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https://issues.apache.org/jira/browse/PIG-5088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15819394#comment-15819394
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Koji Noguchi commented on PIG-5088:
-----------------------------------
+1
> HashValuePartitioner has skew when there is only map fields
> -----------------------------------------------------------
>
> Key: PIG-5088
> URL: https://issues.apache.org/jira/browse/PIG-5088
> Project: Pig
> Issue Type: Bug
> Reporter: Rohini Palaniswamy
> Assignee: Rohini Palaniswamy
> Fix For: 0.17.0, 0.16.1
>
> Attachments: PIG-5088-1.patch
>
>
> One user who just did union of map fields, got a skew with everything going
> to one input file as hashcode for map was calculated on the size. [~knoguchi]
> pointed out that my assumption of map hashcode being non-deterministic and
> can change with jdk versions is wrong as it just does a sum of hashcode of
> its entries.
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