Dechang Gu created DRILL-4785:
---------------------------------
Summary: Limit 0 queries regressed in Drill 1.7.0
Key: DRILL-4785
URL: https://issues.apache.org/jira/browse/DRILL-4785
Project: Apache Drill
Issue Type: Bug
Components: Functions - Drill
Affects Versions: 1.7.0
Environment: Redhat EL6
Reporter: Dechang Gu
Assignee: Venki Korukanti
Fix For: 1.8.0
We noticed a bunch of limit 0 queries regressed quite a bit: +2500ms, while the
same queries took ~400ms in Apache Drill 1.6.0. 5-6X regression. Further
investigation indicates that most likely the root cause of the regression is in
the commit:
vkorukanti committed with vkorukanti DRILL-4446: Support mandatory work
assignment to endpoint requirement…
commit id: 10afc708600ea9f4cb0e7c2cd981b5b1001fea0d
With drill build on this commit, query takes 3095ms
and in the drillbit.log:
2016-07-15 17:27:55,048 ucs-node2.perf.lab
[28768074-4ed6-a70a-2e6a-add3201ab801:foreman] INFO
o.a.drill.exec.work.foreman.Foreman - Query text for query id
28768074-4ed6-a70a-2e6a-add3201ab801: SELECT * FROM (SELECT CAST(EXTRACT(MONTH
FROM CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) AS
`mn_business_date_ok`,AVG((CASE WHEN ((CAST(EXTRACT(YEAR FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) = 2014) AND
(CAST((EXTRACT(MONTH FROM CAST(`rfm_sales`.`business_date` AS DATE)) - 1) / 3 +
1 AS INTEGER) <= 4)) THEN `rfm_sales`.`pos_netsales` ELSE NULL END)) AS
`avg_Calculation_CIDBACJBCCCBHDGB_ok`,SUM((CASE WHEN ((CAST(EXTRACT(YEAR FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) = 2014) AND
(CAST((EXTRACT(MONTH FROM CAST(`rfm_sales`.`business_date` AS DATE)) - 1) / 3 +
1 AS INTEGER) <= 4)) THEN `rfm_sales`.`pos_netsales` ELSE NULL END)) AS
`sum_Calculation_CIDBACJBCCCBHDGB_ok`,SUM((CASE WHEN ((CAST(EXTRACT(YEAR FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) = 2014) AND
(CAST((EXTRACT(MONTH FROM CAST(`rfm_sales`.`business_date` AS DATE)) - 1) / 3 +
1 AS INTEGER) <= 4)) THEN 1 ELSE NULL END)) AS
`sum_Calculation_CJEBBAEBBFADBDFJ_ok`,SUM((CASE WHEN ((CAST(EXTRACT(YEAR FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) = 2014) AND
(CAST((EXTRACT(MONTH FROM CAST(`rfm_sales`.`business_date` AS DATE)) - 1) / 3 +
1 AS INTEGER) <= 4)) THEN (`rfm_sales`.`pos_comps` + `rfm_sales`.`pos_promos`)
ELSE NULL END)) AS `sum_Net_Sales__YTD___copy__ok` FROM
`dfs.xxx`.`views/rfm_sales` `rfm_sales` GROUP BY CAST(EXTRACT(MONTH FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER)) T LIMIT 0
2016-07-15 17:27:55,664 ucs-node2.perf.lab
[28768074-4ed6-a70a-2e6a-add3201ab801:foreman] INFO
o.a.d.exec.store.parquet.Metadata - Took 208 ms to read metadata from cache file
2016-07-15 17:27:56,783 ucs-node2.perf.lab
[28768074-4ed6-a70a-2e6a-add3201ab801:foreman] INFO
o.a.d.exec.store.parquet.Metadata - Took 129 ms to read metadata from cache file
2016-07-15 17:27:57,960 ucs-node2.perf.lab
[28768074-4ed6-a70a-2e6a-add3201ab801:frag:0:0] INFO
o.a.d.e.w.fragment.FragmentExecutor - 28768074-4ed6-a70a-2e6a-add3201ab801:0:0:
State change requested AWAITING_ALLOCATION --> RUNNING
2016-07-15 17:27:57,961 ucs-node2.perf.lab
[28768074-4ed6-a70a-2e6a-add3201ab801:frag:0:0] INFO
o.a.d.e.w.f.FragmentStatusReporter - 28768074-4ed6-a70a-2e6a-add3201ab801:0:0:
State to report: RUNNING
2016-07-15 17:27:57,989 ucs-node2.perf.lab
[28768074-4ed6-a70a-2e6a-add3201ab801:frag:0:0] INFO
o.a.d.e.w.fragment.FragmentExecutor - 28768074-4ed6-a70a-2e6a-add3201ab801:0:0:
State change requested RUNNING --> FINISHED
2016-07-15 17:27:57,989 ucs-node2.perf.lab
[28768074-4ed6-a70a-2e6a-add3201ab801:frag:0:0] INFO
o.a.d.e.w.f.FragmentStatusReporter - 28768074-4ed6-a70a-2e6a-add3201ab801:0:0:
State to report: FINISHED
while running the same query on the parent commit (commit id
9f4fff800d128878094ae70b454201f79976135d), it only takes 492ms.
and in the drillbit.log:
2016-07-15 17:19:27,309 ucs-node7.perf.lab
[2876826f-ee19-9466-0c0c-869f47c409f8:foreman] INFO
o.a.drill.exec.work.foreman.Foreman - Query text for query id
2876826f-ee19-9466-0c0c-869f47c409f8: SELECT * FROM (SELECT CAST(EXTRACT(MONTH
FROM CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) AS
`mn_business_date_ok`,AVG((CASE WHEN ((CAST(EXTRACT(YEAR FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) = 2014) AND
(CAST((EXTRACT(MONTH FROM CAST(`rfm_sales`.`business_date` AS DATE)) - 1) / 3 +
1 AS INTEGER) <= 4)) THEN `rfm_sales`.`pos_netsales` ELSE NULL END)) AS
`avg_Calculation_CIDBACJBCCCBHDGB_ok`,SUM((CASE WHEN ((CAST(EXTRACT(YEAR FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) = 2014) AND
(CAST((EXTRACT(MONTH FROM CAST(`rfm_sales`.`business_date` AS DATE)) - 1) / 3 +
1 AS INTEGER) <= 4)) THEN `rfm_sales`.`pos_netsales` ELSE NULL END)) AS
`sum_Calculation_CIDBACJBCCCBHDGB_ok`,SUM((CASE WHEN ((CAST(EXTRACT(YEAR FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) = 2014) AND
(CAST((EXTRACT(MONTH FROM CAST(`rfm_sales`.`business_date` AS DATE)) - 1) / 3 +
1 AS INTEGER) <= 4)) THEN 1 ELSE NULL END)) AS
`sum_Calculation_CJEBBAEBBFADBDFJ_ok`,SUM((CASE WHEN ((CAST(EXTRACT(YEAR FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER) = 2014) AND
(CAST((EXTRACT(MONTH FROM CAST(`rfm_sales`.`business_date` AS DATE)) - 1) / 3 +
1 AS INTEGER) <= 4)) THEN (`rfm_sales`.`pos_comps` + `rfm_sales`.`pos_promos`)
ELSE NULL END)) AS `sum_Net_Sales__YTD___copy__ok` FROM
`dfs.xxx`.`views/rfm_sales` `rfm_sales` GROUP BY CAST(EXTRACT(MONTH FROM
CAST(`rfm_sales`.`business_date` AS DATE)) AS INTEGER)) T LIMIT 0
2016-07-15 17:19:27,619 ucs-node7.perf.lab
[2876826f-ee19-9466-0c0c-869f47c409f8:frag:0:0] INFO
o.a.d.e.w.fragment.FragmentExecutor - 2876826f-ee19-9466-0c0c-869f47c409f8:0:0:
State change requested AWAITING_ALLOCATION --> RUNNING
2016-07-15 17:19:27,619 ucs-node7.perf.lab
[2876826f-ee19-9466-0c0c-869f47c409f8:frag:0:0] INFO
o.a.d.e.w.f.FragmentStatusReporter - 2876826f-ee19-9466-0c0c-869f47c409f8:0:0:
State to report: RUNNING
2016-07-15 17:19:27,643 ucs-node7.perf.lab
[2876826f-ee19-9466-0c0c-869f47c409f8:frag:0:0] INFO
o.a.d.e.w.fragment.FragmentExecutor - 2876826f-ee19-9466-0c0c-869f47c409f8:0:0:
State change requested RUNNING --> FINISHED
2016-07-15 17:19:27,644 ucs-node7.perf.lab
[2876826f-ee19-9466-0c0c-869f47c409f8:frag:0:0] INFO
o.a.d.e.w.f.FragmentStatusReporter - 2876826f-ee19-9466-0c0c-869f47c409f8:0:0:
State to report: FINISHED
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