Outdated "HDFS Architecture" page

2015-12-03 Thread Dmitry Simonov
s/HdfsPermissionsGuide.html 3. "Currently, automatic restart and failover of the NameNode software to another machine is not supported." - but there is High Availability feature. -- Best Regards, Dmitry Simonov

Why DFSClient in HA-cluster tries to resolve HA cluster name?

2015-03-31 Thread Dmitry Simonov
Hello! Why DFSClient in HA-cluster tries to resolve HA cluster name? I have just been investigating a problem - FileSystem.get() method sometimes takes too long time to complete, about 2-3 seconds, and found that: 1. DFSClient makes call to NameNodeProxies.createProxy() 2. createProxy() method,