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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2016/01/18 22:56:39 UTC
[jira] [Resolved] (SPARK-12855) Remove parser pluggability
[ https://issues.apache.org/jira/browse/SPARK-12855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Reynold Xin resolved SPARK-12855.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.0.0
> 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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