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https://issues.apache.org/jira/browse/HIVE-12373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Navis updated HIVE-12373:
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Attachment: HIVE-12373.1.patch.txt
> Interner should return identical map or list
> --------------------------------------------
>
> Key: HIVE-12373
> URL: https://issues.apache.org/jira/browse/HIVE-12373
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Priority: Minor
> Attachments: HIVE-12373.1.patch.txt
>
>
> Currently, HiveStringUtils.intern(map/list) returns new instance of map or
> list. But it would break some usage style of code something like below (it's
> spark code in HiveMetastoreCatalog)
> {code}
> val serdeParameters = new java.util.HashMap[String, String]()
> serdeInfo.setParameters(serdeParameters)
> // these properties will be gone
> table.serdeProperties.foreach { case (k, v) => serdeParameters.put(k, v) }
> p.storage.serdeProperties.foreach { case (k, v) => serdeParameters.put(k, v) }
> {code}
> Luckily for spark, interner was not applied to released version of hive
> (1.2.0, 1.2.1) by mistake. But it would make problem in someday.
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