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From "Richard Ding (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-3609) ClassCastException when calling compareTo method on AvroBagWrapper 
Date Tue, 24 Dec 2013 00:15:50 GMT

    [ https://issues.apache.org/jira/browse/PIG-3609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856041#comment-13856041
] 

Richard Ding commented on PIG-3609:
-----------------------------------

[~cheolsoo], checking size is an optimization, this is also what DefaultAbstractBag implements.


+1 on the patch.

> ClassCastException when calling compareTo method on AvroBagWrapper 
> -------------------------------------------------------------------
>
>                 Key: PIG-3609
>                 URL: https://issues.apache.org/jira/browse/PIG-3609
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.12.0
>            Reporter: Richard Ding
>            Assignee: Richard Ding
>            Priority: Minor
>         Attachments: PIG-3609.patch, PIG-3609_2.patch, PIG-3609_3.patch
>
>
> One got the following exception when calling compareTo method on AvroBagWrapper with
an AvroBagWrapper object:
> {code}
> java.lang.ClassCastException: org.apache.pig.impl.util.avro.AvroBagWrapper incompatible
with java.util.Collection
>         at org.apache.avro.generic.GenericData.compare(GenericData.java:786)
>         at org.apache.avro.generic.GenericData.compare(GenericData.java:760)
>         at org.apache.pig.impl.util.avro.AvroBagWrapper.compareTo(AvroBagWrapper.java:78)
> {code}
> Looking at the code, it compares objects with different types:
> {code}
> return GenericData.get().compare(theArray, o, theArray.getSchema());
> {code}



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