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Posted to dev@hive.apache.org by "Gunther Hagleitner (JIRA)" <ji...@apache.org> on 2014/10/11 01:54:39 UTC
[jira] [Updated] (HIVE-7723) Explain plan for complex query with
lots of partitions is slow due to in-efficient collection used to find a
matching ReadEntity
[ https://issues.apache.org/jira/browse/HIVE-7723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gunther Hagleitner updated HIVE-7723:
-------------------------------------
Attachment: HIVE-7723.10.patch
> Explain plan for complex query with lots of partitions is slow due to in-efficient collection used to find a matching ReadEntity
> --------------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-7723
> URL: https://issues.apache.org/jira/browse/HIVE-7723
> Project: Hive
> Issue Type: Bug
> Components: CLI, Physical Optimizer
> Affects Versions: 0.13.1
> Reporter: Mostafa Mokhtar
> Assignee: Mostafa Mokhtar
> Fix For: 0.14.0
>
> Attachments: HIVE-7723.1.patch, HIVE-7723.10.patch, HIVE-7723.2.patch, HIVE-7723.3.patch, HIVE-7723.4.patch, HIVE-7723.5.patch, HIVE-7723.6.patch, HIVE-7723.7.patch, HIVE-7723.8.patch
>
>
> Explain on TPC-DS query 64 took 11 seconds, when the CLI was profiled it showed that ReadEntity.equals is taking ~40% of the CPU.
> ReadEntity.equals is called from the snippet below.
> Again and again the set is iterated over to get the actual match, a HashMap is a better option for this case as Set doesn't have a Get method.
> Also for ReadEntity equals is case-insensitive while hash is , which is an undesired behavior.
> {code}
> public static ReadEntity addInput(Set<ReadEntity> inputs, ReadEntity newInput) {
> // If the input is already present, make sure the new parent is added to the input.
> if (inputs.contains(newInput)) {
> for (ReadEntity input : inputs) {
> if (input.equals(newInput)) {
> if ((newInput.getParents() != null) && (!newInput.getParents().isEmpty())) {
> input.getParents().addAll(newInput.getParents());
> input.setDirect(input.isDirect() || newInput.isDirect());
> }
> return input;
> }
> }
> assert false;
> } else {
> inputs.add(newInput);
> return newInput;
> }
> // make compile happy
> return null;
> }
> {code}
> This is the query used :
> {code}
> select cs1.product_name ,cs1.store_name ,cs1.store_zip ,cs1.b_street_number ,cs1.b_streen_name ,cs1.b_city
> ,cs1.b_zip ,cs1.c_street_number ,cs1.c_street_name ,cs1.c_city ,cs1.c_zip ,cs1.syear ,cs1.cnt
> ,cs1.s1 ,cs1.s2 ,cs1.s3
> ,cs2.s1 ,cs2.s2 ,cs2.s3 ,cs2.syear ,cs2.cnt
> from
> (select i_product_name as product_name ,i_item_sk as item_sk ,s_store_name as store_name
> ,s_zip as store_zip ,ad1.ca_street_number as b_street_number ,ad1.ca_street_name as b_streen_name
> ,ad1.ca_city as b_city ,ad1.ca_zip as b_zip ,ad2.ca_street_number as c_street_number
> ,ad2.ca_street_name as c_street_name ,ad2.ca_city as c_city ,ad2.ca_zip as c_zip
> ,d1.d_year as syear ,d2.d_year as fsyear ,d3.d_year as s2year ,count(*) as cnt
> ,sum(ss_wholesale_cost) as s1 ,sum(ss_list_price) as s2 ,sum(ss_coupon_amt) as s3
> FROM store_sales
> JOIN store_returns ON store_sales.ss_item_sk = store_returns.sr_item_sk and store_sales.ss_ticket_number = store_returns.sr_ticket_number
> JOIN customer ON store_sales.ss_customer_sk = customer.c_customer_sk
> JOIN date_dim d1 ON store_sales.ss_sold_date_sk = d1.d_date_sk
> JOIN date_dim d2 ON customer.c_first_sales_date_sk = d2.d_date_sk
> JOIN date_dim d3 ON customer.c_first_shipto_date_sk = d3.d_date_sk
> JOIN store ON store_sales.ss_store_sk = store.s_store_sk
> JOIN customer_demographics cd1 ON store_sales.ss_cdemo_sk= cd1.cd_demo_sk
> JOIN customer_demographics cd2 ON customer.c_current_cdemo_sk = cd2.cd_demo_sk
> JOIN promotion ON store_sales.ss_promo_sk = promotion.p_promo_sk
> JOIN household_demographics hd1 ON store_sales.ss_hdemo_sk = hd1.hd_demo_sk
> JOIN household_demographics hd2 ON customer.c_current_hdemo_sk = hd2.hd_demo_sk
> JOIN customer_address ad1 ON store_sales.ss_addr_sk = ad1.ca_address_sk
> JOIN customer_address ad2 ON customer.c_current_addr_sk = ad2.ca_address_sk
> JOIN income_band ib1 ON hd1.hd_income_band_sk = ib1.ib_income_band_sk
> JOIN income_band ib2 ON hd2.hd_income_band_sk = ib2.ib_income_band_sk
> JOIN item ON store_sales.ss_item_sk = item.i_item_sk
> JOIN
> (select cs_item_sk
> ,sum(cs_ext_list_price) as sale,sum(cr_refunded_cash+cr_reversed_charge+cr_store_credit) as refund
> from catalog_sales JOIN catalog_returns
> ON catalog_sales.cs_item_sk = catalog_returns.cr_item_sk
> and catalog_sales.cs_order_number = catalog_returns.cr_order_number
> group by cs_item_sk
> having sum(cs_ext_list_price)>2*sum(cr_refunded_cash+cr_reversed_charge+cr_store_credit)) cs_ui
> ON store_sales.ss_item_sk = cs_ui.cs_item_sk
> WHERE
> cd1.cd_marital_status <> cd2.cd_marital_status and
> i_color in ('maroon','burnished','dim','steel','navajo','chocolate') and
> i_current_price between 35 and 35 + 10 and
> i_current_price between 35 + 1 and 35 + 15
> and ss_sold_date between '2000-01-01' and '2000-12-31'
> group by i_product_name ,i_item_sk ,s_store_name ,s_zip ,ad1.ca_street_number
> ,ad1.ca_street_name ,ad1.ca_city ,ad1.ca_zip ,ad2.ca_street_number
> ,ad2.ca_street_name ,ad2.ca_city ,ad2.ca_zip ,d1.d_year ,d2.d_year ,d3.d_year
> ) cs1
> JOIN
> (select i_product_name as product_name ,i_item_sk as item_sk ,s_store_name as store_name
> ,s_zip as store_zip ,ad1.ca_street_number as b_street_number ,ad1.ca_street_name as b_streen_name
> ,ad1.ca_city as b_city ,ad1.ca_zip as b_zip ,ad2.ca_street_number as c_street_number
> ,ad2.ca_street_name as c_street_name ,ad2.ca_city as c_city ,ad2.ca_zip as c_zip
> ,d1.d_year as syear ,d2.d_year as fsyear ,d3.d_year as s2year ,count(*) as cnt
> ,sum(ss_wholesale_cost) as s1 ,sum(ss_list_price) as s2 ,sum(ss_coupon_amt) as s3
> FROM store_sales
> JOIN store_returns ON store_sales.ss_item_sk = store_returns.sr_item_sk and store_sales.ss_ticket_number = store_returns.sr_ticket_number
> JOIN customer ON store_sales.ss_customer_sk = customer.c_customer_sk
> JOIN date_dim d1 ON store_sales.ss_sold_date_sk = d1.d_date_sk
> JOIN date_dim d2 ON customer.c_first_sales_date_sk = d2.d_date_sk
> JOIN date_dim d3 ON customer.c_first_shipto_date_sk = d3.d_date_sk
> JOIN store ON store_sales.ss_store_sk = store.s_store_sk
> JOIN customer_demographics cd1 ON store_sales.ss_cdemo_sk= cd1.cd_demo_sk
> JOIN customer_demographics cd2 ON customer.c_current_cdemo_sk = cd2.cd_demo_sk
> JOIN promotion ON store_sales.ss_promo_sk = promotion.p_promo_sk
> JOIN household_demographics hd1 ON store_sales.ss_hdemo_sk = hd1.hd_demo_sk
> JOIN household_demographics hd2 ON customer.c_current_hdemo_sk = hd2.hd_demo_sk
> JOIN customer_address ad1 ON store_sales.ss_addr_sk = ad1.ca_address_sk
> JOIN customer_address ad2 ON customer.c_current_addr_sk = ad2.ca_address_sk
> JOIN income_band ib1 ON hd1.hd_income_band_sk = ib1.ib_income_band_sk
> JOIN income_band ib2 ON hd2.hd_income_band_sk = ib2.ib_income_band_sk
> JOIN item ON store_sales.ss_item_sk = item.i_item_sk
> JOIN
> (select cs_item_sk
> ,sum(cs_ext_list_price) as sale,sum(cr_refunded_cash+cr_reversed_charge+cr_store_credit) as refund
> from catalog_sales JOIN catalog_returns
> ON catalog_sales.cs_item_sk = catalog_returns.cr_item_sk
> and catalog_sales.cs_order_number = catalog_returns.cr_order_number
> group by cs_item_sk
> having sum(cs_ext_list_price)>2*sum(cr_refunded_cash+cr_reversed_charge+cr_store_credit)) cs_ui
> ON store_sales.ss_item_sk = cs_ui.cs_item_sk
> WHERE
> cd1.cd_marital_status <> cd2.cd_marital_status and
> i_color in ('maroon','burnished','dim','steel','navajo','chocolate') and
> i_current_price between 35 and 35 + 10 and
> i_current_price between 35 + 1 and 35 + 15
> and ss_sold_date between '2001-01-01' and '2001-12-31'
> group by i_product_name ,i_item_sk ,s_store_name ,s_zip ,ad1.ca_street_number
> ,ad1.ca_street_name ,ad1.ca_city ,ad1.ca_zip ,ad2.ca_street_number
> ,ad2.ca_street_name ,ad2.ca_city ,ad2.ca_zip ,d1.d_year ,d2.d_year ,d3.d_year
> ) cs2
> ON cs1.item_sk=cs2.item_sk
> where
> cs1.syear = 2000 and
> cs2.syear = 2000 + 1 and
> cs2.cnt <= cs1.cnt and
> cs1.store_name = cs2.store_name and
> cs1.store_zip = cs2.store_zip
> order by cs1.product_name ,cs1.store_name ,cs2.cnt;
> {code}
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