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Date: Fri, 10 Jul 2015 16:42:07 +0000 (UTC)
From: "Ted Yu (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12721032.1402630227000.156796.1436546527388@Atlassian.JIRA>
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Subject: [jira] [Comment Edited] (HBASE-11339) HBase MOB
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    [ https://issues.apache.org/jira/browse/HBASE-11339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14622478#comment-14622478 ] 

Ted Yu edited comment on HBASE-11339 at 7/10/15 4:41 PM:
---------------------------------------------------------

For Compactor.java :
{code}
  // TODO mob introduced the fd parameter; can we make this cleaner and easier to extend in future?
{code}

Edit: DefaultMobStoreCompactor uses fd parameter.
We can leave the API change as is.


was (Author: yuzhihong@gmail.com):
For Compactor.java :
{code}
  // TODO mob introduced the fd parameter; can we make this cleaner and easier to extend in future?
{code}
parameter fd is not used in performCompaction(). Can this parameter be omitted ?

> HBase MOB
> ---------
>
>                 Key: HBASE-11339
>                 URL: https://issues.apache.org/jira/browse/HBASE-11339
>             Project: HBase
>          Issue Type: Umbrella
>          Components: regionserver, Scanners
>    Affects Versions: 2.0.0
>            Reporter: Jingcheng Du
>            Assignee: Jingcheng Du
>             Fix For: hbase-11339
>
>         Attachments: HBase MOB Design-v2.pdf, HBase MOB Design-v3.pdf, HBase MOB Design-v4.pdf, HBase MOB Design-v5.pdf, HBase MOB Design.pdf, MOB user guide.docx, MOB user guide_v2.docx, MOB user guide_v3.docx, MOB user guide_v4.docx, MOB user guide_v5.docx, hbase-11339-150519.patch, hbase-11339-in-dev.patch, hbase-11339.150417.patch, merge-150212.patch, merge.150212b.patch, merge.150212c.patch, merge.150710.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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