Thanks for your reply, having COUNT() return null makes no sense to mean but I suppose that's a design choice, it does not explains my second issue though, is there any way to do what I wanted ?
I tried this since deadman does not appear to work either for me (my other post on the mailing list), I initially hoped that kapacitor might help me remove my own code to raise the alert but I doubt that more and more as I play with it... :( On 7 November 2016 at 16:38, Sean Beckett <[email protected]> wrote: > COUNT returns null, not zero, if there are no matching points: > https://github.com/influxdata/influxdb/issues/6412 > > On Mon, Nov 7, 2016 at 3:49 AM, Julien Ammous <[email protected]> wrote: > >> Hi, >> I still trying to figure out how tick scripts works, my latest attempt is >> this: >> >> batch >> |query('select COUNT(*) from metrics.raw.loss') >> .period(10s) >> .every(10s) >> .groupBy(time(10s)) >> |httpOut('out') >> >> I also tried that way: >> >> batch >> |query('select * from metrics.raw.loss') >> .period(10s) >> .every(10s) >> |count('value') >> |httpOut('out') >> >> >> In both cases I get weird results... >> >> My first issue is that the http endpoint contains nothing as long as no >> points are returned by the query, which makes no sense to me since I am >> querying the count not the data themselves >> >> The second issue is that once 1 or more row are available the http page >> is updated and that is fine but started from then the page will never be >> updated again, let's say I insert a row and wait, I will get a correct json >> with a count value of 1, now I insert two other rows and wait and... >> nothing, the http output still says count 1 and the timestamp didn't change >> althought I saw the query executed on the influxdb server console. >> >> That's really frustrating, a lot of hidden things seems to happen behind >> the scene and that's a real pain to debug, the task http endpoint helps a >> bit but not that much... >> >> >> >> >> >> >> >> -- >> Remember to include the version number! >> --- >> You received this message because you are subscribed to the Google Groups >> "InfluxData" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/influxdb. >> To view this discussion on the web visit https://groups.google.com/d/ms >> gid/influxdb/e28f42ff-89cf-4d28-a0b1-cd58fae11be9%40googlegroups.com >> <https://groups.google.com/d/msgid/influxdb/e28f42ff-89cf-4d28-a0b1-cd58fae11be9%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Sean Beckett > Director of Support and Professional Services > InfluxDB > > -- > Remember to include the version number! > --- > You received this message because you are subscribed to a topic in the > Google Groups "InfluxData" group. > To unsubscribe from this topic, visit https://groups.google.com/d/ > topic/influxdb/S6rIMs3Xeys/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/influxdb. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/influxdb/CALGqCvM-AU5hLW-LAXcDhdHZq%2BwBKcq- > wbqf_thW43Y80GpzFQ%40mail.gmail.com > <https://groups.google.com/d/msgid/influxdb/CALGqCvM-AU5hLW-LAXcDhdHZq%2BwBKcq-wbqf_thW43Y80GpzFQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- Remember to include the version number! --- You received this message because you are subscribed to the Google Groups "InfluxData" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/influxdb. To view this discussion on the web visit https://groups.google.com/d/msgid/influxdb/CAA0q%3DtJJanDgyGushz36hKN-SEDCY3wyPS1sN6oJ52gK6nQ-Qg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
