[jira] [Commented] (SPARK-24545) Function hour not working as expected for hour 2 in PySpark

["Eric Blanco (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-24545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16510999#comment-16510999 ] 

Eric Blanco commented on SPARK-24545:
-------------------------------------

Ok apparenlty this is due to a change of hour that was that day form 2 AM to 3 AM in Europe :)

> Function hour not working as expected for hour 2 in PySpark
> -----------------------------------------------------------
>
>                 Key: SPARK-24545
>                 URL: https://issues.apache.org/jira/browse/SPARK-24545
>             Project: Spark
>          Issue Type: Bug
>          Components: Java API
>    Affects Versions: 2.2.1
>            Reporter: Eric Blanco
>            Priority: Minor
>
> Hello,
> I tried to get the hour out of a date and it works except if the hour is 2. It works well in Scala but in PySpark it shows hour 3 instead of hour 2.
> Example:
> {code:java}
> from pyspark.sql.functions import *
>  columns = ["id","date"]
>  vals = [(4,"2016-03-27 02:00:00")]
>  df = sqlContext.createDataFrame(vals, columns)
>  df.withColumn("hours", hour(col("date"))).show(){code}
> |id|date|hours|
> |4|2016-03-27 2:00:00|3|
> It works as expected for other hours.
> Also, if you change the year or month apparently it works well. 



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