[
https://issues.apache.org/jira/browse/SPARK-4782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14567279#comment-14567279
]
Jianshi Huang commented on SPARK-4782:
--------------------------------------
Thanks Luca for the clever fix!
I also noticed that the schema inference in JsonRDD is too JSON specific. As
JSON's datatype is quite limited.
Jianshi
> Add inferSchema support for RDD[Map[String, Any]]
> -------------------------------------------------
>
> Key: SPARK-4782
> URL: https://issues.apache.org/jira/browse/SPARK-4782
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Jianshi Huang
> Priority: Minor
>
> The best way to convert RDD[Map[String, Any]] to SchemaRDD currently seems to
> be converting each Map to JSON String first and use JsonRDD.inferSchema on it.
> It's very inefficient.
> Instead of JsonRDD, RDD[Map[String, Any]] is a better common denominator for
> Schemaless data as adding Map like interface to any serialization format is
> easy.
> So please add inferSchema support to RDD[Map[String, Any]]. *Then for any new
> serialization format we want to support, we just need to add a Map interface
> wrapper to it*
> Jianshi
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
