http://www.datastax.com/support-forums/topic/brisk-hadoop Software, Support, and Training for Apache Cassandra en-US Wed, 22 May 2013 06:59:52 +0000 http://bbpress.org/?v=1.0.3 q http://www.datastax.com/support-forums/search.php http://www.datastax.com/support-forums/topic/brisk-hadoop#post-355 Wed, 27 Jul 2011 00:21:16 +0000 chnet 355@http://www.datastax.com/support-forums/ <p>I had a three-node Brisk cluster.<br /> node 1 : 10.64.1.1<br /> node 2 : 10.64.1.2<br /> node 3 : 10.64.1.3<br /> I choose the seed node (node 2) as jobtracker.<br /> I can see the whole cluster using nodetool.</p> <p>From <a href="http://10.64.1.2:50030/jobtracker.jsp" rel="nofollow">http://10.64.1.2:50030/jobtracker.jsp</a>, I can see this three nodes.</p> <p>Today, on node 1, I used "brisktool movejt 10.64.1.1". That said, I change jobtracker to node 1. Node 1 becomes a single hadoop cluster. After I finished the mapper/reducer job on node 1 (I submitted a mapper/reduce job in Hive), I used "brisktool movejt 10.64.1.2". </p> <p>That said, I want to change back the jobtracker. However, it does not work. It does not return to three-node hadoop cluster, although it is still a three-node cassandra cluster.<br /> From <a href="http://10.64.1.2:50030/jobtracker.jsp" rel="nofollow">http://10.64.1.2:50030/jobtracker.jsp</a>, I can only see two nodes.<br /> On node 1, /var/log/cassandra/system.log shows the following errors:</p> <pre><code>INFO [TASK-TRACKER-INIT] 2011-07-26 20:19:37,000 Client.java (line 629) Retrying connect to server: 10.64.1.2:8012. Already tried 9 time(s). INFO [TASK-TRACKER-INIT] 2011-07-26 20:19:37,000 RPC.java (line 321) Server at 10.64.1.2:8012 not available yet, Zzzzz...</code></pre>