Josh Elser commented on HBASE-14135:

+1 once we get a proper QA back.

bq. What is a blocker is moving backup out of hbase-server module, HBASE-17614

[~vrodionov], can you find the cycles to also take on this work in the 
near-term, please?

> HBase Backup/Restore Phase 3: Merge backup images
> -------------------------------------------------
>                 Key: HBASE-14135
>                 URL: https://issues.apache.org/jira/browse/HBASE-14135
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>            Priority: Critical
>              Labels: backup
>             Fix For: 2.0.0
>         Attachments: HBASE-14135-v10.patch, HBASE-14135-v3.patch, 
> HBASE-14135-v5.patch, HBASE-14135-v6.patch, HBASE-14135-v7.patch, 
> HBASE-14135-v8.patch, HBASE-14135-v9.patch
> User can merge incremental backup images into single incremental backup image.
> # Merge supports only incremental images
> # Merge supports only images for the same backup destinations
> Command:
> {code}
> hbase backup merge image1,image2,..imageK
> {code}
> Example:
> {code}
> hbase backup merge backup_143126764557,backup_143126764456 
> {code}
> When operation is complete, only the most recent backup image will be kept 
> (in above example -  backup_143126764557) as a merged backup image, all other 
> images will be deleted from both: file system and backup system tables, 
> corresponding backup manifest for the merged backup image will be updated to 
> remove dependencies from deleted images. Merged backup image will contains 
> all the data from original image and from deleted images.

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