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.
From: Jeremiah Jordan [mailto:jeremiah.jor...@morningstar.com]
Sent: Wednesday, January 18, 2012 4:34 AM
To: user@cassandra.apache.org
Subject: Re: nodetool ring question
There were some nodetool ring load reporting issues with early version of 1.0.X
don't remember when they were fixed, but that could be your issue. Are you
using compressed column families, a lot of the issues were with those.
Might update to 1.0.7.
-Jeremiah
On 01/16/2012 04:04 AM, Michael Vaknine wrote:
Hi,
I have a 4 nodes cluster 1.0.3 version
This is what I get when I run nodetool ring
Address DC Rack Status State Load Owns
Token
127605887595351923798765477786913079296
10.8.193.87 datacenter1 rack1 Up Normal 46.47 GB 25.00% 0
10.5.7.76 datacenter1 rack1 Up Normal 48.01 GB 25.00%
42535295865117307932921825928971026432
10.8.189.197 datacenter1 rack1 Up Normal 53.7 GB 25.00%
85070591730234615865843651857942052864
10.5.3.17 datacenter1 rack1 Up Normal 43.49 GB 25.00%
127605887595351923798765477786913079296
I have finished running repair on all 4 nodes.
I have less then 10 GB on the /var/lib/cassandra/data/ folders
My question is Why nodetool reports almost 50 GB on each node?
Thanks
Michael
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