spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Patrick Wendell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-5528) Support schema merging while reading Parquet files
Date Thu, 12 Feb 2015 04:44:12 GMT

     [ https://issues.apache.org/jira/browse/SPARK-5528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Wendell updated SPARK-5528:
-----------------------------------
    Assignee: Cheng Lian

> Support schema merging while reading Parquet files
> --------------------------------------------------
>
>                 Key: SPARK-5528
>                 URL: https://issues.apache.org/jira/browse/SPARK-5528
>             Project: Spark
>          Issue Type: Improvement
>            Reporter: Cheng Lian
>            Assignee: Cheng Lian
>             Fix For: 1.3.0
>
>
> Spark 1.2.0 and prior versions only reads Parquet schema from {{_metadata}} or a random
Parquet part-file, and assumes all part-files share exactly the same schema.
> In practice, it's common that users append new columns to existing Parquet schema. Parquet
has native schema merging support for such scenarios. Spark SQL should also support this.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org


Mime
View raw message