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Posted to dev@kylin.apache.org by "Zhong Yanghong (Jira)" <ji...@apache.org> on 2020/05/12 06:03:00 UTC
[jira] [Created] (KYLIN-4492) Bad query leads to full gc
Zhong Yanghong created KYLIN-4492:
-------------------------------------
Summary: Bad query leads to full gc
Key: KYLIN-4492
URL: https://issues.apache.org/jira/browse/KYLIN-4492
Project: Kylin
Issue Type: Bug
Components: Query Engine
Reporter: Zhong Yanghong
The following sql goes into dead loop of calcite sql parser leading to OOM
{code}
select LSTG_FORMAT_NAME,
cast(sum(t.sid_cnt) as bigint) as sid_cnts
from
(select LSTG_FORMAT_NAME,
count(distinct SELLER_ID) as sid_cnt
from TEST_KYLIN_FACT
group by LSTG_FORMAT_NAME) t
group by LSTG_FORMAT_NAME
order by sid_cnts
{code}
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