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From "Swarnim Kulkarni (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10697) ObjecInspectorConvertors#UnionConvertor does a faulty conversion
Date Wed, 13 May 2015 16:22:59 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14542182#comment-14542182
] 

Swarnim Kulkarni commented on HIVE-10697:
-----------------------------------------

Also seems like we have unit tests missing for the UnionConverter as well that should be added
as a part of this JIRA.

> ObjecInspectorConvertors#UnionConvertor does a faulty conversion
> ----------------------------------------------------------------
>
>                 Key: HIVE-10697
>                 URL: https://issues.apache.org/jira/browse/HIVE-10697
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>            Reporter: Swarnim Kulkarni
>            Assignee: Swarnim Kulkarni
>
> Currently the UnionConvertor in the ObjectInspectorConvertors class has an issue with
the convert method where it attempts to convert the objectinspector itself instead of converting
the field.[1]. This should be changed to convert the field itself. This could result in a
ClassCastException as shown below:
> {code}
> Caused by: java.lang.ClassCastException: org.apache.hadoop.hive.serde2.lazy.objectinspector.LazyUnionObjectInspector
cannot be cast to org.apache.hadoop.hive.serde2.lazy.LazyString
> 	at org.apache.hadoop.hive.serde2.lazy.objectinspector.primitive.LazyStringObjectInspector.getPrimitiveWritableObject(LazyStringObjectInspector.java:51)
> 	at org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorConverter$TextConverter.convert(PrimitiveObjectInspectorConverter.java:391)
> 	at org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorConverter$TextConverter.convert(PrimitiveObjectInspectorConverter.java:338)
> 	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters$UnionConverter.convert(ObjectInspectorConverters.java:456)
> 	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters$StructConverter.convert(ObjectInspectorConverters.java:395)
> 	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters$MapConverter.convert(ObjectInspectorConverters.java:539)
> 	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters$StructConverter.convert(ObjectInspectorConverters.java:395)
> 	at org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.readRow(MapOperator.java:154)
> 	at org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.access$200(MapOperator.java:127)
> 	at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:518)
> 	... 9 more
> {code}
> [1] https://github.com/apache/hive/blob/master/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/ObjectInspectorConverters.java#L466



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