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https://issues.apache.org/jira/browse/HIVE-590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12726572#action_12726572
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Prasad Chakka commented on HIVE-590:
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IMO, HiveServer should return a Table object for the results set instead of
this new object.
> Pass type information in genFileSinkPlan
> ----------------------------------------
>
> Key: HIVE-590
> URL: https://issues.apache.org/jira/browse/HIVE-590
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Raghotham Murthy
> Assignee: Namit Jain
> Fix For: 0.4.0
>
> Attachments: hive.590.1.patch, hive.590.2.patch
>
>
> Right now only column names are being passed between semanticanalyzer and
> fetchtask. Once type information is passed, we can use LazySerDe to serialize
> the data (into json) in Driver.getResults().
> Driver.getSchema() should then return a new thrift type ResultSchema instead
> of String:
> {code}
> struct ResultSchema {
> // column names, types, comments
> 1: list<hive_metastore.FieldSchema> fieldSchemas,
> // delimiters etc
> 2: map<string, string> properties
> }
> {code}
> Once this is done, the jdbc client can instantiate a simplified serde from
> the ResultSchema and parse the query results.
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