spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vladimir Smelov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-22182) Incorrect Date and Timestamp conversion beyon before 1000 year
Date Mon, 02 Oct 2017 09:52:00 GMT
Vladimir Smelov created SPARK-22182:
---------------------------------------

             Summary: Incorrect Date and Timestamp conversion beyon before 1000 year
                 Key: SPARK-22182
                 URL: https://issues.apache.org/jira/browse/SPARK-22182
             Project: Spark
          Issue Type: Bug
          Components: PySpark
    Affects Versions: 2.2.0
            Reporter: Vladimir Smelov


I create DF with None values in each odd row

```
    from pyspark.sql.functions import lit
    from datetime import datetime
    from pprint import pprint

    df = spark.range(0, 10).withColumnRenamed('id', 'field_int')
    d = datetime.now().date()
    dt = datetime.now()
    df = df.withColumn('field_date', lit(d))
    df = df.withColumn('field_datetime', lit(dt))

    def foo(part_idx, it):
        for it_idx, row in enumerate(it):
            real_idx = part_idx + it_idx
            if real_idx % 2:
                yield None, None, None
            else:
                yield row

    df = df.rdd.mapPartitionsWithIndex(foo).toDF()
    print('df:')
    pprint(df.collect())
```

after that I want to fill None to default values, where default Date is 0001-01-01 and default
Timestamp is 0001-01-01 00:00:00

```
from pyspark.sql.types import (
    StringType, BinaryType, BooleanType, DateType,
    TimestampType, DecimalType, DoubleType, FloatType, ByteType, IntegerType,
    LongType, ShortType)

SparkType2Default = {
    StringType: '',
    BinaryType: '',
    BooleanType: 0,
    DateType: '0001-01-01',
    TimestampType: '0001-01-01 00:00:00',
    DoubleType: 0.0,
    FloatType: 0.0,
    ByteType: 0,
    IntegerType: 0,
    LongType: 0,
    ShortType: 0,
}


def smart_fillna(df):
    mapping = {}
    for field in df.schema.fields:
        name = field.name
        spark_type = type(field.dataType)
        default_value = SparkType2Default[spark_type]
        mapping[name] = default_value
    df = df.fillna(mapping)
    return df

    df = smart_fillna(df)
    print('df:')
    pprint(df.collect())
```

Then I got an error:
```
Traceback (most recent call last):
  File "/home/vsmelov/PycharmProjects/etl/spark_test/import.py", line 220, in <module>
    write_test()
  File "/home/vsmelov/PycharmProjects/etl/spark_test/import.py", line 203, in write_test
    pprint(df.collect())
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/sql/dataframe.py",
line 439, in collect
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/serializers.py",
line 144, in load_stream
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/serializers.py",
line 169, in _read_with_length
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/serializers.py",
line 451, in loads
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/sql/types.py",
line 1371, in <lambda>
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/sql/types.py",
line 602, in fromInternal
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/sql/types.py",
line 602, in <listcomp>
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/sql/types.py",
line 439, in fromInternal
  File "/var/bigdata/spark-2.2.0-bin-hadoop2.7/python/lib/pyspark.zip/pyspark/sql/types.py",
line 176, in fromInternal
    def send(self, val):
ValueError: ordinal must be >= 1
```

So after some experiments, I realized that there is error in conversion of string value to
Date and Timestamp and I have to replace default values with
```

SparkType2Default = {
    StringType: '',
    BinaryType: '',
    BooleanType: 0,
    DateType: '0001-01-03',
    TimestampType: '0001-01-03 00:29:43',
    DateType: '0001-01-01',
    TimestampType: '0001-01-01 00:00:00',
    DoubleType: 0.0,
    FloatType: 0.0,
    ByteType: 0,
    IntegerType: 0,
    LongType: 0,
    ShortType: 0,
}
```
DateType: *'0001-01-03'*,
TimestampType: *'0001-01-03 00:29:43'*,
Then it works correct.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org


Mime
View raw message