hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8760) possible loss of data in snapshot taken after region split
Date Wed, 10 Jul 2013 11:23:49 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matteo Bertozzi updated HBASE-8760:
-----------------------------------

    Attachment: HBASE-8760-thz-v0.patch

attached a thz-v0 patch, that adds a check if the referred file exists in the snapshot. This
means that the snapshot will fail if the parent region is missing.
                
> possible loss of data in snapshot taken after region split
> ----------------------------------------------------------
>
>                 Key: HBASE-8760
>                 URL: https://issues.apache.org/jira/browse/HBASE-8760
>             Project: HBase
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 0.94.8
>            Reporter: Jerry He
>            Assignee: Jerry He
>             Fix For: 0.94.10
>
>         Attachments: HBase-8760-0.94.8.patch, HBase-8760-0.94.8-v1.patch, HBASE-8760-thz-v0.patch
>
>
> Right after a region split but before the daughter regions are compacted, we have two
daughter regions containing Reference files to the parent hfiles.
> If we take snapshot right at the moment, the snapshot will succeed, but it will only
contain the daughter Reference files. Since there is no hold on the parent hfiles, they will
be deleted by the HFile Cleaner after they are no longer needed by the daughter regions soon
after.
> A minimum we need to do is the keep these parent hfiles from being deleted. 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message