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Posted to issues@spark.apache.org by "Bryan Cutler (JIRA)" <ji...@apache.org> on 2017/07/11 18:42:00 UTC
[jira] [Commented] (SPARK-21375) Add date and timestamp support to
ArrowConverters for toPandas() collection
[ https://issues.apache.org/jira/browse/SPARK-21375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16082735#comment-16082735 ]
Bryan Cutler commented on SPARK-21375:
--------------------------------------
I'm working on this
> Add date and timestamp support to ArrowConverters for toPandas() collection
> ---------------------------------------------------------------------------
>
> Key: SPARK-21375
> URL: https://issues.apache.org/jira/browse/SPARK-21375
> Project: Spark
> Issue Type: Improvement
> Components: PySpark, SQL
> Affects Versions: 2.3.0
> Reporter: Bryan Cutler
>
> Date and timestamp are not yet supported in DataFrame.toPandas() using ArrowConverters. These are common types for data analysis used in both Spark and Pandas and should be supported.
> There is a discrepancy with the way that PySpark and Arrow store timestamps, without timezone specified, internally. PySpark takes a UTC timestamp that is adjusted to local time and Arrow is in UTC time. Hopefully there is a clean way to resolve this.
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