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https://issues.apache.org/jira/browse/HBASE-21073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16655483#comment-16655483
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Hadoop QA commented on HBASE-21073:
-----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m  
0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red}  0m  4s{color} 
| {color:red} HBASE-21073 does not apply to master. Rebase required? Wrong 
Branch? See https://yetus.apache.org/documentation/0.8.0/precommit-patchnames 
for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HBASE-21073 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12944564/HBASE-21073.master.010.patch
 |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14745/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> "Maintenance mode" master
> -------------------------
>
>                 Key: HBASE-21073
>                 URL: https://issues.apache.org/jira/browse/HBASE-21073
>             Project: HBase
>          Issue Type: Sub-task
>          Components: amv2, hbck2, master
>            Reporter: stack
>            Assignee: Mike Drob
>            Priority: Major
>         Attachments: HBASE-21073.master.001.patch, 
> HBASE-21073.master.002.patch, HBASE-21073.master.003.patch, 
> HBASE-21073.master.004.patch, HBASE-21073.master.005.patch, 
> HBASE-21073.master.006.patch, HBASE-21073.master.007.patch, 
> HBASE-21073.master.008.patch, HBASE-21073.master.009.patch, 
> HBASE-21073.master.010.patch
>
>
> Make it so we can bring up a Master in "maintenance mode". This is parse of 
> master wal procs but not taking on regionservers. It would be in a state 
> where "repair" Procedures could run; e.g. a Procedure that could recover meta 
> by looking for meta WALs, splitting them, dropping recovered.edits, and even 
> making it so meta is readable. See parent issue for why needed (disaster 
> recovery).



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