cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Bhuvan Rawal <bhu1ra...@gmail.com>
Subject Re: Getting error while issuing Cassandra stress
Date Fri, 22 Jan 2016 18:39:25 GMT
Thanks for the response Alain,

cqlsh> create keyspace mykeyspace WITH replication =
{'class':'NetworkTopologyStrategy', 'Analytics':2, 'Cassandra':3}
cqlsh> use mykeyspace;
cqlsh:mykeyspace>create table mytable (id int primary key, name text,
address text, phone text);
cqlsh:mykeyspace> insert into mytable (id, name, address, phone) values (1,
'Kiyu','Texas', '555-1212'); # and other similar statement
I then issued the below command from every node and found consistent
results.
cqlsh:mykeyspace> select * from mytable;

// Then i repeated the above steps for NetworkTopologyStrategy and found
same results

I ran basic cassandra stress
seed1 - seed of datacenter 1
 $ cassandra-stress write n=50000 -rate threads=4 -node any_random_ip
 $ cassandra-stress write n=50000 -rate threads=4 -node seed1
 $ cassandra-stress write n=50000 -rate threads=4 -node seed1,seed2
 $ cassandra-stress write n=50000 -rate threads=4 -node
all_8_ip_comma_seperated
 $ cassandra-stress write n=1000000 cl=one -mode native cql3 -schema
keyspace="keyspace1" -pop seq=1..1000000 -node ip1,ip2,ip3,ip4

All of them threw the exception
*com.datastax.driver.core.exceptions.UnavailableException: Not enough
replica available for query at consistency LOCAL_ONE (1 required but only 0
alive)*


I have a feeling that the issue is with datacenter name for some reason,
because in some config files I found DC name to be like DC1/DC2/DC3 in some
it is like Cassandra/Analytics (The ones I had specified while
installation). Im unsure which yaml/property file to look for correct
inconsistency.

(C*heers :) - im so tempted to copy that)

Regards,
Bhuvan

On Fri, Jan 22, 2016 at 8:47 PM, Alain RODRIGUEZ <arodrime@gmail.com> wrote:

> Hi,
>
> The the exact command you ran (stress-tool with options) could be useful
> to help you on that.
>
> However, Im able to create keyspace, tables and insert data using cqlsh
>> and it is replicating fine to all the nodes.
>
>
> Having the schema might be useful too.
>
> Did you ran the cqlsh and the stress-tool from the same server ? If not,
> you might want to check the port you use (9042/9160/...) are open.
> Also, cqlsh uses local_one by default too. If both commands were run
> against the same DC, from the same machine they should behave the same way.
> Are they ?
>
> C*heers,
>
> -----------------
> Alain
>
> The Last Pickle
> http://www.thelastpickle.com
>
>
> 2016-01-22 9:57 GMT+01:00 Bhuvan Rawal <bhu1rawal@gmail.com>:
>
>> Hi,
>>
>> i have created a POC cluster with 2 DC , each having 4 nodes with DSE
>> 4.8.1 installed.
>>
>> On issuing cassandra stress im getting an error  and data is not being
>> inserted:
>> *com.datastax.driver.core.exceptions.UnavailableException: Not enough
>> replica available for query at consistency LOCAL_ONE (1 required but only 0
>> alive)*
>>
>> However, Im able to create keyspace, tables and insert data using cqlsh
>> and it is replicating fine to all the nodes.
>>
>> Details of the cluster can be found below (all the nodes seem to be alive
>> and kicking):
>>
>> $ nodetool status Datacenter: Analytics =====================
>> Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load
>> Tokens Owns Host ID Rack UN 10.41.55.17 428.5 KB 256 ?
>> 39d6d585-e641-4046-9d0b-797356597b5e rack1 UN 10.41.55.19 404.44 KB 256 ?
>> 69edf930-efd9-4d74-a798-f3d4ac02e516 rack1 UN 10.41.55.18 423.21 KB 256 ?
>> b74bab13-09b2-4760-bce9-c8ef05e50f6d rack1 UN 10.41.55.20 683.23 KB 256 ?
>> fb5c4fed-6e1e-4ea8-838d-358106906830 rack1 Datacenter: Cassandra
>> ===================== Status=Up/Down |/
>> State=Normal/Leaving/Joining/Moving -- Address Load Tokens Owns Host ID
>> Rack UN 10.41.55.15 209.4 KB 256 ? ffc3b9a0-5d5c-4a3d-a99e-49d255731278
>> rack1 UN 10.41.55.21 227.44 KB 256 ? c68deba4-b9a2-43fc-bb13-6af74c88c210
>> rack1 UN 10.41.55.23 222.71 KB 256 ? 8229aa87-af00-48fa-ad6b-3066d3dc0e58
>> rack1 UN 10.41.55.22 218.72 KB 256 ? c7ba84fd-7992-41de-8c88-11574a72db99
>> rack1
>>
>> Regards,
>> Bhuvan Rawal
>>
>>
>>
>

Mime
View raw message