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https://issues.apache.org/jira/browse/HBASE-30050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Charles Connell resolved HBASE-30050.
-------------------------------------
    Fix Version/s: 2.7.0
                   3.1.0
                   3.0.1
                   2.6.8
         Assignee: Tanya Stickles  (was: Hernan Romer)
       Resolution: Fixed

> Inefficient HFile format check in incremental backup bulkload copy 
> -------------------------------------------------------------------
>
>                 Key: HBASE-30050
>                 URL: https://issues.apache.org/jira/browse/HBASE-30050
>             Project: HBase
>          Issue Type: Bug
>          Components: backup&restore
>            Reporter: Hernan Romer
>            Assignee: Tanya Stickles
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.7.0, 3.1.0, 3.0.1, 2.6.8
>
>
> IncrementalTableBackupClient.incrementalCopyBulkloadHFiles uses 
> HFile.isHFileFormat() to filter files before copying. This method opens each 
> file and reads the trailer to verify magic bytes, which requires a remote I/O 
> round-trip per file. For backup output directories with many files, this is 
> unnecessarily slow. 



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