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https://issues.apache.org/jira/browse/HBASE-28456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18011895#comment-18011895
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Vinayak Hegde commented on HBASE-28456:
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[~bbeaudreault] thanks for fixing the issue.
As part of https://issues.apache.org/jira/browse/HBASE-29484, we're updating
the backup and restore documentation to reflect the latest changes.
Since this Jira also touches the backup and restore components, could you
please review the changes and check if any updates to the documentation are
needed? If so, kindly create a sub-task under
https://issues.apache.org/jira/browse/HBASE-29484 detailing the required
documentation updates. You’re welcome to assign it to yourself and work on it,
or we’d be happy to take it up as well.
Thanks!
> HBase Restore restores old data if data for the same timestamp is in
> different hfiles
> -------------------------------------------------------------------------------------
>
> Key: HBASE-28456
> URL: https://issues.apache.org/jira/browse/HBASE-28456
> Project: HBase
> Issue Type: Bug
> Components: backup&restore
> Reporter: Ruben Van Wanzeele
> Assignee: Bryan Beaudreault
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 2.6.0, 3.0.0-beta-2
>
> Attachments:
> Add_incremental_test_for_HBASE-28456_Fix_HBASE-28412_for_incremental_test.patch,
> ChangesOnHFilesOnSameTimestampAreNotCorrectlyRestored.java
>
>
> The restore brings back 'old' data when executing restore.
> It feels like the hfile sequence id is not respected during the restore.
> See testing code attached. The workaround solution is to trigger major
> compaction before doing the backup (not really feasible for daily backups)
> We didn't investigate this yet, but this might also impact the merge of
> multiple incremental backups (since that follows a similar code path merging
> hfiles).
> This currently blocks our support for HBase backup and restore.
> Willing to participate in a solution if necessary.
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