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		<title>DataStax Support Forums &#187; Tag: Error - Recent Posts</title>
		<link>http://www.datastax.com/support-forums/tags/error</link>
		<description>Software, Support, and Training for Apache Cassandra</description>
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		<pubDate>Wed, 22 May 2013 15:57:08 +0000</pubDate>
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		<item>
			<title>joaquin on "Error in the file: cassandra.yaml"</title>
			<link>http://www.datastax.com/support-forums/topic/error-in-the-file-cassandrayaml#post-1732</link>
			<pubDate>Fri, 20 Apr 2012 18:07:26 +0000</pubDate>
			<dc:creator>joaquin</dc:creator>
			<guid isPermaLink="false">1732@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;Hello,&#60;/p&#62;
&#60;p&#62;It seems that there is a cassandra.yaml mismatch. Could you perhaps follow the methodology of the docs where you extract a new version of DSE side by side with the old version? That way you can ensure configurations are in two different directories?&#60;/p&#62;
&#60;p&#62;At that point, please follow this set of documentations:&#60;br /&#62;
&#60;a href=&#34;http://www.datastax.com/docs/datastax_enterprise2.0/upgrading_dse&#34; rel=&#34;nofollow&#34;&#62;http://www.datastax.com/docs/datastax_enterprise2.0/upgrading_dse&#60;/a&#62;&#60;/p&#62;
&#60;p&#62;Do make note of the Best Practices section and the section that talks about diff'ing configuration files.&#60;/p&#62;
&#60;p&#62;Thanks,&#60;br /&#62;
Joaquin
&#60;/p&#62;</description>
		</item>
		<item>
			<title>Anonymous on "Error in the file: cassandra.yaml"</title>
			<link>http://www.datastax.com/support-forums/topic/error-in-the-file-cassandrayaml#post-1656</link>
			<pubDate>Tue, 17 Apr 2012 17:23:43 +0000</pubDate>
			<dc:creator>Anonymous</dc:creator>
			<guid isPermaLink="false">1656@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;Hello, yesterday update my version cassandra enterprise 1 to version enterprise cassandra 2. But running this command: dse cassandra -t, show the following error&#60;/p&#62;
&#60;p&#62;INFO [main] 2012-04-17 12:12:02,065 AbstractCassandraDaemon.java (line 105) Logging initialized&#60;br /&#62;
 INFO [main] 2012-04-17 12:12:02,123 DatabaseDescriptor.java (line 116) Loading settings from file:/home/vensocia/datastax/resources/cassandra/conf/cassandra.yaml&#60;br /&#62;
ERROR [main] 2012-04-17 12:12:02,216 DatabaseDescriptor.java (line 448) Fatal configuration error error&#60;br /&#62;
while parsing a block mapping&#60;br /&#62;
 in &#34;&#38;lt;reader&#38;gt;&#34;, line 10, column 1:&#60;br /&#62;
    cluster_name: 'Test Cluster'&#60;br /&#62;
    ^&#60;br /&#62;
expected &#38;lt;block end&#38;gt;, but found BlockMappingStart&#60;br /&#62;
 in &#34;&#38;lt;reader&#38;gt;&#34;, line 72, column 4:&#60;br /&#62;
       saved_caches_directory: /home/ve ...&#60;br /&#62;
       ^&#60;/p&#62;
&#60;p&#62;	at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:575)&#60;br /&#62;
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:162)&#60;br /&#62;
	at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:147)&#60;br /&#62;
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:227)&#60;br /&#62;
	at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:159)&#60;br /&#62;
	at org.yaml.snakeyaml.composer.Composer.composeDocument(Composer.java:121)&#60;br /&#62;
	at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:104)&#60;br /&#62;
	at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:117)&#60;br /&#62;
	at org.yaml.snakeyaml.Loader.load(Loader.java:52)&#60;br /&#62;
	at org.yaml.snakeyaml.Yaml.load(Yaml.java:166)&#60;br /&#62;
	at org.apache.cassandra.config.DatabaseDescriptor.&#38;lt;clinit&#38;gt;(DatabaseDescriptor.java:133)&#60;br /&#62;
	at org.apache.cassandra.thrift.CassandraServer.&#38;lt;init&#38;gt;(CassandraServer.java:88)&#60;br /&#62;
	at com.datastax.bdp.server.DseServer.&#38;lt;init&#38;gt;(DseServer.java:110)&#60;br /&#62;
	at com.datastax.bdp.util.CassandraInternalClient.&#38;lt;init&#38;gt;(CassandraInternalClient.java:19)&#60;br /&#62;
	at com.datastax.bdp.hadoop.mapred.SchemaTool.init(SchemaTool.java:408)&#60;br /&#62;
	at com.datastax.bdp.server.DseDaemon.setup(DseDaemon.java:97)&#60;br /&#62;
	at org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:356)&#60;br /&#62;
	at com.datastax.bdp.server.DseDaemon.main(DseDaemon.java:325)&#60;/p&#62;
&#60;p&#62;Guide me using this tutorial: &#60;a href=&#34;http://www.datastax.com/docs/datastax_enterprise2.0/dse_quickstart#quick-install-nosudo&#34; rel=&#34;nofollow&#34;&#62;http://www.datastax.com/docs/datastax_enterprise2.0/dse_quickstart#quick-install-nosudo&#60;/a&#62;
&#60;/p&#62;</description>
		</item>
		<item>
			<title>tjake on "Lucene/Mahout Error: class  overrides final method tokenStream."</title>
			<link>http://www.datastax.com/support-forums/topic/lucenemahout-error-class-overrides-final-method-tokenstream#post-1561</link>
			<pubDate>Tue, 10 Apr 2012 14:06:09 +0000</pubDate>
			<dc:creator>tjake</dc:creator>
			<guid isPermaLink="false">1561@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;This looks to be happening because DSE comes with Lucene/Solr 4.0&#60;/p&#62;
&#60;p&#62;We can fix this in the next point release so the Solr jars aren't in the classpath when you run hadoop.  In the meantime you can move those jars out of the way $DSE_HOME/resources/solr/lib&#60;/p&#62;
&#60;p&#62;-Jake
&#60;/p&#62;</description>
		</item>
		<item>
			<title>Anonymous on "Lucene/Mahout Error: class  overrides final method tokenStream."</title>
			<link>http://www.datastax.com/support-forums/topic/lucenemahout-error-class-overrides-final-method-tokenstream#post-1544</link>
			<pubDate>Fri, 06 Apr 2012 15:33:24 +0000</pubDate>
			<dc:creator>Anonymous</dc:creator>
			<guid isPermaLink="false">1544@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;Hey, I've been working on getting Mahout to run on top of DataStax Enterprise, but I'm running into issues with Lucene incompatibility.&#60;/p&#62;
&#60;p&#62;For example, using the Mahout wikipedia bayes example (&#60;a href=&#34;https://cwiki.apache.org/MAHOUT/wikipedia-bayes-example.html)&#34; rel=&#34;nofollow&#34;&#62;https://cwiki.apache.org/MAHOUT/wikipedia-bayes-example.html)&#60;/a&#62;, when I execute the following command (step #6 from the example), I end up with errors as shown. (the below command has some *magic* in it, as mahout will assume that a &#60;code&#62;hadoop&#60;/code&#62; executable will exist, so I created a &#60;code&#62;hadoop&#60;/code&#62; shell script serving as an alias that basically does &#60;code&#62;dse hadoop $@&#60;/code&#62;; that's what &#60;code&#62;HADOOP_HOME&#60;/code&#62; is pointing to&#60;/p&#62;
&#60;p&#62;&#60;code&#62;&#60;br /&#62;
sudo env JAVA_HOME=$JAVA_HOME HADOOP_HOME=/home/ubuntu/hadoop HADOOP_CONF_DIR=/etc/dse/hadoop ./mahout wikipediaDataSetCreator -i wikipedia/chunks -o wikipediainput -c /home/ubuntu/mahout/examples/src/test/resources/country.txt&#60;br /&#62;
&#60;/code&#62;&#60;/p&#62;
&#60;p&#62;&#60;code&#62;&#60;br /&#62;
    MAHOUT-JOB: /home/ubuntu/mahout/examples/target/mahout-examples-0.7-SNAPSHOT-job.jar&#60;br /&#62;
    12/04/06 14:38:03 WARN driver.MahoutDriver: No wikipediaDataSetCreator.props found on classpath, will use command-line arguments only&#60;br /&#62;
    12/04/06 14:38:04 INFO bayes.WikipediaDatasetCreatorDriver: Input: wikipedia/chunks Out: wikipediainput Categories: /home/ubuntu/mahout/examples/src/test/resources/country.txt&#60;br /&#62;
    12/04/06 14:38:04 INFO common.HadoopUtil: Deleting wikipediainput&#60;br /&#62;
    12/04/06 14:38:05 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.&#60;br /&#62;
    12/04/06 14:38:06 INFO input.FileInputFormat: Total input paths to process : 555&#60;br /&#62;
    12/04/06 14:38:07 INFO mapred.JobClient: Running job: job_201204051216_0017&#60;br /&#62;
    12/04/06 14:38:08 INFO mapred.JobClient:  map 0% reduce 0%&#60;br /&#62;
    12/04/06 14:38:26 INFO mapred.JobClient: Task Id : attempt_201204051216_0017_m_000005_0, Status : FAILED&#60;br /&#62;
    Error: class org.apache.lucene.analysis.ReusableAnalyzerBase overrides final method tokenStream.(Ljava/lang/String;Ljava/io/Reader;)Lorg/apache/lucene/analysis/TokenStream;&#60;br /&#62;
    12/04/06 14:38:28 INFO mapred.JobClient: Task Id : attempt_201204051216_0017_m_000002_0, Status : FAILED&#60;br /&#62;
    Error: class org.apache.lucene.analysis.ReusableAnalyzerBase overrides final method tokenStream.(Ljava/lang/String;Ljava/io/Reader;)Lorg/apache/lucene/analysis/TokenStream;&#60;br /&#62;
&#60;/code&#62;&#60;/p&#62;
&#60;p&#62;From reading about this error, it appears that Lucene has been patched to make TokenStream final, resulting in the above issues. Mahout itself has an implementation of lucene jars that do not have this problem. I am assuming that the solution lies in getting the dse hadoop to use mahout lucene instead of the lucene it has. Any guidance on that?&#60;/p&#62;
&#60;p&#62;Cheers,&#60;/p&#62;
&#60;p&#62;Tristan
&#60;/p&#62;</description>
		</item>
		<item>
			<title>thobbs on "&#34;Rebalance Failed: Cassandra&#34; error when trying to rebalance cluster using opscenter"</title>
			<link>http://www.datastax.com/support-forums/topic/rebalance-failed-cassandra-error-when-trying-to-rebalance-cluster-using-opscenter#post-1236</link>
			<pubDate>Fri, 24 Feb 2012 20:29:53 +0000</pubDate>
			<dc:creator>thobbs</dc:creator>
			<guid isPermaLink="false">1236@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;Can you change the logging level to DEBUG in opscenterd.conf, restart opscenterd, try to rebalance again, and post your logs here?
&#60;/p&#62;</description>
		</item>
		<item>
			<title>Anonymous on "&#34;Rebalance Failed: Cassandra&#34; error when trying to rebalance cluster using opscenter"</title>
			<link>http://www.datastax.com/support-forums/topic/rebalance-failed-cassandra-error-when-trying-to-rebalance-cluster-using-opscenter#post-1232</link>
			<pubDate>Fri, 24 Feb 2012 18:52:30 +0000</pubDate>
			<dc:creator>Anonymous</dc:creator>
			<guid isPermaLink="false">1232@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;I was trying to rebalance a cluster using opscenter enterprise and received an error box saying &#34;Rebalance Failed: Cassandra&#34;.  Tried looking throughout the logs but can't see any obvious errors.  I even went back to review the documentation.  Where should I look?  Is this likely a configuration issue?   This is a test cluster so I can always wipe it out and start from scratch but I'd like to understand what's going on.
&#60;/p&#62;</description>
		</item>
		<item>
			<title>TheSaint on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-181</link>
			<pubDate>Thu, 16 Jun 2011 23:33:57 +0000</pubDate>
			<dc:creator>TheSaint</dc:creator>
			<guid isPermaLink="false">181@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;You are the man. Thx! It's a browser issue. Grabbed the latest FireFox and all is finally well :)
&#60;/p&#62;</description>
		</item>
		<item>
			<title>mbulman on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-180</link>
			<pubDate>Thu, 16 Jun 2011 23:25:58 +0000</pubDate>
			<dc:creator>mbulman</dc:creator>
			<guid isPermaLink="false">180@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;From what I can tell, that shouldn't be caused by any sort of opscenterd or configuration issue.  What OS and browser (with version) are you using to load opscenter?
&#60;/p&#62;</description>
		</item>
		<item>
			<title>TheSaint on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-178</link>
			<pubDate>Thu, 16 Jun 2011 23:00:49 +0000</pubDate>
			<dc:creator>TheSaint</dc:creator>
			<guid isPermaLink="false">178@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;[root@islapadua opscenter]# yum list installed &#124; grep opsc&#60;br /&#62;
opscenter-free.noarch                    1.1.2-1                installed
&#60;/p&#62;</description>
		</item>
		<item>
			<title>mbulman on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-177</link>
			<pubDate>Thu, 16 Jun 2011 22:55:22 +0000</pubDate>
			<dc:creator>mbulman</dc:creator>
			<guid isPermaLink="false">177@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;&#60;code&#62;yum list installed &#124; grep opsc&#60;/code&#62;
&#60;/p&#62;</description>
		</item>
		<item>
			<title>TheSaint on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-176</link>
			<pubDate>Thu, 16 Jun 2011 22:49:39 +0000</pubDate>
			<dc:creator>TheSaint</dc:creator>
			<guid isPermaLink="false">176@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;opscenter-free-1.1.2-1.noarch.rpm	2011-Jun-15 16:13:21	40.4M	application/x-redhat-package-manager&#60;/p&#62;
&#60;p&#62;However, I'm sure I installed it before the date showing when I looked a minute ago.
&#60;/p&#62;</description>
		</item>
		<item>
			<title>mbulman on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-174</link>
			<pubDate>Thu, 16 Jun 2011 22:36:06 +0000</pubDate>
			<dc:creator>mbulman</dc:creator>
			<guid isPermaLink="false">174@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;What version of opscenter are you running?
&#60;/p&#62;</description>
		</item>
		<item>
			<title>TheSaint on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-173</link>
			<pubDate>Thu, 16 Jun 2011 22:29:29 +0000</pubDate>
			<dc:creator>TheSaint</dc:creator>
			<guid isPermaLink="false">173@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;Thanks Nick! The JMX port was wrong. However, still getting the following error in the browser. Any ideas?&#60;/p&#62;
&#60;p&#62;&#34;Error loading cluster: _f8 has no properties&#34;&#60;/p&#62;
&#60;p&#62;OpsCenter Log looks clean:&#60;/p&#62;
&#60;p&#62;2011-06-16 15:21:48-0700 [-] Log opened.&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] twistd 10.2.0 (/usr/bin/python2.6 2.6.5) starting up.&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] reactor class: twisted.internet.selectreactor.SelectReactor.&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] opscenterd.WebServer.OpsCenterdWebServer starting on 8888&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Starting factory &#38;lt;opscenterd.WebServer.OpsCenterdWebServer instance at 0xb758670c&#38;gt;&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] morbid.morbid.StompFactory starting on 61619&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Starting factory &#38;lt;morbid.morbid.StompFactory instance at 0xb75982ac&#38;gt;&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] morbid.morbid.StompFactory starting on 61620&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] set uid/gid 101/102&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] OpsCenterdService startService&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] JmxJythonService started. State is now &#34;startup&#34;.&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Starting CassandraCluster service&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Waiting for metric storage to start...&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Adding connection to &#38;lt;CassandraNode 127.0.0.1:9160 @0xb7598e0c&#38;gt;&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Adding connection to &#38;lt;CassandraNode 127.0.0.1:9160 @0xb7598e0c&#38;gt;&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Adding connection to &#38;lt;CassandraNode 127.0.0.1:9160 @0xb7598e0c&#38;gt;&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Adding connection to &#38;lt;CassandraNode 127.0.0.1:9160 @0xb7598e0c&#38;gt;&#60;br /&#62;
2011-06-16 15:21:48-0700 [-] Adding connection to &#38;lt;CassandraNode 127.0.0.1:9160 @0xb7598e0c&#38;gt;&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode 127.0.&#60;br /&#62;
0.1:9160 @0xb7598e0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode 127.0.&#60;br /&#62;
0.1:9160 @0xb7598e0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode 127.0.&#60;br /&#62;
0.1:9160 @0xb7598e0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode 127.0.&#60;br /&#62;
0.1:9160 @0xb7598e0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode 127.0.&#60;br /&#62;
0.1:9160 @0xb7598e0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] acquired initial keyspace list: [CassandraKeyspace(key&#60;br /&#62;
space=system, column_families=['NodeIdInfo', 'IndexInfo', 'Schema', 'Migrations', 'LocationInfo', 'HintsColumnFamily'],&#60;br /&#62;
 attributes={'strategy_options': {'replication_factor': '1'}, 'replica_placement_strategy': 'org.apache.cassandra.locat&#60;br /&#62;
or.LocalStrategy', 'replication_factor': '1'}), CassandraKeyspace(keyspace=OpsCenter, column_families=['metrics', 'even&#60;br /&#62;
ts', 'events_timeline'], attributes={'strategy_options': {'replication_factor': '1'}, 'replica_placement_strategy': 'or&#60;br /&#62;
g.apache.cassandra.locator.SimpleStrategy', 'replication_factor': '1'})]&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] acquired cluster name: My Test Cluster&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] acquired snitch: org.apache.cassandra.locator.SimpleSn&#60;br /&#62;
itch&#60;br /&#62;
2011-06-16 15:21:48-0700 [CassandraPoolParticipantClient,client] acquired partitioner: org.apache.cassandra.dht.RandomP&#60;br /&#62;
artitioner&#60;br /&#62;
2011-06-16 15:21:53-0700 [-] JmxJythonService got jmxjython startup message. State is now &#34;normal&#34;.&#60;br /&#62;
2011-06-16 15:21:54-0700 [-] Recognizing new node '140606861003303120699789276524092207721' (127.0.0.1)&#60;br /&#62;
2011-06-16 15:24:28-0700 [HTTPChannel,0,10.196.129.64] 10.196.129.64 - - [16/Jun/2011:22:24:27 +0000] &#34;GET /opscenter/i&#60;br /&#62;
ndex.html HTTP/1.1&#34; 200 2535 &#34;-&#34; &#34;Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.9) Gecko/20070118 Red Hat/1.5.0.9-10&#60;br /&#62;
.el5 Firefox/1.5.0.9 pango-text&#34;&#60;br /&#62;
2011-06-16 15:24:28-0700 [HTTPChannel,1,10.196.129.64] 10.196.129.64 - - [16/Jun/2011:22:24:27 +0000] &#34;GET /opscenter/j&#60;br /&#62;
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&#60;/p&#62;</description>
		</item>
		<item>
			<title>nickmbailey on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-171</link>
			<pubDate>Thu, 16 Jun 2011 21:15:35 +0000</pubDate>
			<dc:creator>nickmbailey</dc:creator>
			<guid isPermaLink="false">171@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;You are getting connection refused errors when trying to connect to jmx. Things to check:&#60;/p&#62;
&#60;p&#62;* Port configured in /etc/opscenter/opscenterd.conf is the correct jmx port&#60;br /&#62;
* Firewall is opened for that port and all ports &#38;gt; 1024.&#60;br /&#62;
* You may need to configure the jmx hostname property in cassandra-env.sh if the hostname 'islapadua' isn't reachable from the opscenter machine.
&#60;/p&#62;</description>
		</item>
		<item>
			<title>TheSaint on "Error loading cluster: _f8 has no properties / Failed to call getNodeList for node"</title>
			<link>http://www.datastax.com/support-forums/topic/error-loading-cluster-_f8-has-no-properties-failed-to-call-getnodelist-for-node#post-170</link>
			<pubDate>Thu, 16 Jun 2011 21:09:58 +0000</pubDate>
			<dc:creator>TheSaint</dc:creator>
			<guid isPermaLink="false">170@http://www.datastax.com/support-forums/</guid>
			<description>&#60;p&#62;Can someone point me in the right direction regarding this error, from OpsCenter in the browser. Also the following error appears in the Log &#34;Failed to call getNodeList for node ...&#34;&#60;/p&#62;
&#60;p&#62;Any help appreciated.&#60;/p&#62;
&#60;p&#62;Here's OpsCenter Log:&#60;/p&#62;
&#60;p&#62;2011-06-16 14:03:45-0700 [-] Log opened.&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] twistd 10.2.0 (/usr/bin/python2.6 2.6.5) starting up.&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] reactor class: twisted.internet.selectreactor.SelectReactor.&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] opscenterd.WebServer.OpsCenterdWebServer starting on 8888&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Starting factory &#38;lt;opscenterd.WebServer.OpsCenterdWebServer instance at 0xb762970c&#38;gt;&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] morbid.morbid.StompFactory starting on 61619&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Starting factory &#38;lt;morbid.morbid.StompFactory instance at 0xb763b2ac&#38;gt;&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] morbid.morbid.StompFactory starting on 61620&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] set uid/gid 101/102&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] OpsCenterdService startService&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] JmxJythonService started. State is now &#34;startup&#34;.&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Starting CassandraCluster service&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Waiting for metric storage to start...&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Adding connection to &#38;lt;CassandraNode islapadua:9160 @0xb763be0c&#38;gt;&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Adding connection to &#38;lt;CassandraNode islapadua:9160 @0xb763be0c&#38;gt;&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Adding connection to &#38;lt;CassandraNode islapadua:9160 @0xb763be0c&#38;gt;&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Adding connection to &#38;lt;CassandraNode islapadua:9160 @0xb763be0c&#38;gt;&#60;br /&#62;
2011-06-16 14:03:45-0700 [-] Adding connection to &#38;lt;CassandraNode islapadua:9160 @0xb763be0c&#38;gt;&#60;br /&#62;
2011-06-16 14:03:45-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode islapa&#60;br /&#62;
dua:9160 @0xb763be0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 14:03:45-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode islapa&#60;br /&#62;
dua:9160 @0xb763be0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 14:03:45-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode islapa&#60;br /&#62;
dua:9160 @0xb763be0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 14:03:45-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode islapa&#60;br /&#62;
dua:9160 @0xb763be0c&#38;gt; to the pool&#60;br /&#62;
2011-06-16 14:03:45-0700 [CassandraPoolParticipantClient,client] Successfully added connection to &#38;lt;CassandraNode islapa&#60;br /&#62;
dua:9160 @0xb763be0c&#38;gt; to the pool&#60;/p&#62;
&#60;p&#62;space=system, column_families=['NodeIdInfo', 'IndexInfo', 'Schema', 'Migrations', 'LocationInfo', 'HintsColumnFamily'],&#60;br /&#62;
 attributes={'strategy_options': {'replication_factor': '1'}, 'replica_placement_strategy': 'org.apache.cassandra.locat&#60;br /&#62;
or.LocalStrategy', 'replication_factor': '1'}), CassandraKeyspace(keyspace=OpsCenter, column_families=['metrics', 'even&#60;br /&#62;
ts', 'events_timeline'], attributes={'strategy_options': {'replication_factor': '1'}, 'replica_placement_strategy': 'or&#60;br /&#62;
g.apache.cassandra.locator.SimpleStrategy', 'replication_factor': '1'})]&#60;br /&#62;
2011-06-16 14:03:45-0700 [CassandraPoolParticipantClient,client] acquired cluster name: My Test Cluster&#60;br /&#62;
2011-06-16 14:03:45-0700 [CassandraPoolParticipantClient,client] acquired snitch: org.apache.cassandra.locator.SimpleSn&#60;br /&#62;
itch&#60;br /&#62;
2011-06-16 14:03:45-0700 [CassandraPoolParticipantClient,client] acquired partitioner: org.apache.cassandra.dht.RandomP&#60;br /&#62;
artitioner&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] JmxJythonService got jmxjython startup message. State is now &#34;normal&#34;.&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] 'Failed to call getNodeList for node islapadua (will try with next conn)'&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] 'Failed to call getNodeList for node islapadua (will try with next conn)'&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] 'Failed to call getNodeList for node islapadua (will try with next conn)'&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] 'Failed to call getNodeList for node islapadua (will try with next conn)'&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] Couldn't refresh node list&#60;br /&#62;
        Traceback (most recent call last):&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/internet/defer.py&#34;, line 542, in _runCallbacks&#60;br /&#62;
            current.result = callback(current.result, *args, **kw)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/internet/defer.py&#34;, line 1076, in gotResult&#60;br /&#62;
            _inlineCallbacks(r, g, deferred)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/internet/defer.py&#34;, line 1018, in _inlineCallbacks&#60;br /&#62;
            result = result.throwExceptionIntoGenerator(g)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/python/failure.py&#34;, line 349, in throwExceptionIntoGenerator&#60;br /&#62;
            return g.throw(self.type, self.value, self.tb)&#60;br /&#62;
        --- &#38;lt;exception caught here&#38;gt; ---&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/opscenterd/Cluster.py&#34;, line 562, in collectNodeList&#60;/p&#62;
&#60;p&#62;          File &#34;/usr/lib/python2.6/site-packages/twisted/internet/defer.py&#34;, line 1018, in _inlineCallbacks&#60;br /&#62;
            result = result.throwExceptionIntoGenerator(g)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/python/failure.py&#34;, line 349, in throwExceptionIntoGenerator&#60;br /&#62;
            return g.throw(self.type, self.value, self.tb)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/opscenterd/Cluster.py&#34;, line 533, in call_with_any_jmxconn&#60;/p&#62;
&#60;p&#62;        opscenterd.jmxadapt.JmxJythonService.GenericJavaError:  Failed to retrieve RMIServer stub: javax.naming.Service&#60;/p&#62;
&#60;p&#62;        opscenterd.jmxadapt.JmxJythonService.GenericJavaError:  Failed to retrieve RMIServer stub: javax.naming.Service&#60;br /&#62;
UnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: islapadua; nested except&#60;br /&#62;
ion is:&#60;br /&#62;
                java.net.ConnectException: Connection refused]&#60;br /&#62;
        Request was: ('query', 'org.apache.cassandra.db:type=StorageService', 'TokenToEndpointMap', None)&#60;/p&#62;
&#60;p&#62;2011-06-16 14:03:50-0700 [-] 'Failed to call getNodeList for node islapadua (will try with next conn)'&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] 'Failed to call getNodeList for node islapadua (will try with next conn)'&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] 'Failed to call getNodeList for node islapadua (will try with next conn)'&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] 'Failed to call getNodeList for node islapadua (will try with next conn)'&#60;br /&#62;
2011-06-16 14:03:50-0700 [-] Couldn't refresh node list&#60;br /&#62;
        Traceback (most recent call last):&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/internet/defer.py&#34;, line 542, in _runCallbacks&#60;br /&#62;
            current.result = callback(current.result, *args, **kw)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/internet/defer.py&#34;, line 1076, in gotResult&#60;br /&#62;
            _inlineCallbacks(r, g, deferred)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/internet/defer.py&#34;, line 1018, in _inlineCallbacks&#60;br /&#62;
            result = result.throwExceptionIntoGenerator(g)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/python/failure.py&#34;, line 349, in throwExceptionIntoGenerator&#60;br /&#62;
            return g.throw(self.type, self.value, self.tb)&#60;br /&#62;
        --- &#38;lt;exception caught here&#38;gt; ---&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/opscenterd/Cluster.py&#34;, line 562, in collectNodeList&#60;/p&#62;
&#60;p&#62;          File &#34;/usr/lib/python2.6/site-packages/twisted/internet/defer.py&#34;, line 1018, in _inlineCallbacks&#60;br /&#62;
            result = result.throwExceptionIntoGenerator(g)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/twisted/python/failure.py&#34;, line 349, in throwExceptionIntoGenerator&#60;br /&#62;
            return g.throw(self.type, self.value, self.tb)&#60;br /&#62;
          File &#34;/usr/lib/python2.6/site-packages/opscenterd/Cluster.py&#34;, line 533, in call_with_any_jmxconn&#60;/p&#62;
&#60;p&#62;        opscenterd.jmxadapt.JmxJythonService.GenericJavaError:  Failed to retrieve RMIServer stub: javax.naming.Service&#60;br /&#62;
UnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: islapadua; nested except&#60;br /&#62;
ion is:&#60;br /&#62;
                java.net.ConnectException: Connection refused]&#60;br /&#62;
        Request was: ('query', 'org.apache.cassandra.db:type=StorageService', 'TokenToEndpointMap', None)
&#60;/p&#62;</description>
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