[jira] [Commented] (HBASE-11908) Region replicas should be added to the meta table at the time of table creation

["Enis Soztutar (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-11908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14124717#comment-14124717 ] 

Enis Soztutar commented on HBASE-11908:
---------------------------------------

The solution is easy enough. We can just add a server name columns for region replicas, but leave the server name as empty. This will allow the clients to know about the region replica, but the location server name will still be empty until it is assigned. Any RPC attempted for these replica locations will eventually succeed using the regular RPC retry mechanism. 

> Region replicas should be added to the meta table at the time of table creation
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-11908
>                 URL: https://issues.apache.org/jira/browse/HBASE-11908
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 2.0.0
>
>
> While testing async replication handling and failover handling for region replicas, we've found that sometimes the secondary region replicas do not open and update meta quickly enough, and hence meta would not contain any information about the region replica id. 
> If a reader caches the meta row before all region replicas are open the first time (such as the async wal replication endpoint), then it may miss the region replica and won't know about it until it refreshes it's cache again. 
> Instead, we should add entries to the meta for all of the region replicas at the time of create table (just like primary regions). 



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