Re: Problems Starting Cassandra Server -

Tue, 17 Jan 2012 19:38:16 -0800 

It probably would be useful to know what your yaml file looks like.

On 01/17/2012 08:58 PM, Asha Subramanian wrote:
I am a new user of Cassandra and want to understand the basics of Cassandra before moving to cluster installations etc..
I picked up the latest version of Cassandra from the home page 1.0.7 released on 2012/01/16. I am installing on Windows 7
I have followed all the instx for changing the Cassandra.yaml and also the environment variables.. However when I start the server, I get the following error -- 

What could be the problem ???

F:\cassandra\bin>cassandra.bat

Starting Cassandra Server

INFO 07:22:37,766 Logging initialized

INFO 07:22:37,828 JVM vendor/version: Java HotSpot(TM) Client VM/1.6.0_30

INFO 07:22:37,844 Heap size: 1070399488/1070399488
INFO 07:22:37,844 Classpath: F:\cassandra\conf;F:\cassandra\lib\antlr-3.2.jar;F 

:\cassandra\lib\apache-cassandra-1.0.6.jar;F:\cassandra\lib\apache-cassandra-cli

entutil-1.0.6.jar;F:\cassandra\lib\apache-cassandra-thrift-1.0.6.jar;F:\cassandr

a\lib\avro-1.4.0-fixes.jar;F:\cassandra\lib\avro-1.4.0-sources-fixes.jar;F:\cass

andra\lib\commons-cli-1.1.jar;F:\cassandra\lib\commons-codec-1.2.jar;F:\cassandr

a\lib\commons-lang-2.4.jar;F:\cassandra\lib\compress-lzf-0.8.4.jar;F:\cassandra\

lib\concurrentlinkedhashmap-lru-1.2.jar;F:\cassandra\lib\guava-r08.jar;F:\cassan

dra\lib\high-scale-lib-1.1.2.jar;F:\cassandra\lib\jackson-core-asl-1.4.0.jar;F:\

cassandra\lib\jackson-mapper-asl-1.4.0.jar;F:\cassandra\lib\jamm-0.2.5.jar;F:\ca

ssandra\lib\jline-0.9.94.jar;F:\cassandra\lib\json-simple-1.1.jar;F:\cassandra\l

ib\libthrift-0.6.jar;F:\cassandra\lib\log4j-1.2.16.jar;F:\cassandra\lib\servlet-

api-2.5-20081211.jar;F:\cassandra\lib\slf4j-api-1.6.1.jar;F:\cassandra\lib\slf4j

-log4j12-1.6.1.jar;F:\cassandra\lib\snakeyaml-1.6.jar;F:\cassandra\lib\snappy-ja

va-1.0.4.1.jar;F:\cassandra\build\classes\main;F:\cassandra\build\classes\thrift

;F:\cassandra\lib\jamm-0.2.5.jar

INFO 07:22:37,859 JNA not found. Native methods will be disabled.
INFO 07:22:37,891 Loading settings from file:/F:/cassandra/conf/cassandra.yaml 

ERROR 07:22:38,234 Fatal configuration error error
Can't construct a java object for tag:yaml.org,2002:org.apache.cassandra.config.
Config; exception=Cannot create property=data_file_directories for JavaBean=org.
apache.cassandra.config.Config@1329642; No single argument constructor found for 

class [Ljava.lang.String;

in "<reader>", line 10, column 1:

    cluster_name: 'Test Cluster'

    ^
at org.yaml.snakeyaml.constructor.Constructor$ConstructYamlObject.constr 

uct(Constructor.java:372)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseCo 

nstructor.java:177)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(Base 

Constructor.java:136)
at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseCons 

tructor.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>(DatabaseDescr 

iptor.java:133)
at org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCa 

ssandraDaemon.java:125)
at org.apache.cassandra.service.AbstractCassandraDaemon.activate(Abstrac 

tCassandraDaemon.java:337)
at org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java 

:107)
Caused by: org.yaml.snakeyaml.error.YAMLException: Cannot create property=data_f
ile_directories for JavaBean=org.apache.cassandra.config.Config@1329642; No sing 

le argument constructor found for class [Ljava.lang.String;
at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct 

JavaBean2ndStep(Constructor.java:305)
at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct 

(Constructor.java:184)
at org.yaml.snakeyaml.constructor.Constructor$ConstructYamlObject.constr 

uct(Constructor.java:370)

        ... 9 more
Caused by: org.yaml.snakeyaml.error.YAMLException: No single argument constructo 

r found for class [Ljava.lang.String;
at org.yaml.snakeyaml.constructor.Constructor$ConstructScalar.construct( 

Constructor.java:419)
at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseCo 

nstructor.java:177)
at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct 

JavaBean2ndStep(Constructor.java:298)

        ... 11 more
null; Can't construct a java object for tag:yaml.org,2002:org.apache.cassandra.c
onfig.Config; exception=Cannot create property=data_file_directories for JavaBea
n=org.apache.cassandra.config.Config@1329642; No single argument constructor fou 

nd for class [Ljava.lang.String;

Invalid yaml; unable to start server.  See log for stacktrace.

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