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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2016/10/15 12:35:20 UTC
[jira] [Created] (SPARK-17955) Use the same read path in
DataFrameReader.jdbc and DataFrameReader.format("jdbc")
Hyukjin Kwon created SPARK-17955:
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Summary: Use the same read path in DataFrameReader.jdbc and DataFrameReader.format("jdbc")
Key: SPARK-17955
URL: https://issues.apache.org/jira/browse/SPARK-17955
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Hyukjin Kwon
Priority: Trivial
It seems APIs in {{DataFrameReader}}/{{DataFrameWriter}} share {{format("...").load()}} or {{format("...").save()}} APIs for {{json(...)}}/{{csv(...)}} and etc.
We can share this within {{DataFrameReader.jdbc(...)}} too consistently with other APIs.
{code}
- // connectionProperties should override settings in extraOptions.
- val params = extraOptions.toMap ++ connectionProperties.asScala.toMap
- val options = new JDBCOptions(url, table, params)
- val relation = JDBCRelation(parts, options)(sparkSession)
- sparkSession.baseRelationToDataFrame(relation)
+ // connectionProperties should override settings in extraOptions
+ this.extraOptions = this.extraOptions ++ (connectionProperties.asScala)
+ // explicit url and dbtable should override all
+ this.extraOptions += ("url" -> url, "dbtable" -> table)
+ format("jdbc").load()
{code}
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