[email protected], Henry, Marcel bcc:[email protected]
I believe this is documented as https://issues.cloudera.org/browse/IMPALA-1514. Henry, Marcel, do you know if this will be worked on as part of upcoming scalability improvements? On Fri, Mar 25, 2016 at 8:54 PM, zhen <[email protected]> wrote: > > Recently debug impala performance found that the number of threads > suddenly high and low > > > About two cases > > 1. A complex query will have many fragments > 2. big cluster example ：200 impala ins > 3. many query running > > just now impala do not have thread pool > a .ThriftServer use thread mode > b. stream sender async channel > will create large volumes of threads ，as everyone knows thread create > destroy is high cost in performance！！ > > what is the next plan TODO > > -- > You received this message because you are subscribed to the Google Groups > "Impala Dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. >
