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https://issues.apache.org/jira/browse/SPARK-22125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16180256#comment-16180256
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Apache Spark commented on SPARK-22125:
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User 'ueshin' has created a pull request for this issue:
https://github.com/apache/spark/pull/19349
> Enable Arrow Stream format for vectorized UDF.
> ----------------------------------------------
>
> Key: SPARK-22125
> URL: https://issues.apache.org/jira/browse/SPARK-22125
> Project: Spark
> Issue Type: Improvement
> Components: PySpark, SQL
> Affects Versions: 2.3.0
> Reporter: Takuya Ueshin
>
> Currently we use Arrow File format to communicate with Python worker when
> invoking vectorized UDF but we can use Arrow Stream format.
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