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https://issues.apache.org/jira/browse/SPARK-16423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15366756#comment-15366756
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Xiao Li commented on SPARK-16423:
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Sure, let me find a right person for this. Thanks!
> Inconsistent settings on the first day of a week
> ------------------------------------------------
>
> Key: SPARK-16423
> URL: https://issues.apache.org/jira/browse/SPARK-16423
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Yin Huai
>
> For the function {{WeekOfYear}}, we explicitly set the first day of the week
> to {{Calendar.MONDAY}}. However, {{FromUnixTime}} does not explicitly set it.
> So, we are using the default first day of the week based on the locale
> setting (see
> https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html#setFirstDayOfWeek-int-).
>
> Let's do a survey on what other databases do and make the setting consistent.
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