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Posted to dev@hive.apache.org by "Matt McCline (JIRA)" <ji...@apache.org> on 2016/12/01 23:34:58 UTC

[jira] [Created] (HIVE-15335) Fast Decimal

Matt McCline created HIVE-15335:
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             Summary: Fast Decimal
                 Key: HIVE-15335
                 URL: https://issues.apache.org/jira/browse/HIVE-15335
             Project: Hive
          Issue Type: Bug
          Components: Hive
            Reporter: Matt McCline
            Assignee: Matt McCline
            Priority: Critical


Replace HiveDecimal implementation that currently represents the decimal internally as a BigDecimal with a faster version that does not allocate extra objects

Replace HiveDecimalWritable implementation with a faster version that has new mutable* calls (e.g. mutableAdd, mutableEnforcePrecisionScale, etc) and stores the result as a fast decimal instead of a slow byte array containing a serialized BigInteger.

Provide faster ways to serialize/deserialize decimals.



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