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Posted to dev@hive.apache.org by "Yibing Shi (JIRA)" <ji...@apache.org> on 2014/05/16 13:19:11 UTC

[jira] [Commented] (HIVE-7075) JsonSerde raises NullPointerException when object key is not lower case

    [ https://issues.apache.org/jira/browse/HIVE-7075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13999640#comment-13999640 ] 

Yibing Shi commented on HIVE-7075:
----------------------------------

Suggest to fix this by:
- String fieldName = p.getText();
+ String fieldName = p.getText().toLowerCase();

> 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: Serializers/Deserializers
>    Affects Versions: 0.12.0
>            Reporter: Yibing Shi
>
> 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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