What's the meaning of kylin.job.cuboid.size.memhungry.ratio and kylin.job.cuboid.size.ratio?

2016-12-14 Thread Ding Dinghua
Hi, when I am reading the logic when estimating cuboid size, I found the size has been multiply with the configured ratio, I can't get the logic behind this, Could anyone tell me? Thanks -- Ding Dinghua

Why we need gridtable?

2016-11-10 Thread Ding Dinghua
Hi, I am trying to understand kylin 1.5.3 query logic, but I found it is much more difficult to understand than kylin 1.2, mainly because of introduce of gridtable, so I want to ask why gridtable is introduced? -- Ding Dinghua

Re: about count(a particular column) in kylin

2016-08-17 Thread Ding Dinghua
ping... 2016-08-16 21:00 GMT+08:00 Ding Dinghua : > Hi: > Does kylin support count(a particular column) now? >that is, count will skip rows which the particular column value is null. > In our test, I found it is not supported currently(kylin-1.5.2), > and I

about count(a particular column) in kylin

2016-08-16 Thread Ding Dinghua
when I submmit sql like: select dt, count(xxx) from test_table group by dt; The information about the particular column is lost in kylin, so I want to know why? Since I found count(xxx) is support in calcite: https://calcite.apache.org/docs/reference.html -- Ding Dinghua

Re: multiple user in kylin

2016-03-08 Thread Ding Dinghua
purpose. In a > production deployment, suggest you use LDAP to manage the user and roles, > Kylin has the support for LDAP integration. > > 2016-03-08 14:24 GMT+08:00 Ding Dinghua : > >> Hi: >> Does kylin support multiple user besides ADMIN? >> This

multiple user in kylin

2016-03-07 Thread Ding Dinghua
Hi: Does kylin support multiple user besides ADMIN? This may be useful when integrating kylin in our workflow, we may need to do isolation work between different users in hdfs/mr/hive/hbase. Thanks. -- Ding Dinghua