cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Anishek Agarwal <anis...@gmail.com>
Subject Re: Traffic inconsistent across nodes
Date Wed, 13 Apr 2016 04:47:22 GMT
We have two DC one with the above 8 nodes and other with 3 nodes.



On Tue, Apr 12, 2016 at 8:06 PM, Eric Stevens <mightye@gmail.com> wrote:

> Maybe include nodetool status here?  Are the four nodes serving reads in
> one DC (local to your driver's config) while the others are in another?
>
> On Tue, Apr 12, 2016, 1:01 AM Anishek Agarwal <anishek@gmail.com> wrote:
>
>> hello,
>>
>> we have 8 nodes in one cluster and attached is the traffic patterns
>> across the nodes.
>>
>> its very surprising that only 4 nodes show transmitting (purple) packets.
>>
>> our driver configuration on clients has the following load balancing
>> configuration  :
>>
>> new TokenAwarePolicy(
>>         new DCAwareRoundRobinPolicy(configuration.get(Constants.LOCAL_DATA_CENTRE_NAME,
"WDC")),
>>         true)
>>
>>
>> any idea what is that we are missing which is leading to this skewed data
>> read patterns
>>
>> cassandra drivers as below:
>>
>> <dependency>
>>     <groupId>com.datastax.cassandra</groupId>
>>     <artifactId>cassandra-driver-core</artifactId>
>>     <version>2.1.6</version>
>> </dependency>
>> <dependency>
>>     <groupId>com.datastax.cassandra</groupId>
>>     <artifactId>cassandra-driver-mapping</artifactId>
>>     <version>2.1.6</version>
>> </dependency>
>>
>> cassandra version is 2.0.17
>>
>> Thanks in advance for the help.
>>
>> Anishek
>>
>>

Mime
View raw message