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https://issues.apache.org/jira/browse/HIVE-7075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14004582#comment-14004582
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Harsh J commented on HIVE-7075:
-------------------------------
Can a test case be added as well, aside of just the fix, so this does not
regress in future?
bq. Cannot sure it's right to use lower cased field names.
Hive explicitly appears to make them lower case though?
> JsonSerde raises NullPointerException when object key is not lower case
> -----------------------------------------------------------------------
>
> Key: HIVE-7075
> URL: https://issues.apache.org/jira/browse/HIVE-7075
> Project: Hive
> Issue Type: Bug
> Components: HCatalog, Serializers/Deserializers
> Affects Versions: 0.12.0
> Reporter: Yibing Shi
> Attachments: HIVE-7075.1.patch.txt
>
>
> We have noticed that the JsonSerde produces a NullPointerException if a JSON
> object has a key value that is not lower case. For example. Assume we have
> the file "one.json":
> { "empId" : 123, "name" : "John" }
> { "empId" : 456, "name" : "Jane" }
> hive> CREATE TABLE emps (empId INT, name STRING)
> ROW FORMAT SERDE "org.apache.hive.hcatalog.data.JsonSerDe";
> hive> LOAD DATA LOCAL INPATH 'one.json' INTO TABLE emps;
> hive> SELECT * FROM emps;
> Failed with exception java.io.IOException:java.lang.NullPointerException
> --------
> Notice, it seems to work if the keys are lower case. Assume we have the file
> 'two.json':
> { "empid" : 123, "name" : "John" }
> { "empid" : 456, "name" : "Jane" }
> hive> DROP TABLE emps;
> hive> CREATE TABLE emps (empId INT, name STRING)
> ROW FORMAT SERDE "org.apache.hive.hcatalog.data.JsonSerDe";
> hive> LOAD DATA LOCAL INPATH 'two.json' INTO TABLE emps;
> hive> SELECT * FROM emps;
> OK
> 123 John
> 456 Jane
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