You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@hive.apache.org by "Prasanth Jayachandran (JIRA)" <ji...@apache.org> on 2015/02/24 00:05:11 UTC

[jira] [Created] (HIVE-9757) LLAP: Reuse string dictionaries per column per stripe when processing row groups

Prasanth Jayachandran created HIVE-9757:
-------------------------------------------

             Summary: LLAP: Reuse string dictionaries per column per stripe when processing row groups
                 Key: HIVE-9757
                 URL: https://issues.apache.org/jira/browse/HIVE-9757
             Project: Hive
          Issue Type: Sub-task
    Affects Versions: llap
            Reporter: Prasanth Jayachandran
            Assignee: Prasanth Jayachandran
             Fix For: llap


Dictionary streams are cached by low level cache. When creating column vectors from streams we create dictionary for every row group that we process. We should add per query cache to cache the deserialized representation of dictionary per stripe per column. 



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