writing an Array
value
Fixing the same bug in PutElasticsearchHttpRecord.java
This closes #3114.
Signed-off-by: Koji Kawamura <ijokaruma...@apache.org>
> WriteJsonResult fails with Class Cast Exception when Choice data type
> resolves to Array
> ---------------------------------------------------------------------------------------
>
> Key: NIFI-5765
> URL: https://issues.apache.org/jira/browse/NIFI-5765
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 1.8.0
> Reporter: Joseph Percivall
> Assignee: Joseph Percivall
> Priority: Major
> Fix For: 1.9.0
>
> Attachments: Screen Shot 2018-10-29 at 2.35.50 PM.png,
> WriteJsonResult_Choice_Array_example.xml
>
>
> The problem is this line[1]. For the casting, it uses the passed in value
> instead of the chosen data type.
> A template demonstrating the problem is attached. The corner case is hit when
> there is a choice of data types, and the data type chosen is Array. It
> properly does everything else but fails when casting it due to:
> org.apache.nifi.serialization.record.type.ChoiceDataType cannot be cast to
> org.apache.nifi.serialization.record.type.ArrayDataType.
> [1]
> https://github.com/apache/nifi/blob/master/nifi-nar-bundles/nifi-standard-services/nifi-record-serialization-services-bundle/nifi-record-serialization-services/src/main/java/org/apache/nifi/json/WriteJsonResult.java#L379
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