Apache9 commented on a change in pull request #1206: HBASE-23890 Update the
rsgroup section in our ref guide
URL: https://github.com/apache/hbase/pull/1206#discussion_r384428798
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File path: src/main/asciidoc/_chapters/ops_mgt.adoc
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@@ -3479,6 +3478,27 @@ To enable ACL, add the following to your hbase-site.xml
and restart your Master:
<property>
----
+=== Migrating From Old Implementation
+The coprocessor `org.apache.hadoop.hbase.rsgroup.RSGroupAdminEndpoint` is
+deprected, but for compatible, if you want the pre 3.0.0 hbase client/shell
+to communicate with the new hbase cluster, you still need to add this
+coprocessor to master. And if this coprocessor is specified, the
+`hbase.balancer.rsgroup.enabled` flag will be set to true automatically to
Review comment:
OK, we have this in RSGroupBasedLoadBalancer.initialize
```
// Create the balancer
Class<? extends LoadBalancer> balancerClass;
String balancerClassName = config.get(HBASE_RSGROUP_LOADBALANCER_CLASS);
if (balancerClassName == null) {
balancerClass =
config.getClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS,
LoadBalancerFactory.getDefaultLoadBalancerClass(),
LoadBalancer.class);
} else {
try {
balancerClass =
Class.forName(balancerClassName).asSubclass(LoadBalancer.class);
} catch (ClassNotFoundException e) {
throw new IOException(e);
}
}
// avoid infinite nesting
if (getClass().isAssignableFrom(balancerClass)) {
balancerClass = LoadBalancerFactory.getDefaultLoadBalancerClass();
}
internalBalancer = ReflectionUtils.newInstance(balancerClass);
```
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