[jira] [Assigned] (SPARK-12939) migrate encoder resolution to Analyzer

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-12939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-12939:
------------------------------------

    Assignee:     (was: Apache Spark)

> migrate encoder resolution to Analyzer
> --------------------------------------
>
>                 Key: SPARK-12939
>                 URL: https://issues.apache.org/jira/browse/SPARK-12939
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Wenchen Fan
>
> in https://github.com/apache/spark/pull/10747, we decided to use expressions instead of encoders in query plans, to make the dataset easier to optimize and make encoder resolution less hacky.
> However, that PR didn't finish the migration completely and cause some regressions which are hidden due to the lack of end-to-end test.
> We should fix it by completing the migration and add end-to-end test for it



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