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https://issues.apache.org/jira/browse/HBASE-30050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18127027#comment-18127027
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Peter Somogyi commented on HBASE-30050:
---------------------------------------
The merged commits did not have the Jira ID in the commit message so I reverted
and reapplied with the updated commit message.
> 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: 4.0.0-alpha-1, 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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