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Posted to issues@spark.apache.org by "Cheng Lian (JIRA)" <ji...@apache.org> on 2015/03/18 09:39:38 UTC
[jira] [Updated] (SPARK-6195) Specialized in-memory column type for
fixed-precision decimal
[ https://issues.apache.org/jira/browse/SPARK-6195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cheng Lian updated SPARK-6195:
------------------------------
Summary: Specialized in-memory column type for fixed-precision decimal (was: Specialized in-memory column type for decimal)
> Specialized in-memory column type for fixed-precision decimal
> -------------------------------------------------------------
>
> Key: SPARK-6195
> URL: https://issues.apache.org/jira/browse/SPARK-6195
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.1.1, 1.3.0, 1.2.1
> Reporter: Cheng Lian
> Assignee: Cheng Lian
> Fix For: 1.4.0
>
>
> When building in-memory columnar representation, decimal values are currently serialized via a generic serializer, which is unnecessarily slow. Since some decimals (precision < 19) can be represented as annotated long values, we should add a specialized fixed-precision decimal column type to speed up in-memory decimal serialization.
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