Siddharth Teotia created ARROW-1946:
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             Summary: Add APIs to decimal vector for writing big endian data
                 Key: ARROW-1946
                 URL: https://issues.apache.org/jira/browse/ARROW-1946
             Project: Apache Arrow
          Issue Type: Bug
            Reporter: Siddharth Teotia
            Assignee: Siddharth Teotia


We recently moved Dremio to LE Decimal format (similar to Arrow). As part of 
that we introduces some APIs in decimal vector which take a big endian data and 
swap the bytes while writing into the ArrowBuf of decimal vector.

The advantage of these APIs is that caller would not have to allocate an 
additional memory and write( and read) source big endian twice for swapping 
into new memory and using that to write into the vector.

We can directly swap bytes while writing into the vector -- just read once and 
swap while writing.



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