You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@cassandra.apache.org by Oleg Dulin <ol...@gmail.com> on 2012/06/01 16:39:51 UTC
TimedOutException()
We are using Cassandra 1.1.0 with an older Pelops version, but I don't
think that in itself is a problem here.
I am getting this exception:
TimedOutException()
at
org.apache.cassandra.thrift.Cassandra$get_slice_result.read(Cassandra.java:7660)
at
org.apache.cassandra.thrift.Cassandra$Client.recv_get_slice(Cassandra.java:570)
at
org.apache.cassandra.thrift.Cassandra$Client.get_slice(Cassandra.java:542)
at org.scale7.cassandra.pelops.Selector$3.execute(Selector.java:683)
at org.scale7.cassandra.pelops.Selector$3.execute(Selector.java:680)
at org.scale7.cassandra.pelops.Operand.tryOperation(Operand.java:82)
Is my understanding correct that this is where cassandra is telling us
it can't accomplish something within that timeout value -- as opposed
to network timeout ? Where is it set ?
Thanks,
Oleg
Re: TimedOutException()
Posted by aaron morton <aa...@thelastpickle.com>.
> Is the node we are connecting to try to proxy requests ? Wouldn't our
> configuration ensure all nodes have replicas ?
It can still time out even when reading locally. (The thread running the query is waiting on the read thread).
Look in the server side logs to see if there are any errors. If you are getting a timeout in this situation I would guess either the node is heavily overloaded or you are asking for a lot of data from a wide row.
Cheers
-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 2/06/2012, at 11:00 AM, Oleg Dulin wrote:
> Tyler Hobbs <ty...@datastax.com> wrote:
>> On Fri, Jun 1, 2012 at 9:39 AM, Oleg Dulin <ol...@gmail.com> wrote:
>>
>> Is my understanding correct that this is where cassandra is telling us it
>> can't accomplish something within that timeout value -- as opposed to
>> network timeout ? Where is it set ?
>>
>> That's correct. Basically, the coordinator sees that a replica has not
>> responded (or can not respond) before hitting a timeout. This is
>> controlled by rpc_timeout_in_ms in cassandra.yaml.
>>
>> --
>> Tyler Hobbs
>> DataStax <<a href="http://datastax.com/">http://datastax.com/</a>>
>
> So if we are using random partitioner, and read consistency of one, what
> does that mean ?
>
> We have a 3 node cluster, use write / read consistency of one, replication
> factor of 3.
>
> Is the node we are connecting to try to proxy requests ? Wouldn't our
> configuration ensure all nodes have replicas ?
>
Re: TimedOutException()
Posted by Oleg Dulin <ol...@gmail.com>.
Tyler Hobbs <ty...@datastax.com> wrote:
> On Fri, Jun 1, 2012 at 9:39 AM, Oleg Dulin <ol...@gmail.com> wrote:
>
> Is my understanding correct that this is where cassandra is telling us it
> can't accomplish something within that timeout value -- as opposed to
> network timeout ? Where is it set ?
>
> That's correct. Basically, the coordinator sees that a replica has not
> responded (or can not respond) before hitting a timeout. This is
> controlled by rpc_timeout_in_ms in cassandra.yaml.
>
> --
> Tyler Hobbs
> DataStax <<a href="http://datastax.com/">http://datastax.com/</a>>
So if we are using random partitioner, and read consistency of one, what
does that mean ?
We have a 3 node cluster, use write / read consistency of one, replication
factor of 3.
Is the node we are connecting to try to proxy requests ? Wouldn't our
configuration ensure all nodes have replicas ?
Re: TimedOutException()
Posted by Tyler Hobbs <ty...@datastax.com>.
On Fri, Jun 1, 2012 at 9:39 AM, Oleg Dulin <ol...@gmail.com> wrote:
>
> Is my understanding correct that this is where cassandra is telling us it
> can't accomplish something within that timeout value -- as opposed to
> network timeout ? Where is it set ?
>
That's correct. Basically, the coordinator sees that a replica has not
responded (or can not respond) before hitting a timeout. This is
controlled by rpc_timeout_in_ms in cassandra.yaml.
--
Tyler Hobbs
DataStax <http://datastax.com/>