hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "chunhui shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6059) Replaying recovered edits would make deleted data exist again
Date Mon, 21 May 2012 11:45:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13280101#comment-13280101
] 

chunhui shen commented on HBASE-6059:
-------------------------------------

@ram
Yes, I have also considered that all the entries in the store file is deleted and we don't
write any new store file.
But, could we generate one empty store file with its meta data alone? Let me do a try first.
                
> Replaying recovered edits would make deleted data exist again
> -------------------------------------------------------------
>
>                 Key: HBASE-6059
>                 URL: https://issues.apache.org/jira/browse/HBASE-6059
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>         Attachments: HBASE-6059-testcase.patch, HBASE-6059.patch
>
>
> When we replay recovered edits, we used the minSeqId of Store, It may cause deleted data
appeared again.
> Let's see how it happens. Suppose the region with two families(cf1,cf2)
> 1.put one data to the region (put r1,cf1:q1,v1)
> 2.move the region from server A to server B.
> 3.delete the data put by step 1(delete r1)
> 4.flush this region.
> 5.make major compaction for this region
> 6.move the region from server B to server A.
> 7.Abort server A
> 8.After the region is online, we could get the deleted data(r1,cf1:q1,v1)
> (When we replay recovered edits, we used the minSeqId of Store, because cf2 has no store
files, so its seqId is 0, so the edit log of put data will be replayed to the region)

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message