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https://issues.apache.org/jira/browse/HBASE-16574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16245066#comment-16245066
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Vladimir Rodionov commented on HBASE-16574:
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One more note on B&R limitations (Chapter 85 from Ref Guide) 
{quote}
Chapter 85. Limitations of the Backup and Restore Utility
•Only one active backup session is supported. HBASE-16391 will introduce 
multiple-backup sessions support. 
•Both backup and restore can’t be canceled while in progress. ( HBASE-15997, 
HBASE-15998). 
•No supported for bulk-loaded data ( HBASE-14417). 
•Single backup destination only supported. HBASE-15476 will introduce multiple- 
backup destinations support. 
•There is no merge for incremental images (HBASE-14135). This can increase 
restore time. Users will need to periodically execute full backups to be able 
to restore data faster. 
•Only superuser (hbase) is allowed to perform backup/restore, which can be a 
problem for security (HBASE-14138). 
•During incremental backup ALL WAL data will be copied over to backup 
destination, including data from tables that are not being backed up. This 
functionality is a performance and security limitation. HBASE-14141 will 
introduce more granular copy WAL implementation.
{quote}

We implemented some features, so the following must be removed:
{quote}
•No supported for bulk-loaded data ( HBASE-14417). 
•There is no merge for incremental images (HBASE-14135). This can increase 
restore time. Users will need to periodically execute full backups to be able 
to restore data faster. 
•During incremental backup ALL WAL data will be copied over to backup 
destination, including data from tables that are not being backed up. This 
functionality is a performance and security limitation. HBASE-14141 will 
introduce more granular copy WAL implementation.
{quote}

> Add backup / restore feature to refguide
> ----------------------------------------
>
>                 Key: HBASE-16574
>                 URL: https://issues.apache.org/jira/browse/HBASE-16574
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Vladimir Rodionov
>              Labels: backup
>             Fix For: 2.0.0-beta-1
>
>         Attachments: B&R command-line tools and configuration (updated).pdf, 
> Backup-and-Restore-Apache_19Sep2016.pdf, HBASE-16574.001.patch, 
> HBASE-16574.002.patch, hbase_reference_guide.v1.pdf
>
>
> This issue is to add backup / restore feature description to hbase refguide.
> The description should cover:
> scenarios where backup / restore is used
> backup / restore commands and sample usage
> considerations in setup



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