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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11339) HBase MOB
Date Tue, 02 Sep 2014 20:29:22 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14118682#comment-14118682
] 

Anoop Sam John commented on HBASE-11339:
----------------------------------------

bq.HBase has never required MapReduce before and we should really think hard before introducing
such a change. Are we sure the desired objectives cannot be met with a pluggable compaction
policy?
It would be possible for a compaction on MOB files with out needing MR. Subtask HBASE-11861
aims for this.

> HBase MOB
> ---------
>
>                 Key: HBASE-11339
>                 URL: https://issues.apache.org/jira/browse/HBASE-11339
>             Project: HBase
>          Issue Type: Umbrella
>          Components: regionserver, Scanners
>            Reporter: Jingcheng Du
>            Assignee: Jingcheng Du
>         Attachments: HBase MOB Design-v2.pdf, HBase MOB Design-v3.pdf, HBase MOB Design-v4.pdf,
HBase MOB Design.pdf, MOB user guide.docx, MOB user guide_v2.docx, hbase-11339-in-dev.patch
>
>
>   It's quite useful to save the medium binary data like images, documents into Apache
HBase. Unfortunately directly saving the binary MOB(medium object) to HBase leads to a worse
performance since the frequent split and compaction.
>   In this design, the MOB data are stored in an more efficient way, which keeps a high
write/read performance and guarantees the data consistency in Apache HBase.



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