Thank you. I will make sure I use different log files as I had mentioned in my previous post on the client configuration for HTrace.
Thanks, Priyanka On Wed, Aug 5, 2015 at 6:43 PM, Masatake Iwasaki [via Apache HBase] < ml-node+s679495n4073718...@n3.nabble.com> wrote: > Hi Priyanka, > > > If both client process and server use the same file to log htraces, > then is > > there a possibility of corruption while writing to the span log file? > > The client and server are running on the same host? > You should use different output file for each process. > It is not safe to write to the same file from multiple processes > though it is not problem to write spans from multiple threads in single > process. > > Masatake > > > On 8/6/15 01:56, Priyanka Bhalerao-Deshpande wrote: > > Hi Masatake, > > > > I was not able to get the client traces but I can find a workaround to > > generate those spans myself and get a graph. I had one more question > > related to htrace. > > > > If both client process and server use the same file to log htraces, > then is > > there a possibility of corruption while writing to the span log file? > Since > > there will be 2 JVMs writing to the same file. In addition, our client > is > > multithreaded too. I can use synchronize on the client side and make > sure > > multiple threads write the client spans in exclusion, however there > can be > > a problem if a server span is being written at the same time. Let me > know > > what you recommend. Thank you. > > > > Best Regards, > > Priyanka > > > > On Mon, Jul 27, 2015 at 10:51 AM, Masatake Iwasaki [via Apache HBase] < > > [hidden email] <http:///user/SendEmail.jtp?type=node&node=4073718&i=0>> > wrote: > > > >> > Thank you for getting back to me. Yes I see the Client_htrace.out > >> getting > >> > created on the client node. However it is empty. We are using > >> htrace-2.04 > >> > version. I believe that writes the span asynchronously. Also the > >> client node > >> > is running tomcat for serving requests. Would this be a problem? > >> > >> Hmm... Do you have multiple processes on the client? > >> SpanReceiverHost must be initialized in each process. > >> If you call SpanReceiverHost#getInstance in one process and > >> call Trace#startSpan in another process, > >> the client span is not written to file. > >> > >> I think running Tomcat is not related to the issue. > >> > >> > >> > Is there any need to call closeReceivers in the client side code ? > I > >> tried > >> > it but that did not seem to work. > >> > >> SpanReceiverHost#closeReceivers should be called on just before > process > >> exit > >> but spans will be written to file immediately without that. > >> > >> > >> > >> On 7/28/15 01:47, Priyanka B wrote: > >> > Hi Masatake, > >> > > >> > Thank you for getting back to me. Yes I see the Client_htrace.out > >> getting > >> > created on the client node. However it is empty. We are using > >> htrace-2.04 > >> > version. I believe that writes the span asynchronously. Also the > >> client node > >> > is running tomcat for serving requests. Would this be a problem? > >> > > >> > Is there any need to call closeReceivers in the client side code ? > I > >> tried > >> > it but that did not seem to work. > >> > > >> > > >> > Thanks, > >> > Priyanka > >> > > >> > > >> > > >> > -- > >> > View this message in context: > >> http://apache-hbase.679495.n3.nabble.com/HTrace-tp4056705p4073515.html > >> > Sent from the HBase Developer mailing list archive at Nabble.com. > >> > >> > >> > >> > >> ------------------------------ > >> If you reply to this email, your message will be added to the > discussion > >> below: > >> http://apache-hbase.679495.n3.nabble.com/HTrace-tp4056705p4073518.html > >> To unsubscribe from HTrace, click here > >> > < > >> . > >> NAML > >> > < > http://apache-hbase.679495.n3.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.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > > >> > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > http://apache-hbase.679495.n3.nabble.com/HTrace-tp4056705p4073718.html > To unsubscribe from HTrace, click here > <http://apache-hbase.679495.n3.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4056705&code=cHJpeWFua2EuYmhhbGVyYW9AZ21haWwuY29tfDQwNTY3MDV8LTEwODc3MjQ5NTQ=> > . > NAML > <http://apache-hbase.679495.n3.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.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> >
