arrow-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Wes McKinney (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ARROW-462) [C++] Implement in-memory conversions between non-nested primitive types and DictionaryArray equivalent
Date Fri, 06 Jan 2017 16:20:58 GMT
Wes McKinney created ARROW-462:
----------------------------------

             Summary: [C++] Implement in-memory conversions between non-nested primitive types
and DictionaryArray equivalent
                 Key: ARROW-462
                 URL: https://issues.apache.org/jira/browse/ARROW-462
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
            Reporter: Wes McKinney


We use a hash table to extract unique values and dictionary indices. There may be an opportunity
to consolidate common code from the dictionary encoding implementation implemented in parquet-cpp
(but the dictionary indices will not be run-length encoded in Arrow):

https://github.com/apache/parquet-cpp/blob/master/src/parquet/encodings/dictionary-encoding.h



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message