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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:14:39 UTC
[jira] [Resolved] (SPARK-18727) Support schema evolution as new
files are inserted into table
[ https://issues.apache.org/jira/browse/SPARK-18727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon resolved SPARK-18727.
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Resolution: Incomplete
> Support schema evolution as new files are inserted into table
> -------------------------------------------------------------
>
> Key: SPARK-18727
> URL: https://issues.apache.org/jira/browse/SPARK-18727
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Eric Liang
> Priority: Critical
> Labels: bulk-closed
>
> Now that we have pushed partition management of all tables to the catalog, one issue for scalable partition handling remains: handling schema updates.
> Currently, a schema update requires dropping and recreating the entire table, which does not scale well with the size of the table.
> We should support updating the schema of the table, either via ALTER TABLE, or automatically as new files with compatible schemas are appended into the table.
> cc [~rxin]
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