Re:Re: Re:Kylin concurrent issue for query engine;

2018-09-26 Thread Ma Gang
Just send prepare request to Kylin server as before, by default, the server side cache is enable: POST /kylin/api/query {"sql":"select minute_start,count(1) from TABLE where minute_start>=? and minute_start 写道: >+1 to add this into Kylin documentation. > >huaicui <270922...@qq.com>

Re: Re:Kylin concurrent issue for query engine;

2018-09-25 Thread ShaoFeng Shi
+1 to add this into Kylin documentation. huaicui <270922...@qq.com> 于2018年9月25日周二 下午5:22写道: > I want to enable this function in V2.5.0, but i don't how to use this > PreparedStatement. > > -- > Sent from: http://apache-kylin.74782.x6.nabble.com/ > -- Best regards, Shaofeng Shi 史少锋

Re: Re:Kylin concurrent issue for query engine;

2018-09-25 Thread huaicui
I want to enable this function in V2.5.0, but i don't how to use this PreparedStatement. -- Sent from: http://apache-kylin.74782.x6.nabble.com/

Re:Kylin concurrent issue for query engine;

2018-09-21 Thread Ma Gang
Could you run jstack on the Kylin process and send out result? So that we can know what the query threads are blocked on. I encountered the same issue when doing load test, and found that most of query threads are blocked on class loading, and the class is code gen by calcite, so we may need