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Owen O'Malley commented on HIVE-15335: -------------------------------------- * This breaks API compatibility of DecimalColumnVector, which is public API. I suspect you'll need to create a new class (mabye FastDecimalColumnVector?) * TypeDescription.createBatch will need an option about which kind of batch create. * The ORC reader and writer need to support both formats. * You'll need to port this code to the ORC project as well. > 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 > Attachments: HIVE-15335.01.patch, HIVE-15335.02.patch, > HIVE-15335.03.patch, HIVE-15335.04.patch, HIVE-15335.05.patch, > HIVE-15335.06.patch, HIVE-15335.07.patch, HIVE-15335.08.patch, > HIVE-15335.09.patch, HIVE-15335.091.patch > > > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)