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https://issues.apache.org/jira/browse/SPARK-31903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17127028#comment-17127028
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Apache Spark commented on SPARK-31903:
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User 'ueshin' has created a pull request for this issue:
https://github.com/apache/spark/pull/28740
> toPandas with Arrow enabled doesn't show metrics in Query UI.
> -------------------------------------------------------------
>
> Key: SPARK-31903
> URL: https://issues.apache.org/jira/browse/SPARK-31903
> Project: Spark
> Issue Type: Bug
> Components: PySpark, R
> Affects Versions: 2.4.5, 3.0.0
> Reporter: Takuya Ueshin
> Assignee: Takuya Ueshin
> Priority: Major
> Fix For: 3.0.0
>
> Attachments: Screen Shot 2020-06-03 at 4.47.07 PM.png, Screen Shot
> 2020-06-03 at 4.47.27 PM.png
>
>
> When calling {{toPandas}}, usually Query UI shows each plan node's metric and
> corresponding Stage ID and Task ID:
> {code:java}
> >>> df = spark.createDataFrame([(1, 10, 'abc'), (2, 20, 'def')], schema=['x',
> >>> 'y', 'z'])
> >>> df.toPandas()
> x y z
> 0 1 10 abc
> 1 2 20 def
> {code}
> !Screen Shot 2020-06-03 at 4.47.07 PM.png!
> but if Arrow execution is enabled, it shows only plan nodes and the duration
> is not correct:
> {code:java}
> >>> spark.conf.set('spark.sql.execution.arrow.pyspark.enabled', True)
> >>> df.toPandas()
> x y z
> 0 1 10 abc
> 1 2 20 def{code}
>
> !Screen Shot 2020-06-03 at 4.47.27 PM.png!
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