simbadzina commented on code in PR #5860:
URL: https://github.com/apache/hadoop/pull/5860#discussion_r1270894010
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hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterClientProtocol.java:
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@@ -194,6 +202,18 @@ public class RouterClientProtocol implements
ClientProtocol {
this.routerCacheAdmin = new RouterCacheAdmin(rpcServer);
this.securityManager = rpcServer.getRouterSecurityManager();
this.rbfRename = new RouterFederationRename(rpcServer, conf);
+
+ this.crsNameservicesCache = CacheBuilder.newBuilder()
Review Comment:
The set off all active nameservices changes as well. For example all the
namenodes in ns0 can be decommissioned while the routers are still up.
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