[jira] [Closed] (KYLIN-1857) Show available memory on UI - in System Tab (and other runtime statistics)

["nichunen (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-1857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

nichunen closed KYLIN-1857.
---------------------------
    Resolution: Fixed

> Show available memory on UI - in System Tab (and other runtime statistics)
> --------------------------------------------------------------------------
>
>                 Key: KYLIN-1857
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1857
>             Project: Kylin
>          Issue Type: Improvement
>    Affects Versions: v1.5.2, v1.5.2.1
>            Reporter: Richard Calaba
>            Priority: Minor
>
> I have run into situation that Kylin dies (exception in log says heap out of memory) if I try to run 3 parallel cubes with high-cardinality dimensions. It is reproduceable scenario. I have set max snapshot size to 2GB and -Xmx to 16GB. 
> If I run the cube build one-by-one -> Kylin doesn't die. 
> As we have have no idea about memory requirements before we start building the cube(s) then for now it would be beneficial at least to monitor basic Kylin VM statistics, i.e.:
>  -- current memory occupied by snaphots
>  -- total memory allocation & total free memory 
>  -- how many (and which) temporary (intermediate) objects (in hive/hbase/filesystem) are created ... 



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