habeebraja Software, Support, and Training for Apache Cassandra en-US Sun, 19 May 2013 09:26:17 +0000 http://bbpress.org/?v=1.0.3 q http://www.datastax.com/support-forums/search.php http://www.datastax.com/support-forums/topic/pig-and-hive-queries-not-working-in-dse-221#post-8253 Wed, 02 Jan 2013 20:52:20 +0000 ssach03 8253@http://www.datastax.com/support-forums/ <p>Had the same issue. In my case I increased the memory and that resolved my issue. </p> http://www.datastax.com/support-forums/topic/pig-and-hive-queries-not-working-in-dse-221#post-8195 Fri, 28 Dec 2012 15:37:20 +0000 Piotr Kołaczkowski 8195@http://www.datastax.com/support-forums/ <p>Are there any errors reported in system.log? E.g about failed tasks?<br /> What is the load on the machines, when the task is "not moving further"?<br /> Especially, have you given enough memory for your reducers? Can you check with jmap that the dse daemon process has enough free heap space? </p> http://www.datastax.com/support-forums/topic/pig-and-hive-queries-not-working-in-dse-221#post-7968 Thu, 13 Dec 2012 13:25:09 +0000 habeebraja 7968@http://www.datastax.com/support-forums/ <p>Hi,</p> <p>We have 4 node cluster of DSE version 2.2.1. The nodes descriptions below,</p> <p>1 - Cassandra<br /> 1 - Cassandra Seed<br /> 1 - Analytics Seed<br /> 1 - Analytics</p> <p>We ran a pig script in analytics seed node. We could monitor the MapReduce job through browser(&lt;public_ip&gt;:50030).</p> <p>The Maps jobs completed 100% and Reduce jobs completed only 23.17% after that its not moving further for so many hours.</p> <p>The same issue with Hive queries also. </p> <p>Note: The process is still running on that machine. The script also not complicated. Just a simple script to dump the records. Pig and Hive not used simultaneously.</p> <p>Is there anything need to configure?</p> <p>Thanks in advance. </p> http://www.datastax.com/support-forums/topic/cassandra-restore-not-working#post-7967 Thu, 13 Dec 2012 12:52:22 +0000 habeebraja 7967@http://www.datastax.com/support-forums/ <p>Thanks Nick.. </p> http://www.datastax.com/support-forums/topic/cassandra-restore-not-working#post-7949 Tue, 11 Dec 2012 16:56:29 +0000 nickmbailey 7949@http://www.datastax.com/support-forums/ <p>Cassandra uses the column family name in the path as well. Did you put the sstable files in the correct path?</p> <p>var/lib/cassandra/data/&lt;keyspace&gt;/&lt;column_family&gt;/</p> <p>Also, just to note, restoring a snapshot will not recreate the schema. You do need to create the same keyspace and column family names that you used on the old cluster. </p> http://www.datastax.com/support-forums/topic/cassandra-restore-not-working#post-7936 Tue, 11 Dec 2012 10:03:06 +0000 habeebraja 7936@http://www.datastax.com/support-forums/ <p>Hi,</p> <p>We had a cassandra cluster(DSE 2.1.1-1) with few nodes. We want to restore the data into new cassandra cluster(DSE 2.2.1). </p> <p>The steps we followed below,</p> <p>1. Took a snapshot from one of the node in existing cluster.<br /> 2. Brought up a new cluster with DSE 2.2.1<br /> 3. Just created a keyspace in the new cluster.<br /> 4. copied all the files from &lt;snapshot&gt;/&lt;timestamp&gt; to /var/lib/cassandra/data/&lt;keyspace&gt;/<br /> 5. started the cassandra service by using (dse cassandra)</p> <p>But cant retrieve the data through cassandra-cli</p> <p>We tried another option also.</p> <p>1. Created keyspace and column families in the new cassandra cluster<br /> 2. restored the snapshot </p> <p>This also not working.</p> <p>The links we followed,<br /> <a href="http://www.datastax.com/docs/1.1/operations/backup_restore" rel="nofollow">http://www.datastax.com/docs/1.1/operations/backup_restore</a><br /> <a href="http://jonathanhui.com/cassandra-data-maintenance-backup-and-system-recovery" rel="nofollow">http://jonathanhui.com/cassandra-data-maintenance-backup-and-system-recovery</a></p> <p>Is there anything we missed?</p> <p>Thanks in advance. </p> http://www.datastax.com/support-forums/topic/issues-while-starting-dse-211-1-as-hadoop-enabled-1#post-7887 Fri, 07 Dec 2012 10:57:39 +0000 habeebraja 7887@http://www.datastax.com/support-forums/ <p>Thanks Sven. Let me try with your suggestions.</p> <p>Regards,<br /> Habeeb </p> http://www.datastax.com/support-forums/topic/issues-while-starting-dse-211-1-as-hadoop-enabled-1#post-7875 Fri, 07 Dec 2012 01:27:32 +0000 Sven 7875@http://www.datastax.com/support-forums/ <p>To turn a node into an analytics node, please follow the instructions on <a href="http://www.datastax.com/docs/datastax_enterprise2.2/reference/start_stop_dse" rel="nofollow">http://www.datastax.com/docs/datastax_enterprise2.2/reference/start_stop_dse</a> (see the Starting DataStax Enterprise as a Service section. You basically want to edit /etc/default/dse to set HADOOP_ENABLED=1. Note that you need to restart the service). </p> <p>By running "dse cassandra -t -j" you are defacto trying to start a second instance (hence the port conflict).</p> <p>Thanks,<br /> Sven </p> http://www.datastax.com/support-forums/topic/issues-while-starting-dse-211-1-as-hadoop-enabled-1#post-7876 Fri, 07 Dec 2012 01:27:32 +0000 Sven 7876@http://www.datastax.com/support-forums/ <p>To turn a node into an analytics node, please follow the instructions on <a href="http://www.datastax.com/docs/datastax_enterprise2.2/reference/start_stop_dse" rel="nofollow">http://www.datastax.com/docs/datastax_enterprise2.2/reference/start_stop_dse</a> (see the Starting DataStax Enterprise as a Service section. You basically want to edit /etc/default/dse to set HADOOP_ENABLED=1. Note that you need to restart the service). </p> <p>By running "dse cassandra -t -j" you are defacto trying to start a second instance (hence the port conflict).</p> <p>Thanks,<br /> Sven </p> http://www.datastax.com/support-forums/topic/issues-while-starting-dse-211-1-as-hadoop-enabled-1#post-7856 Thu, 06 Dec 2012 13:40:15 +0000 habeebraja 7856@http://www.datastax.com/support-forums/ <p>Hi,</p> <p>We have couple of nodes in our cassandra cluster and the DSE version is 2.1.1-1. We down one of the node and start that node as hadoop enabled(changed the file /etc/default/dse).</p> <p>Then we started that node by using the command (service dse start)<br /> We got the message like, 'DSE started with hadoop enabled'. But the node looks down in the ring. </p> <p>So we start the cassnadra service by using the command 'dse cassandra -t -j'(to enable jobtracker). But we are not able to start and the error message looks, 'The port is already used'.</p> <p>Out intention is to run pig scripts on dse.</p> <p>Is there anything we missed? </p> <p>Thanks in advance. </p>