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https://issues.apache.org/jira/browse/HCATALOG-459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428261#comment-13428261
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Feng Peng commented on HCATALOG-459:
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It seems that the reason is that HCatalog depends on Pig 0.8 which doesn't
support map value schemas. Any plan to upgrade to Pig 0.9?
> HCatalog (Pig adaptor) should report the schema of map values of complex types
> ------------------------------------------------------------------------------
>
> Key: HCATALOG-459
> URL: https://issues.apache.org/jira/browse/HCATALOG-459
> Project: HCatalog
> Issue Type: Bug
> Components: pig
> Affects Versions: 0.4, 0.5
> Reporter: Feng Peng
>
> Pig allows map values to be complex types, but current hcatalog-pig-adaptor
> ignores the schema of map values. When underlying data has the schema for the
> map values, HCatalog should report the schema in HCatSchema.
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