hector-client/hector

Hector HUnavailableException in Cassandra cluster

Opened this issue · 4 comments

nivance commented

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 commented

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 commented

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" notifications@github.com 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.

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nivance commented

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 commented

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" notifications@github.com 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.

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