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Posted to issues@carbondata.apache.org by "Yadong Qi (JIRA)" <ji...@apache.org> on 2017/03/28 02:13:41 UTC

[jira] [Assigned] (CARBONDATA-781) Some SegmentProperties objects occupy too much memory in driver

     [ https://issues.apache.org/jira/browse/CARBONDATA-781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yadong Qi reassigned CARBONDATA-781:
------------------------------------

    Assignee: Yadong Qi

> Some SegmentProperties objects occupy too much memory in driver
> ---------------------------------------------------------------
>
>                 Key: CARBONDATA-781
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-781
>             Project: CarbonData
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.1.0-incubating
>            Reporter: Yadong Qi
>            Assignee: Yadong Qi
>         Attachments: CarbonProperties.jpg
>
>          Time Spent: 3h 20m
>  Remaining Estimate: 0h
>
> When I load carbondata 1000+ times with 35 nodes, I found SegmentProperties objects occupy 2.5+G(76K * 35 * 1000) memory in driver. I don't have small files so I don't want to compact the segments. I analyzed the dump file and found the values of SegmentProperties are the same, so I think we can reuse the SegmentProperties object if possible.



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