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From "Vladimir Rodionov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15094) Selection of WAL files eligible for incremental backup is broken
Date Wed, 13 Jan 2016 17:08:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15096559#comment-15096559
] 

Vladimir Rodionov commented on HBASE-15094:
-------------------------------------------

[~jinghe]

This is new code and logic behind BackupLogCleaner implementation.

> Selection of WAL files eligible for incremental backup is broken
> ----------------------------------------------------------------
>
>                 Key: HBASE-15094
>                 URL: https://issues.apache.org/jira/browse/HBASE-15094
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>             Fix For: 2.0.0
>
>
> We should add to a selection WAL files which have been copied over by different backup
sessions and which are newer than the most recent files processed for a given table. Currently,
we look for WAL files only in a files system (WALs and OldWALs directories)
> Scenario
> Full Backup T1
> Full Backup T2
>  Created WAL1
> Incremental Backup T1 (WAL1 becomes eligible for deletion)
> some time later
> Incremental Backup T2 (WAL1 can be deleted by this time and won't get it into WAL file
list for T2)



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