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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CASSANDRA-2515) Error starting a cassandra 0.8 cluster using the config file from an existing 0.74 cluster <upgrade scenario>
Date Wed, 20 Apr 2011 01:11:05 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-2515?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis resolved CASSANDRA-2515.
---------------------------------------

    Resolution: Not A Problem

0.8 isn't supposed to start up w/ a 0.7 config. diff the two sample files to see what's changed;
in this case it's CASSANDRA-1669.

> Error starting a cassandra 0.8 cluster using the config file from an existing 0.74 cluster
<upgrade scenario>
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-2515
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2515
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.8
>         Environment: 3-node Centos 5.5 cluster on rackspace
>            Reporter: Cathy Daw
>            Priority: Trivial
>
> This is probably just a documentation bug, but very frequently I will see users perform
this same action when upgrading a cluster.
> *Reproduction Steps*
> * Install a 3 node 0.74 cassandra cluster
> * Edit cassandra.yaml for each cluster
> * Start 0.74 do some stuff, shut it down.
> * Install 0.8 on the same cluster, but a different directory
> * Copy the cassandra.yaml from the 0.74 cluster to the 0.8 cluster.
> * Try to startup the 0.8 cluster
> *Error starting an 0.8*
> {code}
> [cassandra@cdaw-qa1 bin]$ ./cassandra -f
>  INFO 00:06:12,875 Logging initialized
>  INFO 00:06:12,891 Heap size: 510263296/511311872
>  INFO 00:06:12,893 JNA not found. Native methods will be disabled.
>  INFO 00:06:12,904 Loading settings from file:/home/cassandra/apr19/conf/cassandra.yaml
> ERROR 00:06:13,041 Fatal configuration error error
> Can't construct a java object for tag:yaml.org,2002:org.apache.cassandra.config.Config;
exception=Cannot create property=seeds for JavaBean=org.apache.cassandra.config.Config@207f5580;
Unable to find property 'seeds' on class: org.apache.cassandra.config.Config
>  in "<reader>", line 10, column 1:
>     cluster_name: 'Test Cluster'
>     ^
> 	at org.yaml.snakeyaml.constructor.Constructor$ConstructYamlObject.construct(Constructor.java:372)
> 	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:177)
> 	at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(BaseConstructor.java:136)
> 	at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:122)
> 	at org.yaml.snakeyaml.Loader.load(Loader.java:52)
> 	at org.yaml.snakeyaml.Yaml.load(Yaml.java:166)
> 	at org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:139)
> 	at org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:98)
> 	at org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:314)
> 	at org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:80)
> Caused by: org.yaml.snakeyaml.error.YAMLException: Cannot create property=seeds for JavaBean=org.apache.cassandra.config.Config@207f5580;
Unable to find property 'seeds' on class: org.apache.cassandra.config.Config
> 	at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:305)
> 	at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct(Constructor.java:184)
> 	at org.yaml.snakeyaml.constructor.Constructor$ConstructYamlObject.construct(Constructor.java:370)
> 	... 9 more
> Caused by: org.yaml.snakeyaml.error.YAMLException: Unable to find property 'seeds' on
class: org.apache.cassandra.config.Config
> 	at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.getProperty(Constructor.java:342)
> 	at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:240)
> 	... 11 more
> null; Can't construct a java object for tag:yaml.org,2002:org.apache.cassandra.config.Config;
exception=Cannot create property=seeds for JavaBean=org.apache.cassandra.config.Config@207f5580;
Unable to find property 'seeds' on class: org.apache.cassandra.config.Config
> Invalid yaml; unable to start server.  See log for stacktrace.
> {code}
> *0.74 cassandra.yaml*
> {noformat}
> # Addresses of hosts that are deemed contact points.
> # Cassandra nodes use this list of hosts to find each other and learn
> # the topology of the ring.  You must change this if you are running
> # multiple nodes!
> seeds:
>     - 184.106.199.149
> {noformat}
> *0.8 cassandra.yaml*
> {noformat}
> # any class that implements the SeedProvider interface and has a constructor that takes
a Map<String, String> of
> # parameters will do.
> seed_provider:
>     # Addresses of hosts that are deemed contact points. 
>     # Cassandra nodes use this list of hosts to find each other and learn
>     # the topology of the ring.  You must change this if you are running
>     # multiple nodes!
>     - class_name: org.apache.cassandra.locator.SimpleSeedProvider
>       parameters:
>           # seeds is actually a comma-delimited list of addresses.
>           - seeds: "184.106.199.149"
> {noformat}

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