hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Gali Sheffi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-19506) Support variable sized chunks from ChunkCreator
Date Tue, 06 Feb 2018 15:40:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-19506?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Gali Sheffi updated HBASE-19506:
    Attachment: HBASE-19506-V02.patch

> Support variable sized chunks from ChunkCreator
> -----------------------------------------------
>                 Key: HBASE-19506
>                 URL: https://issues.apache.org/jira/browse/HBASE-19506
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>            Priority: Major
>         Attachments: HBASE-19506-V01.patch, HBASE-19506-V02.patch
> When CellChunkMap is created it allocates a special index chunk (or chunks) where array
of cell-representations is stored. When the number of cell-representations is small, it is
preferable to allocate a chunk smaller than a default value which is 2MB.
> On the other hand, those "non-standard size" chunks can not be used in pool. On-demand
allocations in off-heap are costly. So this JIRA is about to investigate the trade of between
memory usage and the final performance. 

This message was sent by Atlassian JIRA

View raw message