Davies Liu created SPARK-11151:
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Summary: Use Long internally for DecimalType with precision <= 18
Key: SPARK-11151
URL: https://issues.apache.org/jira/browse/SPARK-11151
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Davies Liu
It's expensive to create a Decimal object for small, we could use Long
directly, just like what we had done for Date and Timestamp.
This will involved lots of change that including:
1) inbound/outbound conversion
2) access/storage in InternalRow
3) all the expression that support DecimalType
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