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Posted to issues-all@impala.apache.org by "Xianqing He (Jira)" <ji...@apache.org> on 2021/07/19 11:47:00 UTC
[jira] [Created] (IMPALA-10806) Create single node plan is slow
when hundreds of inline views are joined
Xianqing He created IMPALA-10806:
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Summary: Create single node plan is slow when hundreds of inline views are joined
Key: IMPALA-10806
URL: https://issues.apache.org/jira/browse/IMPALA-10806
Project: IMPALA
Issue Type: Improvement
Components: Frontend
Affects Versions: Impala 4.0, Impala 3.2.0
Reporter: Xianqing He
Assignee: Xianqing He
Fix For: Impala 4.1
The sql form like
{code:java}
select c1 from (select c1, id from view1 where c1>10) t1 join (select c2, id from view2 where c1>10) t2 on t1.id=t2.id join ...{code}
Query Compilation: 3s642ms
- Metadata of all 90 tables cached: 1.757ms (1.757ms)
- Analysis finished: 229.621ms (227.863ms)
- Authorization finished (noop): 235.024ms (5.402ms)
- Value transfer graph computed: 275.756ms (40.731ms)
- Single node plan created: 3s518ms ({color:#FF0000}3s242ms{color})
- Runtime filters computed: 3s625ms (106.697ms)
- Distributed plan created: 3s625ms (424.022us)
- Planning finished: 3s642ms (17.134ms)
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