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