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https://issues.apache.org/jira/browse/HBASE-19969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16394253#comment-16394253
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Ted Yu commented on HBASE-19969:
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Patch v4 moves the static import to the beginning of TestBackupMerge.
> Improve fault tolerance in backup 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: 19969-v4.patch, 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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