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[opt](scanner) Control the degree of parallelism of scanner when only…
… limit involved (#39927) For queries like `select * from tbl limit 100;`, we should limit the parallelism to 1. We already have strategies in our code, but we can not control its behavior. So add session variables to control them. Previous pr like #33888 #36535 already has done something similar, this pr integrates them.
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175
regression-test/suites/query_profile/adaptive_pipeline_task_serial_read_on_limit.groovy
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| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you under the Apache License, Version 2.0 (the | ||
| // "License"); you may not use this file except in compliance | ||
| // with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
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| import groovy.json.JsonOutput | ||
| import groovy.json.JsonSlurper | ||
| import groovy.json.StringEscapeUtils | ||
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| def getProfileList = { | ||
| def dst = 'http://' + context.config.feHttpAddress | ||
| def conn = new URL(dst + "/rest/v1/query_profile").openConnection() | ||
| conn.setRequestMethod("GET") | ||
| def encoding = Base64.getEncoder().encodeToString((context.config.feHttpUser + ":" + | ||
| (context.config.feHttpPassword == null ? "" : context.config.feHttpPassword)).getBytes("UTF-8")) | ||
| conn.setRequestProperty("Authorization", "Basic ${encoding}") | ||
| return conn.getInputStream().getText() | ||
| } | ||
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| def getProfile = { id -> | ||
| def dst = 'http://' + context.config.feHttpAddress | ||
| def conn = new URL(dst + "/api/profile/text/?query_id=$id").openConnection() | ||
| conn.setRequestMethod("GET") | ||
| def encoding = Base64.getEncoder().encodeToString((context.config.feHttpUser + ":" + | ||
| (context.config.feHttpPassword == null ? "" : context.config.feHttpPassword)).getBytes("UTF-8")) | ||
| conn.setRequestProperty("Authorization", "Basic ${encoding}") | ||
| return conn.getInputStream().getText() | ||
| } | ||
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| suite('adaptive_pipeline_task_serial_read_on_limit') { | ||
| sql """ | ||
| DROP TABLE IF EXISTS adaptive_pipeline_task_serial_read_on_limit; | ||
| """ | ||
| sql """ | ||
| CREATE TABLE if not exists `adaptive_pipeline_task_serial_read_on_limit` ( | ||
| `id` INT, | ||
| `name` varchar(32) | ||
| ) ENGINE=OLAP | ||
| DISTRIBUTED BY HASH(`id`) BUCKETS 10 | ||
| PROPERTIES ( | ||
| "replication_allocation" = "tag.location.default: 1" | ||
| ); | ||
| """ | ||
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| // Insert data to table | ||
| sql """ | ||
| insert into adaptive_pipeline_task_serial_read_on_limit values | ||
| (1, "A"),(2, "B"),(3, "C"),(4, "D"),(5,"E"),(6,"F"),(7,"G"),(8,"H"),(9,"K"); | ||
| """ | ||
| sql """ | ||
| insert into adaptive_pipeline_task_serial_read_on_limit values | ||
| (10, "A"),(20, "B"),(30, "C"),(40, "D"),(50,"E"),(60,"F"),(70,"G"),(80,"H"),(90,"K"); | ||
| """ | ||
| sql """ | ||
| insert into adaptive_pipeline_task_serial_read_on_limit values | ||
| (101, "A"),(201, "B"),(301, "C"),(401, "D"),(501,"E"),(601,"F"),(701,"G"),(801,"H"),(901,"K"); | ||
| """ | ||
| sql """ | ||
| insert into adaptive_pipeline_task_serial_read_on_limit values | ||
| (1010, "A"),(2010, "B"),(3010, "C"),(4010, "D"),(5010,"E"),(6010,"F"),(7010,"G"),(8010,"H"),(9010,"K"); | ||
| """ | ||
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| def uuidString = UUID.randomUUID().toString() | ||
| sql "set enable_profile=true" | ||
| // set parallel_pipeline_task_num to 1 so that only one scan node, | ||
| // and we can check MaxScannerThreadNum in profile. | ||
| sql "set parallel_pipeline_task_num=1;" | ||
| // no limit, MaxScannerThreadNum = TabletNum | ||
| sql """ | ||
| select "no_limit_1_${uuidString}", * from adaptive_pipeline_task_serial_read_on_limit; | ||
| """ | ||
| sql "set parallel_pipeline_task_num=0;" | ||
| // With Limit, MaxScannerThreadNum = 1 | ||
| sql """ | ||
| select "with_limit_1_${uuidString}", * from adaptive_pipeline_task_serial_read_on_limit limit 10000; | ||
| """ | ||
| // With Limit, but bigger then adaptive_pipeline_task_serial_read_on_limit, MaxScannerThreadNum = TabletNum | ||
| sql """ | ||
| select "with_limit_2_${uuidString}", * from adaptive_pipeline_task_serial_read_on_limit limit 10001; | ||
| """ | ||
| sql """ | ||
| set enable_adaptive_pipeline_task_serial_read_on_limit=false; | ||
| """ | ||
| sql "set parallel_pipeline_task_num=1;" | ||
| // Forbid the strategy, with limit, MaxScannerThreadNum = TabletNum | ||
| sql """ | ||
| select "not_enable_limit_${uuidString}", * from adaptive_pipeline_task_serial_read_on_limit limit 100; | ||
| """ | ||
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| sql "set parallel_pipeline_task_num=0;" | ||
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| // Enable the strategy, with limit 20, MaxScannerThreadNum = 1 | ||
| sql """ | ||
| set enable_adaptive_pipeline_task_serial_read_on_limit=true; | ||
| """ | ||
| sql """ | ||
| set adaptive_pipeline_task_serial_read_on_limit=10; | ||
| """ | ||
| sql """ | ||
| select "modify_to_20_${uuidString}", * from adaptive_pipeline_task_serial_read_on_limit limit 15; | ||
| """ | ||
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| sql "set enable_profile=false" | ||
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| def wholeString = getProfileList() | ||
| List profileData = new JsonSlurper().parseText(wholeString).data.rows | ||
| String queryIdNoLimit1 = ""; | ||
| String queryIdWithLimit1 = ""; | ||
| String queryIdWithLimit2 = ""; | ||
| String queryIDNotEnableLimit = ""; | ||
| String queryIdModifyTo20 = ""; | ||
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| logger.info("{}", uuidString) | ||
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| for (def profileItem in profileData) { | ||
| if (profileItem["Sql Statement"].toString().contains("no_limit_1_${uuidString}")) { | ||
| queryIdNoLimit1 = profileItem["Profile ID"].toString() | ||
| logger.info("profileItem: {}", profileItem) | ||
| } | ||
| if (profileItem["Sql Statement"].toString().contains("with_limit_1_${uuidString}")) { | ||
| queryIdWithLimit1 = profileItem["Profile ID"].toString() | ||
| logger.info("profileItem: {}", profileItem) | ||
| } | ||
| if (profileItem["Sql Statement"].toString().contains("with_limit_2_${uuidString}")) { | ||
| queryIdWithLimit2 = profileItem["Profile ID"].toString() | ||
| logger.info("profileItem: {}", profileItem) | ||
| } | ||
| if (profileItem["Sql Statement"].toString().contains("not_enable_limit_${uuidString}")) { | ||
| queryIDNotEnableLimit = profileItem["Profile ID"].toString() | ||
| logger.info("profileItem: {}", profileItem) | ||
| } | ||
| if (profileItem["Sql Statement"].toString().contains("modify_to_20_${uuidString}")) { | ||
| queryIdModifyTo20 = profileItem["Profile ID"].toString() | ||
| logger.info("profileItem: {}", profileItem) | ||
| } | ||
| } | ||
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| logger.info("queryIdNoLimit1_${uuidString}: {}", queryIdNoLimit1) | ||
| logger.info("queryIdWithLimit1_${uuidString}: {}", queryIdWithLimit1) | ||
| logger.info("queryIdWithLimit2_${uuidString}: {}", queryIdWithLimit2) | ||
| logger.info("queryIDNotEnableLimit_${uuidString}: {}", queryIDNotEnableLimit) | ||
| logger.info("queryIdModifyTo20_${uuidString}: {}", queryIdModifyTo20) | ||
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| assertTrue(queryIdNoLimit1 != "") | ||
| assertTrue(queryIdWithLimit1 != "") | ||
| assertTrue(queryIdWithLimit2 != "") | ||
| assertTrue(queryIDNotEnableLimit != "") | ||
| assertTrue(queryIdModifyTo20 != "") | ||
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| def String profileNoLimit1 = getProfile(queryIdNoLimit1).toString() | ||
| def String profileWithLimit1 = getProfile(queryIdWithLimit1).toString() | ||
| def String profileWithLimit2 = getProfile(queryIdWithLimit2).toString() | ||
| def String profileNotEnableLimit = getProfile(queryIDNotEnableLimit).toString() | ||
| def String profileModifyTo20 = getProfile(queryIdModifyTo20).toString() | ||
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| assertTrue(profileNoLimit1.contains("- MaxScannerThreadNum: 10")) | ||
| assertTrue(profileWithLimit1.contains("- MaxScannerThreadNum: 1")) | ||
| assertTrue(profileWithLimit2.contains("- MaxScannerThreadNum: 10")) | ||
| assertTrue(profileNotEnableLimit.contains("- MaxScannerThreadNum: 10")) | ||
| assertTrue(profileModifyTo20.contains("- MaxScannerThreadNum: 1")) | ||
| } |