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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/05/17 08:23:00 UTC
[jira] [Assigned] (SPARK-35421) Remove redundant ProjectExec from
streaming queries with V2Relation
[ https://issues.apache.org/jira/browse/SPARK-35421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-35421:
------------------------------------
Assignee: Apache Spark (was: Kousuke Saruta)
> Remove redundant ProjectExec from streaming queries with V2Relation
> -------------------------------------------------------------------
>
> Key: SPARK-35421
> URL: https://issues.apache.org/jira/browse/SPARK-35421
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 3.2.0
> Reporter: Kousuke Saruta
> Assignee: Apache Spark
> Priority: Major
>
> Streaming queries with V2Relation can have redundant ProjectExec in it's physical plan.
> You can easily reproduce with the following code.
> {code}
> import org.apache.spark.sql.streaming.Trigger
> val query = spark.
> readStream.
> format("rate").
> option("rowsPerSecond", 1000).
> option("rampUpTime", "10s").
> load().
> selectExpr("timestamp", "100", "value").
> writeStream.
> format("console").
> trigger(Trigger.ProcessingTime("5 seconds")).
> // trigger(Trigger.Continuous("5 seconds")). // You can reproduce with continuous processing too.
> outputMode("append").
> start()
> {code}
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