cassandra 1,2 beta multinode setup

(8 posts) (4 voices)

• Started 6 months ago by sridanu
• Latest reply from Scheidecker
• This topic is resolved

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1. 

   sridanu
   Member

   Hi,

   im testing the beta on a 2 node setup. Problem is i cant seem to get the 2nd node to connect to the 1st node.

   below are the cassandra.yaml files (i only put the parts needed for the config)

   seed node:
   

   initial_token: 0
   seed_provider:
       - class_name: org.apache.cassandra.locator.SimpleSeedProvider
         parameters:
             - seeds: "1.1.1.1"
   listen_address: 1.1.1.1
   rpc_address: 1.1.1.1
   rpc_port: 9161

   2nd node:
   

   initial_token: 85070591730234615865843651857942052864
   seed_provider:
       - class_name: org.apache.cassandra.locator.SimpleSeedProvider
         parameters:
             - seeds: "1.1.1.1"
   listen_address: 2.2.2.2
   rpc_address: 2.2.2.2
   rpc_port: 9161

   the error i get is
   

   [search@ics-sc-sr01r02f2 apache-cassandra-120-beta]$ export CASSANDRA_HOME=/usr/fast/apache-cassandra-120-beta;export JAVA_HOME=/usr/fast/jdk1.6.0_24;/usr/fast/apache-cassandra-120-beta/bin/cassandra -f
   xss =  -ea -javaagent:/usr/fast/apache-cassandra-120-beta/lib/jamm-0.2.5.jar -XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42 -Xms5994M -Xmx5994M -Xmn1498M -XX:+HeapDumpOnOutOfMemoryError -Xss180k
    INFO 15:55:06,329 Logging initialized
    INFO 15:55:06,559 Loading settings from file:/usr/fast/apache-cassandra-120-beta/conf/cassandra.yaml
    INFO 15:55:06,718 DiskAccessMode 'auto' determined to be mmap, indexAccessMode is mmap
    INFO 15:55:06,718 disk_failure_policy is stop
    INFO 15:55:06,724 Global memtable threshold is enabled at 1948MB
   ERROR 15:55:06,840 Fatal configuration error
   org.apache.cassandra.exceptions.ConfigurationException: For input string: "85070591730234615865843651857942052864"
           at org.apache.cassandra.dht.Murmur3Partitioner$1.validate(Murmur3Partitioner.java:178)
           at org.apache.cassandra.config.DatabaseDescriptor.loadYaml(DatabaseDescriptor.java:443)
           at org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:120)
           at org.apache.cassandra.utils.FBUtilities.getLocalAddress(FBUtilities.java:129)
           at org.apache.cassandra.tracing.Tracing.<init>(Tracing.java:79)
           at org.apache.cassandra.tracing.Tracing.<clinit>(Tracing.java:67)
           at org.apache.cassandra.tracing.TracingAppender.append(TracingAppender.java:44)
           at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
           at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
           at org.apache.log4j.Category.callAppenders(Category.java:206)
           at org.apache.log4j.Category.forcedLog(Category.java:391)
           at org.apache.log4j.Category.info(Category.java:666)
           at org.apache.cassandra.service.CassandraDaemon.initLog4j(CassandraDaemon.java:100)
           at org.apache.cassandra.service.CassandraDaemon.<clinit>(CassandraDaemon.java:57)
   For input string: "85070591730234615865843651857942052864"
   Fatal configuration error; unable to start server.  See log for stacktrace.

   i can keep the token value empty and start the server but when i check the ring via the nodetool the 2nd node does not show up.

   appreciate any help you can provide. Thanks in advance.

   Posted 6 months ago #
2. 

   nickmbailey
   Key Master

   Cassandra 1.2 uses a new partitioner called 'Murmur3Partitioner'. The murmur 3 partitioner uses tokens in the range -2^63 to 2^63 - 1. It looks like the token you are specifying is outside of that range.

   Posted 6 months ago #
3. 

   sridanu
   Member

   Tx nick for your reply.

   I just used the token gen tool within the Cassandra release. Could you kindly point me to where you got this info from.

   Posted 5 months ago #
4. 

   nickmbailey
   Key Master

   The token generator tool currently only works with the Random Partitioner. Unfortunately there currently isn't much documentation on the 1.2 beta. You have a couple of options

   * Use RandomPartitioner. You can change this in cassandra.yaml. With this the token generating tool will work.
   * Use vnodes. The 1.2 release includes the concept of vnodes where instead of one range, a node owns many distinct ranges. You can set this in cassandra.yaml as well and there are instructions in that file.
   * If you want to use the Murmur3Partitioner without vnodes you can run this python command to get appropriate tokens. Replacing "X" with the number of nodes you have:

   python -c 'print [((2**64 / X) * i) - 2**63 for i in range(X)]'

   Posted 5 months ago #
5. 

   sridanu
   Member

   Tx nick

   Posted 5 months ago #
6. 

   matteraf
   Member

   Hi, Any documentation about this partitioner?
   Thanks

   Posted 5 months ago #
7. 

   nickmbailey
   Key Master

   The DataStax Documentation for 1.2 is still being worked on at the moment. Unfortunately your best bet for the moment is looking at the code or jira.

   Posted 5 months ago #
8. 

   Scheidecker
   Member

   I've done something simpler. I've tried to migrate 1.1 to 1.2 and failed with the nodes tokens. Since I have 5 nodes, then I've done initial_tokens for each like this: 0,1,2,3,4 and it worked. Each node got a number starting with zero.

   Posted 5 months ago #

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