[ 
https://issues.apache.org/jira/browse/HBASE-22976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Michael Stack resolved HBASE-22976.
-----------------------------------
    Hadoop Flags: Reviewed
      Resolution: Fixed

Merged to master and backported to branch-2/branch-2.3. Thanks for review 
[~wchevreuil]

> [HBCK2] Add RecoveredEditsPlayer
> --------------------------------
>
>                 Key: HBASE-22976
>                 URL: https://issues.apache.org/jira/browse/HBASE-22976
>             Project: HBase
>          Issue Type: Sub-task
>          Components: hbck2, walplayer
>            Reporter: Michael Stack
>            Assignee: Michael Stack
>            Priority: Major
>             Fix For: 3.0.0-alpha-1, 2.3.3, 2.4.0
>
>         Attachments: 22976.txt
>
>
> We need a recovered edits player. Messing w/ the 'adoption service' -- 
> tooling to adopt orphan regions and hfiles -- I've been manufacturing damaged 
> clusters by moving stuff around under the running cluster. No reason to think 
> that an hbase couldn't lose accounting of a whole region if a cataclysm. If 
> so, region will have stuff like the '.regioninfo', dirs per column family w/ 
> store files but it could too have a 'recovered_edits' directory with content 
> in it. We have a WALPlayer for errant WALs. We have the FSHLog tool which can 
> read recovered_edits content for debugging data loss. Missing is a 
> RecoveredEditsPlayer.
> I took a look at extending the WALPlayer since it has a bunch of nice options 
> and it can run at bulk. Ideally, it would just digest recovered edits content 
> if passed an option or recovered edits directories. On first glance, it 
> didn't seem like an easy integration.... Would be worth taking a look again. 
> Would be good if we could avoid making a new, distinct tool, just for 
> Recovered Edits.
> The bulkload tool expects hfiles in column family directories. Recovered 
> edits files are not hfiles and the files are x-columnfamily so this is not 
> the way to go though a bulkload-like tool that moved the recovered edits 
> files under the appropriate region dir and asked the region reopen would be a 
> possibility (Would need the bulk load complete trick of splitting input if 
> the region boundaries in the live cluster do not align w/ those of the errant 
> recovered edits files).



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

Reply via email to