DataStax Support Forums » Topic: No jobtracker found

DataStax Support Forums » Topic: No jobtracker found http://www.datastax.com/support-forums/topic/no-jobtracker-found Software, Support, and Training for Apache Cassandra en-US Tue, 21 May 2013 12:25:30 +0000 http://bbpress.org/?v=1.0.3 <![CDATA[Search]]> q http://www.datastax.com/support-forums/search.php joaquin on "No jobtracker found" http://www.datastax.com/support-forums/topic/no-jobtracker-found#post-57 Tue, 17 May 2011 15:40:44 +0000 joaquin 57@http://www.datastax.com/support-forums/ I just wanted to check in an confirm that it now works for you? joaquin on "No jobtracker found" http://www.datastax.com/support-forums/topic/no-jobtracker-found#post-41 Fri, 13 May 2011 18:23:40 +0000 joaquin 41@http://www.datastax.com/support-forums/ Yes, -v 3 means that the first 3 nodes are Vanilla Cassandra nodes. This means that the first tracker node is that with AMI Index = 3 (since it starts at 0). Login to the third machine and you should be able to run the command. vwonthecup on "No jobtracker found" http://www.datastax.com/support-forums/topic/no-jobtracker-found#post-38 Fri, 13 May 2011 02:19:05 +0000 vwonthecup 38@http://www.datastax.com/support-forums/ Dear Joaquin, Thanks a million for explaining this in detail and un_clouding my understanding. Alright I started the cluster using the same options in the howto file, (see i changed nothing) Cluster started with these options: -s 6 -v 3 -c 2 -o james:bond Let me know if I made a mistake somewhere. Harsh joaquin on "No jobtracker found" http://www.datastax.com/support-forums/topic/no-jobtracker-found#post-37 Thu, 12 May 2011 21:32:33 +0000 joaquin 37@http://www.datastax.com/support-forums/ Oh and for further clarification on point 2: We choose one by sorting because we eliminate any single point of failure for the jobtracker. All Hadoop-enabled nodes have to fail before we lose the jobtracker. joaquin on "No jobtracker found" http://www.datastax.com/support-forums/topic/no-jobtracker-found#post-36 Thu, 12 May 2011 21:30:13 +0000 joaquin 36@http://www.datastax.com/support-forums/ Hello, So far everything seems alright. 1. Your nodetool shows 6 nodes, but not all 6 nodes have to be seeds. Seeds just help with the coordination of tasks within Cassandra, primarily for the nodes to latch onto each other at boot, but after that, the cluster as a whole survives. So there is no real concept of Master/Slave nodes, nor to all seeds have to take such a high role. So this is fine. The primary thing is that all 6 nodes are now Up and running. 2. The mapred-site.xml setting was a nice addition by Jake. Brisk does not need this tracker to be set, and actually doesn't listen to it at all since Brisk chooses the IP address with the lowest sorted value in the Brisk DataCenter to be the job tracker. mapred-site.xml is provided so that non-Brisk commands can be sent over to this cluster. When that happens, what is returned is ${brisk.job.tracker} which translates back as the jobtracker that we were talking of. 3. The SLF4J errors are harmless and cosmetic. We tried to get them off before release, but ended up sticking with them until we filter out the combination of jars between all three programs (cassandra, hadoop, and hive). My best guess is that you're not running a Hadoop enabled node. What are your parameter's that you sent in? They are viewable at the top of your bootscreen. Thanks, Joaquin vwonthecup on "No jobtracker found" http://www.datastax.com/support-forums/topic/no-jobtracker-found#post-35 Thu, 12 May 2011 20:27:20 +0000 vwonthecup 35@http://www.datastax.com/support-forums/ Hi, I have been wanting to try out the hive, hadoop, and cassandra combination for a long time and nothing comes closer to it than brisk. So for the record I have initiated a demo cluster on aws using the brisk ami's and have followed the tutorial (<a href="http://www.datastax.com/docs/0.8/brisk/install_brisk_ami" rel="nofollow">http://www.datastax.com/docs/0.8/brisk/install_brisk_ami</a>) very closely (including launching 6 instances). However, things havent gone to plan. my nodetool dump: Address Status State Load Owns Token 141784319550391026443072753096570088105 10.170.175.47 Up Normal 11.13 KB 16.67% 0 10.171.53.68 Up Normal 8.92 KB 16.67% 28356863910078205288614550619314017621 10.170.227.11 Up Normal 8.92 KB 16.67% 56713727820156410577229101238628035242 10.171.51.195 Up Normal 8.92 KB 16.67% 85070591730234615865843651857942052863 10.171.38.197 Up Normal 8.92 KB 16.67% 113427455640312821154458202477256070484 10.170.123.20 Up Normal 8.92 KB 16.67% 141784319550391026443072753096570088105 cassandra.yaml: - seeds: "10.170.175.47,10.171.51.195" #note it only shows two IP's whereas there are 6 showing in the nodetool dump mapred-site.xml: <value>${brisk.job.tracker}</value> # note there is not fixed IP in here, I have tried replacing this with the line below but yet no result <value>10.170.175.47</value> finally $ brisk/bin/brisktool jobtracker SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/home/ubuntu/brisk/resources/cassandra/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/home/ubuntu/brisk/resources/hadoop/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See <a href="http://www.slf4j.org/codes.html#multiple_bindings" rel="nofollow">http://www.slf4j.org/codes.html#multiple_bindings</a> for an explanation. No jobtracker found I have the same error popping out when I start Hive, nothing seems to work ! Thanks, Harsh