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https://issues.apache.org/jira/browse/SPARK-3833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Wood updated SPARK-3833:
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Summary: Allow Spark SQL SchemaRDDs to be merged (was: Allow Spark SQL
SchemaRDDs to me berged)
> Allow Spark SQL SchemaRDDs to be merged
> ---------------------------------------
>
> Key: SPARK-3833
> URL: https://issues.apache.org/jira/browse/SPARK-3833
> Project: Spark
> Issue Type: Wish
> Components: SQL
> Reporter: Chris Wood
>
> We have JSON flowing into Spark SQL.
> I can successfully store them as parquet and read them with
> sqlContext.jsonRDD, but the inferred schemas cannot be merged into a single
> table to do queries.
> I'd like a way to allow for parquet file schemas to be merged, whether they
> match or not, since we know the schema should be a union of the schemas from
> the files.
> This will allow us to have the data define the schema and new columns will
> just appear.
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