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From "Jingcheng Du (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-13836) Do not reset the mvcc for bulk loaded mob reference cells in reading
Date Tue, 09 Jun 2015 06:46:01 GMT

     [ https://issues.apache.org/jira/browse/HBASE-13836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jingcheng Du updated HBASE-13836:
    Attachment: HBASE-13836.diff

Upload the patch. Please take a look, thanks a lot!

> Do not reset the mvcc for bulk loaded mob reference cells in reading
> --------------------------------------------------------------------
>                 Key: HBASE-13836
>                 URL: https://issues.apache.org/jira/browse/HBASE-13836
>             Project: HBase
>          Issue Type: Sub-task
>          Components: mob
>    Affects Versions: hbase-11339
>            Reporter: Jingcheng Du
>            Assignee: Jingcheng Du
>             Fix For: hbase-11339
>         Attachments: HBASE-13836.diff
> Now in scanner, the cells mvcc of the bulk loaded files are reset by the seqId parsed
from the file name. We need to skip this if the hfiles are bulkloaded in mob compactions.
> In mob compaction, the bulk loaded ref cell might not be the latest cell among the ones
that have the same row key. In reading, the mvcc is reset by the largest one, it will cover
the real latest ref cell. We have to skip the resetting in this case.
> The solution is we add a new field to fileinfo, when this field is set as true, we skip
the resetting.

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