Feather
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Feather is a fast on-disk format for data frames for R and Python.  For more information see https://bit.ly/2EKN4ZD


Reading Feather


Feather stores data uncompressed in column-wise order, in a dataframe that is similar to r. 



Writing Feather


Stat/Transfer converts its internal type to the following Feather types

                               


Target Type

Output Type


Byte                        

Float

Double

BYTE




Int

Long

INT32



Float

FLOAT


Double

DOUBLE


Date

DATE


Time

TIME


Date/time

TIMESTAMP


String

UTF-8 String