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https://issues.apache.org/jira/browse/PIG-5197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15949920#comment-15949920
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Rohini Palaniswamy commented on PIG-5197:
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Why not make PigNullableWritable implement Serializable?
> Replace IndexedKey with PigNullableWritable in spark branch
> -----------------------------------------------------------
>
> Key: PIG-5197
> URL: https://issues.apache.org/jira/browse/PIG-5197
> Project: Pig
> Issue Type: Sub-task
> Components: spark
> Reporter: liyunzhang_intel
> Fix For: spark-branch
>
>
> The function of IndexedKey and PigNullableWritable is similar.
> The difference between these two is IndexedKey contains Index,key while
> PigNullableWritable contains index,key,value.
> Besides,the comparators for PigNullableWritable have lot of conditions for
> the different data types taken care of and IndexedKey can miss some of that.
> We can try to replace IndexedKey with PigNullableWritable.
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