Hector HUnavailableException in Cassandra cluster

[nivance]

The topology is like below in my Cassandra Cluster.
192.168.0.193=DC1:RAC1(seed)
192.168.0.194=DC1:RAC1
192.168.0.188=DC2:RAC1(seed)
192.168.0.197=DC2:RAC1
The keyspace of Cassandra Cluster is :
Strategy Class: org.apache.cassandra.locator.SimpleStrategy
Strategy Options: None
Replication Factor: 1

In my app, I configure CassandraHost in Spring is:
bean id="cassandraHostConfigurator" class="me.prettyprint.cassandra.service.CassandraHostConfigurator"
constructor-arg value="192.168.0.188:9160,192.168.0.193:9160,192.168.0.194:9160,192.168.0.197:9160"

The consistencyLevel of keyspace and column family is default value(QUORUM).

After started my app the exception HUnavailableException occurs:
me.prettyprint.hector.api.exceptions.HUnavailableException: : May not be enough replicas present to handle consistency level.
at me.prettyprint.cassandra.service.ExceptionsTranslatorImpl.translate(ExceptionsTranslatorImpl.java:59) ~[hector-core-1.1-2.jar:na]
at me.prettyprint.cassandra.model.CqlQuery$1.execute(CqlQuery.java:142) ~[hector-core-1.1-2.jar:na]
at me.prettyprint.cassandra.model.CqlQuery$1.execute(CqlQuery.java:106) ~[hector-core-1.1-2.jar:na]
at me.prettyprint.cassandra.service.Operation.executeAndSetResult(Operation.java:104) ~[hector-core-1.1-2.jar:na]
at me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:258) ~[hector-core-1.1-2.jar:na]
at me.prettyprint.cassandra.model.ExecutingKeyspace.doExecuteOperation(ExecutingKeyspace.java:113) ~[hector-core-1.1-2.jar:na]
at me.prettyprint.cassandra.model.CqlQuery.execute(CqlQuery.java:105) ~[hector-core-1.1-2.jar:na]
.....
Caused by: org.apache.cassandra.thrift.UnavailableException: null
at org.apache.cassandra.thrift.Cassandra$execute_cql_query_result.read(Cassandra.java:32755) ~[cassandra-thrift-1.1.0.jar:1.1.0]
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78) ~[libthrift-0.7.0.jar:0.7.0]
at org.apache.cassandra.thrift.Cassandra$Client.recv_execute_cql_query(Cassandra.java:1368) ~[cassandra-thrift-1.1.0.jar:1.1.0]
at org.apache.cassandra.thrift.Cassandra$Client.execute_cql_query(Cassandra.java:1354) ~[cassandra-thrift-1.1.0.jar:1.1.0]
at me.prettyprint.cassandra.model.CqlQuery$1.execute(CqlQuery.java:118) ~[hector-core-1.1-2.jar:na]
... 19 common frames omitted

Is it my configuration error or something?

[nivance]

I change the host config just seeds like below, the app runs ok.

bean id="cassandraHostConfigurator" class="me.prettyprint.cassandra.service.CassandraHostConfigurator"
constructor-arg value="192.168.0.188:9160,192.168.0.193:9160"

I am confused.

[patricioe]

What was the config before your change? I have to provide the config with
some nodes so it can connect to the cluster and discover the rest of the
ring.
On Apr 11, 2013 1:59 AM, "nivance" [email protected] wrote:

I change the host config just seeds like below, the app runs ok.

bean id="cassandraHostConfigurator"
class="me.prettyprint.cassandra.service.CassandraHostConfigurator"
constructor-arg value="192.168.0.188:9160,192.168.0.193:9160"

I am confused.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/610#issuecomment-16223596
.

[nivance]

The first congif is below, but it can't run.
bean id="cassandraHostConfigurator" class="me.prettyprint.cassandra.service.CassandraHostConfigurator"
constructor-arg value="192.168.0.188:9160,192.168.0.193:9160,192.168.0.194:9160,192.168.0.197:9160"

then I change to below, it runs well.
bean id="cassandraHostConfigurator" class="me.prettyprint.cassandra.service.CassandraHostConfigurator"
constructor-arg value="192.168.0.188:9160,192.168.0.193:9160"

the difference between the two configs is that the first config includes all nodes but the second config just includes the seed nodes.

[patricioe]

You may want to check the output of nodetool ring

Seems odd the it doesn't run when specifying all the nodes
On Apr 12, 2013 11:23 PM, "nivance" [email protected] wrote:

The first congif is below, but it can't run.
bean id="cassandraHostConfigurator"
class="me.prettyprint.cassandra.service.CassandraHostConfigurator"
constructor-arg value="192.168.0.188:9160,192.168.0.193:9160,
192.168.0.194:9160,192.168.0.197:9160"

then I change to below, it runs well.
bean id="cassandraHostConfigurator"
class="me.prettyprint.cassandra.service.CassandraHostConfigurator"
constructor-arg value="192.168.0.188:9160,192.168.0.193:9160"

the difference between the two configs is that the first config includes
all nodes but the second config just includes the seed nodes.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/610#issuecomment-16328365
.