[spark] branch master updated (d5f5720 -> 3493162)

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    from d5f5720  [SPARK-31070][SQL] make skew join split skewed partitions more evenly
     add 3493162  [SPARK-31030][SQL] Backward Compatibility for Parsing and formatting Datetime

No new revisions were added by this update.

Summary of changes:
 R/pkg/R/functions.R                                |   4 +-
 docs/_data/menu-sql.yaml                           |   2 +
 docs/sql-ref-datetime-pattern.md                   | 220 +++++++++++++++++++++
 python/pyspark/sql/functions.py                    |   6 +-
 python/pyspark/sql/readwriter.py                   |  16 +-
 python/pyspark/sql/streaming.py                    |   8 +-
 .../spark/sql/catalyst/catalog/interface.scala     |   2 +-
 .../catalyst/expressions/datetimeExpressions.scala |   6 +-
 .../spark/sql/catalyst/util/DateFormatter.scala    |   4 +-
 .../catalyst/util/DateTimeFormatterHelper.scala    |   5 +-
 .../spark/sql/catalyst/util/DateTimeUtils.scala    |  62 ++++--
 .../sql/catalyst/util/TimestampFormatter.scala     |   4 +-
 .../sql/catalyst/util/DateTimeUtilsSuite.scala     |  18 +-
 .../org/apache/spark/sql/DataFrameReader.scala     |   8 +-
 .../org/apache/spark/sql/DataFrameWriter.scala     |   8 +-
 .../execution/datasources/PartitioningUtils.scala  |   2 +-
 .../scala/org/apache/spark/sql/functions.scala     |  18 +-
 .../spark/sql/streaming/DataStreamReader.scala     |   8 +-
 .../native/stringCastAndExpressions.sql.out        |   6 +-
 19 files changed, 341 insertions(+), 66 deletions(-)
 create mode 100644 docs/sql-ref-datetime-pattern.md


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