Richard Calaba created KYLIN-1857:
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Summary: 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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