http://www.datastax.com/support-forums/topic/cassandra-replication-help-required Software, Support, and Training for Apache Cassandra en-US Wed, 19 Jun 2013 08:59:33 +0000 http://bbpress.org/?v=1.0.3 q http://www.datastax.com/support-forums/search.php http://www.datastax.com/support-forums/topic/cassandra-replication-help-required#post-1725 Fri, 20 Apr 2012 09:08:05 +0000 Anonymous 1725@http://www.datastax.com/support-forums/ <p>One more thing if I create keyspace using client to 127.0.0.1 then it dosenot create to 127.0.0.2. </p> http://www.datastax.com/support-forums/topic/cassandra-replication-help-required#post-1723 Fri, 20 Apr 2012 07:45:47 +0000 Anonymous 1723@http://www.datastax.com/support-forums/ <br /> http://www.datastax.com/support-forums/topic/cassandra-replication-help-required#post-1722 Fri, 20 Apr 2012 07:44:48 +0000 Anonymous 1722@http://www.datastax.com/support-forums/ <p>nickmbailey thanks for your message but unfortunately it's not working. Well I have one node cluster and I have divided into two address 127.0.0.1 and 127.0.0.2. Using Cassandra Client if I try to insert the data into 127.0.0.1. The data successfully gets add for 127.0.0.1 and I can view it also but If I try to connect to view from 127.0.0.2, I cannot see any update. There is no data.</p> <p>I think I was unable to explain it well last time.Here is what I did copied two cassandra into different folders with the name Cassandra 1 and Cassandra 2 on same node. Update the Cassandra.yaml accordingly.</p> <p>1</p> <p>cluster_name: 'Test Cluster'<br /> initial_token:<br /> data_file_directories:<br /> - /Cassandra/1/var/lib/cassandra/data</p> <p># commit log<br /> commitlog_directory: /Cassandra/1/var/lib/cassandra/commitlog</p> <p># saved caches<br /> saved_caches_directory: /Cassandra/1/var/lib/cassandra/saved_caches</p> <p> - seeds: "127.0.0.1,127.0.0.2"</p> <p>listen_address: 127.0.0.1</p> <p>rpc_address: 127.0.0.1</p> <p>2</p> <p>cluster_name: 'Test Cluster'<br /> initial_token:<br /> data_file_directories:<br /> - /Cassandra/2/var/lib/cassandra/data</p> <p># commit log<br /> commitlog_directory: /Cassandra/2/var/lib/cassandra/commitlog</p> <p># saved caches<br /> saved_caches_directory: /Cassandra/1/var/lib/cassandra/saved_caches</p> <p> - seeds: "127.0.0.1,127.0.0.2"</p> <p>listen_address: 127.0.0.2</p> <p>rpc_address: 127.0.0.2</p> <p>The others settings are the default setting and I have not modified anything. Then I create a keyspace and column family using</p> <p>CREATE KEYSPACE demo<br /> with placement_strategy = 'org.apache.cassandra.locator.SimpleStrategy'<br /> and strategy_options = [{replication_factor:2}]; </p> <p>use demo; </p> <p>create column family order with comparator=UTF8Type and key_validation_class=UTF8Type and default_validation_class=UTF8Type and column_metadata=[{column_name: member, validation_class: UTF8Type},{column_name: user, validation_class: UTF8Type, index_type: KEYS},{column_name: instrument, validation_class: UTF8Type},{column_name: price, validation_class: DoubleType}, {column_name: quantity, validation_class: Int32Type},{column_name:datetime, validation_class: DateType}]; </p> <p>Now if I try to connect to 127.0.0.1 and insert the data, I belive that data should be inserted for both 127.0.0.1 and 127.0.0.2</p> <p>Is there anything wrong ? What should I do to make it workable. </p> http://www.datastax.com/support-forums/topic/cassandra-replication-help-required#post-1710 Thu, 19 Apr 2012 15:49:04 +0000 nickmbailey 1710@http://www.datastax.com/support-forums/ <p>The replication_factor setting indicates how many individual nodes to store data on. Since you are only using a 1 node installation, a replication factor of 2 is invalid. If you change the replication factor to 1, things should work. </p> http://www.datastax.com/support-forums/topic/cassandra-replication-help-required#post-1709 Thu, 19 Apr 2012 13:58:36 +0000 Anonymous 1709@http://www.datastax.com/support-forums/ <p>Hi Everyone, </p> <p>I have configured the cassandra cluster on single window machine and I am trying to insert the data but somehow I am not able to get replication (Same node with two replication). Here is what I am doing. </p> <p>CREATE KEYSPACE demo<br /> with placement_strategy = 'org.apache.cassandra.locator.SimpleStrategy'<br /> and strategy_options = [{replication_factor:2}]; </p> <p>use demo; </p> <p>create column family order with comparator=UTF8Type and key_validation_class=UTF8Type and default_validation_class=UTF8Type and column_metadata=[{column_name: member, validation_class: UTF8Type},{column_name: user, validation_class: UTF8Type, index_type: KEYS},{column_name: instrument, validation_class: UTF8Type},{column_name: price, validation_class: DoubleType}, {column_name: quantity, validation_class: Int32Type},{column_name:datetime, validation_class: DateType}]; </p> <p>set[KEY]['member'] = 'Ansar';</p> <p>it works fine if I get it from the same client but when I try to get it from different client using different server then it return 0 rows which means there is replication problem.</p> <p>Can you please help me out, how I can insert the data in both nodes ? </p> <p>-Ansar </p>