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https://issues.apache.org/jira/browse/HBASE-19969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16393887#comment-16393887
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Vladimir Rodionov commented on HBASE-19969:
-------------------------------------------

{quote}
As I said previously, if the delete() call fails, the rename() would fail as 
well.
I think IOE can be thrown for both failures.
{quote}
Done.

{quote}
getBackupTmpDirForBackupId is no longer in the patch. Can you describe related 
changes ?
{quote}
It is now getBackupTmpDirPathForBackupId

> Improve FT in merge operation
> -----------------------------
>
>                 Key: HBASE-19969
>                 URL: https://issues.apache.org/jira/browse/HBASE-19969
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>            Priority: Major
>         Attachments: HBASE-19969-v1.patch, HBASE-19969-v2.patch, 
> HBASE-19969-v3.patch
>
>
> Some file system operations are not fault tolerant during merge. We delete 
> backup data in a backup file system, then copy new data over to backup 
> destination. Deletes can be partial, copy can fail as well



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