Francis Liu reassigned HBASE-20724:

    Assignee: Francis Liu

> Sometimes some compacted storefiles are still opened after region failover
> --------------------------------------------------------------------------
>                 Key: HBASE-20724
>                 URL: https://issues.apache.org/jira/browse/HBASE-20724
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 3.0.0, 1.3.0, 1.4.0, 1.5.0, 2.0.0
>            Reporter: Francis Liu
>            Assignee: Francis Liu
>            Priority: Critical
> It is important that compacted storefiles of a given compaction execution are 
> wholly opened or archived to insure data consistency. ie a storefile 
> containing delete tombstones can be archived while older storefiles 
> containing cells that were supposed to be deleted are left unarchived thereby 
> undeleting those cells.
> When a server fails compaction markers (in the wal edit) are used to 
> determine which storefiles are compacted and should be excluded during region 
> open (during failover). But the WALs containing compaction markers can be 
> prematurely archived even though there are still compacted storefiles for 
> that particular compaction event that hasn't been archived yet. Thus losing 
> compaction information that needs to be replayed. This is because hlog 
> archiving logic only keeps track of flushed storefiles and not archived ones.
> https://issues.apache.org/jira/browse/HBASE-20704?focusedCommentId=16507680&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16507680

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