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Posted to dev@carbondata.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/07/19 12:07:20 UTC
[jira] [Commented] (CARBONDATA-80) Dictionary values should be
equally distributed in buckets while loading in memory
[ https://issues.apache.org/jira/browse/CARBONDATA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15384023#comment-15384023 ]
ASF GitHub Bot commented on CARBONDATA-80:
------------------------------------------
GitHub user manishgupta88 opened a pull request:
https://github.com/apache/incubator-carbondata/pull/44
CARBONDATA-80 Dictionary values should be equally distributed in buckets while loading in memory
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/manishgupta88/incubator-carbondata equal_dict_distribution
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-carbondata/pull/44.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #44
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commit 83f190330e73962b38faa7ccba04edf1f181191d
Author: manishgupt88 <to...@gmail.com>
Date: 2016-07-19T09:25:52Z
Perform equal distribution of dictionary values among the sublists of a list whenever a dictionary file is loaded into memory
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> Dictionary values should be equally distributed in buckets while loading in memory
> ----------------------------------------------------------------------------------
>
> Key: CARBONDATA-80
> URL: https://issues.apache.org/jira/browse/CARBONDATA-80
> Project: CarbonData
> Issue Type: Improvement
> Reporter: Manish Gupta
> Assignee: Manish Gupta
> Priority: Minor
>
> Whenever a query is executed, dictionary for columns queried is loaded in memory. For incremental loads dictionary values are loaded incrementally and thus one list contains several sub lists with dictionary values.
> The dictionary values on incremental load may not be equally distributed in the sub buckets and this might increase the search time of a value if there are too many incremental loads.
> Therefore the dictionary values should be divided equally in the sub buckets.
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