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Posted to dev@hive.apache.org by "Navis (JIRA)" <ji...@apache.org> on 2015/11/10 01:48:10 UTC

[jira] [Created] (HIVE-12373) Interner should return identical map or list

Navis created HIVE-12373:
----------------------------

             Summary: 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


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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