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https://issues.apache.org/jira/browse/SPARK-26360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16720859#comment-16720859
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ASF GitHub Bot commented on SPARK-26360:
----------------------------------------

asfgit closed pull request #23309: [SPARK-26360]remove redundant validateQuery 
call
URL: https://github.com/apache/spark/pull/23309
 
 
   

This is a PR merged from a forked repository.
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diff --git 
a/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaSourceProvider.scala
 
b/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaSourceProvider.scala
index 6a0c2088ac3d1..4b8b5c0019b44 100644
--- 
a/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaSourceProvider.scala
+++ 
b/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaSourceProvider.scala
@@ -266,8 +266,6 @@ private[kafka010] class KafkaSourceProvider extends 
DataSourceRegister
     // We convert the options argument from V2 -> Java map -> scala mutable -> 
scala immutable.
     val producerParams = kafkaParamsForProducer(options.asMap.asScala.toMap)
 
-    KafkaWriter.validateQuery(schema.toAttributes, producerParams, topic)
-
     new KafkaStreamingWriteSupport(topic, producerParams, schema)
   }
 


 

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> Avoid extra validateQuery call in createStreamingWriteSupport
> -------------------------------------------------------------
>
>                 Key: SPARK-26360
>                 URL: https://issues.apache.org/jira/browse/SPARK-26360
>             Project: Spark
>          Issue Type: Improvement
>          Components: Structured Streaming
>    Affects Versions: 2.3.2, 2.4.0
>            Reporter: Wu Wenjie
>            Priority: Trivial
>             Fix For: 3.0.0
>
>
> When I'm reading structured streaming source code, I find there is a 
> redundant KafkaWriter.validateQuery() function call in 
> createStreamingWriteSupport func in class `KafkaSourceProvider`.
> {code:scala}
> // KafkaSourceProvider.scala
>   override def createStreamingWriteSupport(
>       queryId: String,
>       schema: StructType,
>       mode: OutputMode,
>       options: DataSourceOptions): StreamingWriteSupport = {
>    .....
>     // validate once here
>     KafkaWriter.validateQuery(schema.toAttributes, producerParams, topic)
>     // validate twice here
>     new KafkaStreamingWriteSupport(topic, producerParams, schema)
>   }
> // KafkaStreamingWriteSupport.scala
> class KafkaStreamingWriteSupport(
>     topic: Option[String],
>     producerParams: ju.Map[String, Object],
>     schema: StructType)
>   extends StreamingWriteSupport {
>   validateQuery(schema.toAttributes, producerParams, topic)
>   ....
> }
> {code}
>  
> I think we just need to remove one of these two.



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