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https://issues.apache.org/jira/browse/HBASE-18547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16126637#comment-16126637
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Ted Yu commented on HBASE-18547:
--------------------------------
One potential solution is for cleaner chore to notify BackupLogCleaner which
files have been successfully deleted.
BackupLogCleaner can respond and clean up related entries in backup table.
> Provide better cleanup of WAL related entries in backup table
> -------------------------------------------------------------
>
> Key: HBASE-18547
> URL: https://issues.apache.org/jira/browse/HBASE-18547
> Project: HBase
> Issue Type: Bug
> Reporter: Ted Yu
>
> I was discussing the design around incremental backup with Vladimir.
> Currently if WAL file is recorded in backup table, BackupLogCleaner would
> signal that the file can be cleaned up.
> However, cleaner chore doesn't notify BackupLogCleaner whether the file is
> actually deleted.
> This means that potentially large number of WAL file entries would stay in
> backup table.
> This issue is to investigate better cleanup strategy for the WAL entries.
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