[HBASE-16868] Add a replicate_all flag to avoid misuse the namespaces and table-cfs config of replication peer

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha-1, 2.0.0
• Fix Version/s: 2.0.0-beta-1, 2.0.0
• Component/s: Replication

Release Note

Add a replicate_all flag to replication peer config. The default value is true, which means all user tables (REPLICATION_SCOPE != 0 ) will be replicated to peer cluster.

How to config a peer from replicate all to only replicate special namespace/tablecfs?
Step1. Add a new peer with no namespace/tablecfs config, the replicate_all flag will be true automatically.
Step2. User want only replicate some namespaces or tables, so set replicate_all flag to false first.
Step3. Add special namespaces or table-cfs config to the replication peer.

How to config a peer from replicate special namespace/tablecfs to replicate all?
Step1. Add a new peer with special namespace/tablecfs config, the replicate_all flag will be false automatically.
Step2. User want replicate all user tables, so remove the special namespace/tablecfs config first.
Step3. Set replicate_all flag to true.

How to config replicate nothing?
Set replicate_all flag to false and no namespace/tablecfs config, then all tables cannot be replicated to peer cluster.

• Assignee: Guanghao Zhang
• Reporter: Guanghao Zhang
• Created: 18/Oct/16 04:00
• Updated: 21/Mar/18 22:20
• Resolved: 23/Nov/17 07:18

Description

First add a new peer by shell cmd.

add_peer '1', CLUSTER_KEY => "server1.cie.com:2181:/hbase".

If we don't set namespaces and table cfs in peer config. It means replicate all tables to the peer cluster.

Then append a table to the peer config.

append_peer_tableCFs '1', {"table1" => []}

Then this peer will only replicate table1 to the peer cluster. It changes to replicate only one table from replicate all tables in the cluster. It is very easy to misuse in production cluster. So we should avoid appending table to a peer which replicates all table.

Issue Links

• links to: Review Board (master)