[jira] [Resolved] (HBASE-8357) current region server failover mechanism for replication can lead to stale region server whose left hlogs can't be replicated by other region server

["Lars Hofhansl (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-8357?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl resolved HBASE-8357.
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    Resolution: Duplicate

Duplicate of HBASE-2611. Thanks Feng for looking, it's always helpful to have more eyes look at the code.
                
> current region server failover mechanism for replication can lead to stale region server whose left hlogs can't be replicated by other region server
> ----------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-8357
>                 URL: https://issues.apache.org/jira/browse/HBASE-8357
>             Project: HBase
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 0.94.3
>            Reporter: Feng Honghua
>
> consider this scenario: rs A/B/C, A dies, B and C race to lock A to help replicate A's left unreplicated hlogs, B wins and successfully creates lock under A's znode, but before B copies A's hlog queues to its own znode, B also dies, and C successfully creates lock under B's znode and helps replicate B's own left hlogs. But A's left hlogs can't be replicated by any other rs since B left back a lock under A's znode and B didn't transfer A's hlog queues to its own znode before B dies.

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