Ivan Gagarkin created IGNITE-20225:
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Summary: ignite-spark-ext: 'select weekofyear' returns incorrect
week number based on local rules
Key: IGNITE-20225
URL: https://issues.apache.org/jira/browse/IGNITE-20225
Project: Ignite
Issue Type: Bug
Components: spark
Reporter: Ivan Gagarkin
According to the Spark documentation, the function
[weekofyear|https://spark.apache.org/docs/latest/api/sql/#weekofyear] should
return a number based on ISO rules:
{quote}A week is considered to start on a Monday and week 1 is the first week
with >3 days.
{quote}
The current implementation of the spark-extension uses
[WEEK|http://www.h2database.com/html/functions.html#week[],|http://www.h2database.com/html/grammar.html#week_year_field],]
which returns the week-based year (locale-specific) from a date/time value.
The extensions should use
[ISO_WEEK|http://www.h2database.com/html/functions.html#iso_week]
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