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From "Jingcheng Du (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-11643) Read and write MOB in HBase
Date Tue, 12 Aug 2014 03:47:12 GMT

     [ https://issues.apache.org/jira/browse/HBASE-11643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jingcheng Du updated HBASE-11643:
---------------------------------

    Attachment: HBASE-11643-V6.diff

Update the mob directory. In order to serve the snapshot better, the mob directory is changed
to {hbaseRootDir}/mobdir/data/{namesapce}/{tableName}/{dummyMobRegionEncodedName}/{familyName}.
In the dummy mob region, the start key is .mob, the regionid is 0.

> Read and write MOB in HBase
> ---------------------------
>
>                 Key: HBASE-11643
>                 URL: https://issues.apache.org/jira/browse/HBASE-11643
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>            Reporter: Jingcheng Du
>            Assignee: Jingcheng Du
>         Attachments: HBASE-11643-V2.diff, HBASE-11643-V3.diff, HBASE-11643-V4.diff, HBASE-11643-V5.diff,
HBASE-11643-V6.diff, HBase-11643.diff
>
>
> The read/write MOB in HBase are implemented in this JIRA. Normally, the Cells are saved
in the MemStore, and flushed to the HFiles when necessary. For MOB, the Cells are saved in
the MemStore as well, but they're flushed to elsewhere out of HBase in the format of HFiles.



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