Hi Thanks for the response. For that use case, the counter works fine. I'll change it.
But for some others use cases what I need to do is to obtain the "full list" of users : cqlsh:usmc> select userid from userpixel where trackid = 'ab1' and advid = 'adb1' and country = 'AR' and region = 'C' limit 5000000; And this query is taking more than, *21 seconds aprox.* Could you please confirm if this response time is normal (or usual)? Because in that case, I´m assuming that we will need to put some kind of "memmory cache level" like Redis or CouchDB. Could you please confirm if I'm ok? On Tue, Sep 2, 2014 at 2:47 AM, Stephen Portanova [via cassandra-u...@incubator.apache.org] < ml-node+s3065146n7596577...@n2.nabble.com> wrote: > Count(*) queries are very inefficient - you'll want to take Michael's > advice and use counter tables > > > On Mon, Sep 1, 2014 at 9:26 PM, Johnny Miller <[hidden email] > <http://user/SendEmail.jtp?type=node&node=7596577&i=0>> wrote: > >> Try turning on query tracing to see what's taking lots of time. >> >> On 1 Sep 2014, at 23:54, "Laing, Michael" <[hidden email] >> <http://user/SendEmail.jtp?type=node&node=7596577&i=1>> wrote: >> >> Is there a reason why updating a counter for this information will not >> work for you? >> >> On Monday, September 1, 2014, eduardo.cusa <[hidden email] >> <http://user/SendEmail.jtp?type=node&node=7596577&i=2>> wrote: >> >>> yes, is the same table, my mistake. >>> >>> >>> On Mon, Sep 1, 2014 at 6:35 PM, Laing, Michael [via [hidden email] >>> <http://user/SendEmail.jtp?type=node&node=7596570&i=0>] <[hidden email] >>> <http://user/SendEmail.jtp?type=node&node=7596570&i=1>> wrote: >>> >>>> Is table track_user equivalent to table userpixel? >>>> >>>> On Monday, September 1, 2014, Eduardo Cusa <[hidden email] >>>> <http://user/SendEmail.jtp?type=node&node=7596569&i=0>> wrote: >>>> >>>>> Hi All. I Have a Cluster in Amazon with the following settings: >>>>> >>>>> * 2 Nodes M3.Large >>>>> * Cassandra 2.0.7 >>>>> * Default instaltion on ubuntu >>>>> >>>>> And I have one table with 5.000.000 rows: >>>>> >>>>> >>>>> CREATE TABLE track_user ( userid text, trackid text,date text ,advid >>>>> text, country text, region text, >>>>> PRIMARY KEY( (trackid,advid , country, >>>>> region),userid )); >>>>> >>>>> >>>>> When run the following query take *20 **seconds * to finish : >>>>> >>>>> cqlsh:usmc> select count(*) from userpixel where trackid = 'ab1' and >>>>> advid = 'adb1' and country = 'AR' and region = 'C' limit 5000000; >>>>> >>>>> >>>>> Is this time normal? >>>>> >>>>> There are any way to improve the response? >>>>> >>>>> >>>>> Thanks >>>>> Eduardo >>>>> >>>> >>>> >>>> ------------------------------ >>>> If you reply to this email, your message will be added to the >>>> discussion below: >>>> >>>> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/EC2-Performace-Question-tp7596568p7596569.html >>>> To start a new topic under [hidden email] >>>> <http://user/SendEmail.jtp?type=node&node=7596570&i=2>, email [hidden >>>> email] <http://user/SendEmail.jtp?type=node&node=7596570&i=3> >>>> To unsubscribe from [hidden email] >>>> <http://user/SendEmail.jtp?type=node&node=7596570&i=4>, click here. >>>> NAML >>>> <http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> >>>> >>> >>> >>> ------------------------------ >>> View this message in context: Re: EC2 - Performace Question >>> <http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/EC2-Performace-Question-tp7596568p7596570.html> >>> Sent from the cassandra-user@... mailing list archive >>> <http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/> at >>> Nabble.com. >>> >> > > > -- > Stephen Portanova > (480) 495-2634 > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/EC2-Performace-Question-tp7596568p7596577.html > To start a new topic under cassandra-u...@incubator.apache.org, email > ml-node+s3065146n3065146...@n2.nabble.com > To unsubscribe from cassandra-u...@incubator.apache.org, click here > <http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=3065146&code=ZWR1YXJkby5jdXNhQHVzbWVkaWFjb25zdWx0aW5nLmNvbXwzMDY1MTQ2fC04NTYyNzA1NQ==> > . > NAML > <http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/EC2-Performace-Question-tp7596568p7596580.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.
