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https://issues.apache.org/jira/browse/HBASE-11339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14119894#comment-14119894
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Andrew Purtell commented on HBASE-11339:
----------------------------------------

bq. As Jon said, we'll revamp the mob compaction and get rid of the MR 
dependency.

Please. I don't think we should ever ship a release with a dependency on MR for 
core function. Committing this to trunk in stages could be ok, as long as we do 
not attempt a release including the feature before MOB compaction is handled 
natively. 

> 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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