Duo Zhang resolved HBASE-19843.
    Resolution: Duplicate

> Allow temporarily skipping the creation of remote writer for 
> SynchronousReplicationWALProvider
> ----------------------------------------------------------------------------------------------
>                 Key: HBASE-19843
>                 URL: https://issues.apache.org/jira/browse/HBASE-19843
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Duo Zhang
>            Priority: Major
> If the remote cluster is broken and we want to downgrade the local cluster to 
> not write WAL to remote cluster, we need to reopen the region to switch back 
> to use the normal WAL.
> But we need to flush before reopening a region, and the flush need to write a 
> flush marker to WAL. Since the WAL has already been broken, this can not be 
> done...

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