[jira] [Commented] (SPARK-12855) Remove parser pluggability

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

    [ https://issues.apache.org/jira/browse/SPARK-12855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15197064#comment-15197064 ] 

Apache Spark commented on SPARK-12855:
--------------------------------------

User 'adrian-wang' has created a pull request for this issue:
https://github.com/apache/spark/pull/11758

> Remove parser pluggability
> --------------------------
>
>                 Key: SPARK-12855
>                 URL: https://issues.apache.org/jira/browse/SPARK-12855
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Reynold Xin
>            Assignee: Reynold Xin
>             Fix For: 2.0.0
>
>
> This pull request removes the public developer parser API for external parsers. Given everything a parser depends on (e.g. logical plans and expressions) are internal and not stable, external parsers will break with every release of Spark. It is a bad idea to create the illusion that Spark actually supports pluggable parsers. In addition, this also reduces incentives for 3rd party projects to contribute parse improvements back to Spark.
> The number of applications that are using this feature is small (as far as I know it came down from two to one as of Jan 2016, and will be 0 once we have better ansi SQL support).



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