Hi Abhishek & everyone else,
might it be related to https://issues.apache.org/jira/browse/CASSANDRA-7868
?
regards,
Christian
On Tue, Feb 27, 2018 at 12:46 PM, Abhishek Kumar Maheshwari <
abhishek.maheshw...@timesinternet.in> wrote:
> Hi,
>
> Not always. Randomly i am getting this exception. (one observation, mostly
> i got this exception when i add new node in cluster.)
>
> On Tue, Feb 27, 2018 at 4:29 PM, Nicolas Guyomar <
> nicolas.guyo...@gmail.com> wrote:
>
>> Hi,
>>
>> Adding the java-driver ML for further question, because this does look
>> like a bug
>>
>> Are you able to reproduce it a clean environnement using the same C*
>> version and driver version ?
>>
>>
>> On 27 February 2018 at 10:05, Abhishek Kumar Maheshwari <
>> abhishek.maheshw...@timesinternet.in> wrote:
>>
>>> Hi Alex,
>>>
>>> i have only One DC (with name DC1) and have only one keyspace. So i dont
>>> think so both of the scenario is possible. (yes in my case QUORUM is
>>> equivalent
>>> of ALL)
>>>
>>> cqlsh> SELECT * FROM system_schema.keyspaces where
>>> keyspace_name='adlog' ;
>>>
>>> keyspace_name | durable_writes | replication
>>> ---------------+----------------+---------------------------
>>> ----------------------------------------------------
>>> adlog | True | {'DC1': '2', 'class':
>>> 'org.apache.cassandra.locator.NetworkTopologyStrategy'}
>>>
>>>
>>> On Tue, Feb 27, 2018 at 2:27 PM, Oleksandr Shulgin <
>>> oleksandr.shul...@zalando.de> wrote:
>>>
>>>> On Tue, Feb 27, 2018 at 9:45 AM, Abhishek Kumar Maheshwari <
>>>> abhishek.maheshw...@timesinternet.in> wrote:
>>>>
>>>>>
>>>>> i have a KeySpace in Cassandra (cassandra version 3.0.9- total 12
>>>>> Servers )With below definition:
>>>>>
>>>>> {'DC1': '2', 'class': 'org.apache.cassandra.locator.
>>>>> NetworkTopologyStrategy'}
>>>>>
>>>>> Some time i am getting below exception
>>>>>
>>>>> [snip]
>>>>
>>>>> Caused by: com.datastax.driver.core.exceptions.WriteTimeoutException:
>>>>> Cassandra timeout during write query at consistency QUORUM (3 replica were
>>>>> required but only 2 acknowledged the write)
>>>>> at com.datastax.driver.core.excep
>>>>> tions.WriteTimeoutException.copy(WriteTimeoutException.java:100)
>>>>> at com.datastax.driver.core.Respo
>>>>> nses$Error.asException(Responses.java:134)
>>>>> at com.datastax.driver.core.Reque
>>>>> stHandler$SpeculativeExecution.onSet(RequestHandler.java:525)
>>>>> at com.datastax.driver.core.Conne
>>>>> ction$Dispatcher.channelRead0(Connection.java:1077)
>>>>>
>>>>> why its waiting for acknowledged from 3rd server as replication
>>>>> factor is 2?
>>>>>
>>>>
>>>> I see two possibilities:
>>>>
>>>> 1) The data in this keyspace is replicated to another DC, so there is
>>>> also 'DC2': '2', for example, but you didn't show it. In this case QUORUM
>>>> requires more than 2 nodes.
>>>> 2) The write was targeting a table in a different keyspace than you
>>>> think.
>>>>
>>>> In any case QUORUM (or LOCAL_QUORUM) with RF=2 is equivalent of ALL.
>>>> Not sure why would you use it in the first place.
>>>>
>>>> For consistency levels involving quorum you want to go with RF=3 in a
>>>> single DC. For multi DC you should think if you want QUORUM or EACH_QUORUM
>>>> for your writes and figure out the RFs from that.
>>>>
>>>> Cheers,
>>>> --
>>>> Alex
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>> *Thanks & Regards,*
>>> *Abhishek Kumar Maheshwari*
>>> *+91- 9999805591 <+91%2099998%2005591> (Mobile)*
>>>
>>> Times Internet Ltd. | A Times of India Group Company
>>>
>>> FC - 6, Sector 16A, Film City, Noida, U.P. 201301 | INDIA
>>>
>>> *P** Please do not print this email unless it is absolutely necessary.
>>> Spread environmental awareness.*
>>>
>>
>>
>
>
> --
>
> *Thanks & Regards,*
> *Abhishek Kumar Maheshwari*
> *+91- 9999805591 <+91%2099998%2005591> (Mobile)*
>
> Times Internet Ltd. | A Times of India Group Company
>
> FC - 6, Sector 16A, Film City, Noida, U.P. 201301 | INDIA
>
> *P** Please do not print this email unless it is absolutely necessary.
> Spread environmental awareness.*
>
