Aaron, Thanks for the references! I'll try the things you mentioned and see how it goes!
Best, Mohammad On Wed, Jul 10, 2013 at 8:07 PM, aaron morton [via cassandra-u...@incubator.apache.org] < ml-node+s3065146n7588930...@n2.nabble.com> wrote: > Some info on request tracing > http://www.datastax.com/dev/blog/tracing-in-cassandra-1-2 > > 1) Is it possible to log which node provides the real data in a read > operation? > > It's available at the DEBUG level of logging. You probably just want to > enable it on the org.apache.cassandra.db.StorageProxy class, see > log4j-server.properties for info > > 2) Also, is it possible to log the different delays involved in each > operation-- for example, 0.1 seconds to get digests from all nodes, 1 > second > to transfer data, etc.? > > Not Applicable as you've seen, we request to all replicas at the same > time. There is more logging that will show when the responses are > processed, try turning DEBUG logging on for a small 3 node cluster and send > one request. > > Cheers > > ----------------- > Aaron Morton > Freelance Cassandra Consultant > New Zealand > > @aaronmorton > http://www.thelastpickle.com > > On 10/07/2013, at 8:58 AM, Mohit Anchlia <[hidden > email]<http://user/SendEmail.jtp?type=node&node=7588930&i=0>> > wrote: > > There is a new tracing feature in Cassandra 1.2 that might help you with > this. > > On Tue, Jul 9, 2013 at 1:31 PM, Blair Zajac <[hidden > email]<http://user/SendEmail.jtp?type=node&node=7588930&i=1> > > wrote: > >> No idea on the logging, I'm pretty new to Cassandra. >> >> Regards, >> Blair >> >> On Jul 9, 2013, at 12:50 PM, hajjat <[hidden >> email]<http://user/SendEmail.jtp?type=node&node=7588930&i=2>> >> wrote: >> >> > Blair, thanks for the clarification! My friend actually just told me the >> > same.. >> > >> > Any idea on how to do logging?? >> > >> > Thanks! >> > >> > >> > >> > -- >> > View this message in context: >> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Logging-Cassandra-Reads-Writes-tp7588893p7588896.html >> > Sent from the [hidden >> email]<http://user/SendEmail.jtp?type=node&node=7588930&i=3>mailing list >> archive at >> Nabble.com. >> > >> > > > > > ------------------------------ > 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/Logging-Cassandra-Reads-Writes-tp7588893p7588930.html > To unsubscribe from Logging Cassandra Reads/Writes, click > here<http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=7588893&code=aGFqamF0QHB1cmR1ZS5lZHV8NzU4ODg5M3w4NTA5MDAwMjU=> > . > 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.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> > -- *Mohammad Hajjat* *Ph.D. Student* *Electrical and Computer Engineering* *Purdue University* -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Logging-Cassandra-Reads-Writes-tp7588893p7588957.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.
