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https://issues.apache.org/jira/browse/HBASE-20637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Duo Zhang updated HBASE-20637:
------------------------------
    Component/s: Replication

> Polish the WAL switching when transiting from A to S
> ----------------------------------------------------
>
>                 Key: HBASE-20637
>                 URL: https://issues.apache.org/jira/browse/HBASE-20637
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Replication
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Major
>             Fix For: HBASE-19064
>
>         Attachments: HBASE-20637-HBASE-19064-v1.patch, 
> HBASE-20637-HBASE-19064-v2.patch, HBASE-20637-HBASE-19064-v3.patch, 
> HBASE-20637-HBASE-19064.patch
>
>
> The design in HBASE-20424 implies that, when transiting from A to S, the RS 
> will abort and the WAL file will be split.
> But in fact, there could be races that make a RS still alive after the 
> transiting which causes data inconsistency. And also, a full cluster restart 
> is expensive, we need to find a more smooth way.



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