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https://issues.apache.org/jira/browse/HBASE-19999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16392333#comment-16392333
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Guanghao Zhang commented on HBASE-19999:
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Revisit the related changes about sync replication.
For standby cluster:
1. Need create a new remoteWALs directory.
2. Master need a new SyncReplicationWALManager (not a thread).
3. RS need threads to run ReplaySyncReplicationWALProcedure.
For active cluster:
1. Need a SyncReplicationWALProvider.
So rename this config to hbase.sync.replication.wal.provider.enabled to only
used for WAL construction. Will unload a patch later.
> Remove the SYNC_REPLICATION_ENABLED flag
> ----------------------------------------
>
> Key: HBASE-19999
> URL: https://issues.apache.org/jira/browse/HBASE-19999
> Project: HBase
> Issue Type: Sub-task
> Reporter: Duo Zhang
> Priority: Major
>
> It is a bit strange since we can not guard all the sync replication related
> code with it. We'd better change its name and only use it within the WAL
> construction.
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