in this case, you should follow liyang's advise. Duplicate all the stuff in KYLIN_HOME to another folder(s), with only one conf/kylin.properties's ylin.server.mode set to "all" mode, and the remaining setting to "query" mode. "all" mode means this instance will take charge in building cubes as well as answering queries, meanwhile "query" mode means this instance will not touch cube building.
In this case you'll have multiple instances that can server queries. On Tue, May 5, 2015 at 3:40 PM, dong wang <[email protected]> wrote: > if pointing to the second instance's metadata to a different one, it is not > that useful since actually I want one instance for building cube, one > instance for querying data in that under some circumstances querying data > will cause kylin instance crash, this will affect the cube building if > building cube and querying data are on the same kylin instance~ > > so, I plan to instance 2 kylin instance on 2 different machines~ > > 2015-04-29 19:54 GMT+08:00 Luke Han <[email protected]>: > > > Hi Yang, > > Dong's requirement is to run 2 instances in same box, so that one > could > > for testing and one to serve client. > > Per our discussion, I would like to suggest dong to point the second > > instance's metadata to different one (we have zookeeper locker for job > > engine based on metadata.). > > > > > > @Dong, could you try it your side? > > Thanks. > > > > > > Best Regards! > > --------------------- > > > > Luke Han > > > > 2015-04-29 16:43 GMT+08:00 Li Yang <[email protected]>: > > > > > For the second instance you need to set "kylin.server.mode=query" in > > > kylin.properties. By default the value is "all" which means the > instance > > > play as both query engine and build engine. However only one build > > engine > > > is allowed within a kylin cluster. > > > > > > We need to document this some where... > > > > > > On Wed, Apr 29, 2015 at 9:27 AM, dong wang <[email protected]> > > wrote: > > > > > > > Hi luke, do u mean that we must create multiple kylin instances in > > > > DIFFERENT machines of a cluster? currently, I am trying to create 2 > > > kylin > > > > instances in a pseudo CDH environment on one machine for testing > > purpose > > > > first~ > > > > > > > > 2015-04-28 20:18 GMT+08:00 Luke Han <[email protected]>: > > > > > > > > > looks like your 2nd instance talking to localhost zookeeper: > > > > > > > > > > Opening socket connection to server localhost/ > > > > > 127.0.0.1:2181. Will not attempt to authenticate using SASL > (unknown > > > er > > > > > ror) > > > > > > > > > > could you double check for the host information? > > > > > > > > > > > > > > > Best Regards! > > > > > --------------------- > > > > > > > > > > Luke Han > > > > > > > > > > 2015-04-28 16:11 GMT+08:00 dong wang <[email protected]>: > > > > > > > > > > > First, I changed all the ports that appear in the > tomcat/server.xml > > > to > > > > > > avoid conflicts > > > > > > Second, changed kylin.rest.servers to the same as that of the > > tomcat > > > > for > > > > > > this instance in conf/kylin.properties > > > > > > > > > > > > however, when starting the 2nd tomcat instance, it throws error > > > > > information > > > > > > as below: > > > > > > > > > > > > [Thread-9]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:34,366][INFO][org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:438)] > > > > > > - Initiating client connection, c > > > > > > onnectString=localhost:2181 sessionTimeout=60000 > > > > > > watcher=org.apache.curator.ConnectionState@68702fc0 > > > > > > [Thread-9-SendThread(localhost:2181)]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:34,405][INFO][org.apache.zookeeper.ClientCnxn$SendThread.logStartConnect(Client > > > > > > Cnxn.java:975)] - Opening socket connection to server localhost/ > > > > > > 127.0.0.1:2181. Will not attempt to authenticate using SASL > > (unknown > > > > er > > > > > > ror) > > > > > > [Thread-9-SendThread(localhost:2181)]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:34,409][INFO][org.apache.zookeeper.ClientCnxn$SendThread.primeConnection(Client > > > > > > Cnxn.java:852)] - Socket connection established to localhost/ > > > > > > 127.0.0.1:2181, > > > > > > initiating session > > > > > > [Thread-9-SendThread(localhost:2181)]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:34,423][INFO][org.apache.zookeeper.ClientCnxn$SendThread.onConnected(ClientCnxn > > > > > > .java:1235)] - Session establishment complete on server > localhost/ > > > > > > 127.0.0.1:2181, sessionid = 0x14cf8ec32bb0081, negotiated > timeout > > = > > > 4 > > > > > > 0000 > > > > > > [Thread-9-EventThread]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:34,441][INFO][org.apache.curator.framework.state.ConnectionStateManager.postState(ConnectionSt > > > > > > ateManager.java:228)] - State change: CONNECTED > > > > > > [Thread-9]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:37,451][WARN][org.apache.kylin.job.impl.threadpool.DefaultScheduler.init(DefaultScheduler.java:205)] > > > > > > - fai > > > > > > l to acquire lock, scheduler has not been started > > > > > > [Thread-9]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:37,456][INFO][org.apache.zookeeper.ZooKeeper.close(ZooKeeper.java:684)] > > > > > > - Session: 0x14cf8ec32bb0081 close > > > > > > d > > > > > > [Thread-9-EventThread]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:37,456][INFO][org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:512)] > > > > > > - EventThr > > > > > > ead shut down > > > > > > [Thread-9]:[2015-04-28 > > > > > > > > > > > > > > > > > > > > > > > > > > > 15:44:37,459][ERROR][org.apache.kylin.rest.controller.JobController$1.run(JobController.java:87)] > > > > > > - scheduler ha > > > > > > s not been started > > > > > > > > > > > > > > > > > > > > > -- Regards, *Bin Mahone | 马洪宾* Apache Kylin: http://kylin.io Github: https://github.com/binmahone
