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https://issues.apache.org/jira/browse/SPARK-20600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15997217#comment-15997217
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Shixiong Zhu commented on SPARK-20600:
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Could you submit a PR to fix its "toString" method?
> KafkaRelation should be pretty printed in web UI (Details for Query)
> --------------------------------------------------------------------
>
> Key: SPARK-20600
> URL: https://issues.apache.org/jira/browse/SPARK-20600
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 2.2.0
> Reporter: Jacek Laskowski
> Priority: Trivial
> Attachments: kafka-source-scan-webui.png
>
>
> Executing the following batch query gives the default stringified/internal
> name of {{KafkaRelation}} in web UI (under Details for Query), i.e.
> http://localhost:4040/SQL/execution/?id=3 (<-- change the {{id}}). See the
> attachment.
> {code}
> spark.
> read.
> format("kafka").
> option("subscribe", "topic1").
> option("kafka.bootstrap.servers", "localhost:9092").
> load.
> select('value cast "string").
> write.
> csv("fromkafka.csv")
> {code}
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