marising commented on a change in pull request #4330: URL: https://github.com/apache/incubator-doris/pull/4330#discussion_r472259742
########## File path: fe/fe-core/src/main/java/org/apache/doris/qe/cache/CacheAnalyzer.java ########## @@ -0,0 +1,450 @@ +// 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. + +package org.apache.doris.qe.cache; + +import org.apache.doris.analysis.AggregateInfo; +import org.apache.doris.analysis.BinaryPredicate; +import org.apache.doris.analysis.CastExpr; +import org.apache.doris.analysis.CompoundPredicate; +import org.apache.doris.analysis.Expr; +import org.apache.doris.analysis.InlineViewRef; +import org.apache.doris.analysis.QueryStmt; +import org.apache.doris.analysis.SelectStmt; +import org.apache.doris.analysis.SlotRef; +import org.apache.doris.analysis.StatementBase; +import org.apache.doris.analysis.TableRef; +import org.apache.doris.catalog.OlapTable; +import org.apache.doris.catalog.RangePartitionInfo; +import org.apache.doris.catalog.PartitionType; +import org.apache.doris.catalog.Partition; +import org.apache.doris.catalog.Column; +import org.apache.doris.common.util.DebugUtil; +import org.apache.doris.metric.MetricRepo; +import org.apache.doris.planner.OlapScanNode; +import org.apache.doris.planner.Planner; +import org.apache.doris.planner.ScanNode; +import org.apache.doris.qe.ConnectContext; +import org.apache.doris.qe.RowBatch; +import org.apache.doris.common.Config; +import org.apache.doris.common.Status; + +import com.google.common.collect.Lists; +import org.apache.doris.thrift.TUniqueId; +import org.apache.logging.log4j.LogManager; +import org.apache.logging.log4j.Logger; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * Analyze which caching mode a SQL is suitable for + * 1. T + 1 update is suitable for SQL mode + * 2. Partition by date, update the data of the day in near real time, which is suitable for Partition mode + */ +public class CacheAnalyzer { + private static final Logger LOG = LogManager.getLogger(CacheAnalyzer.class); + + /** + * NoNeed : disable config or variable, not query, not scan table etc. + */ + public enum CacheMode { + NoNeed, + None, + TTL, + Sql, + Partition + } + + private ConnectContext context; + private boolean enableSqlCache = false; + private boolean enablePartitionCache = false; + private TUniqueId queryId; + private CacheMode cacheMode; + private CacheTable latestTable; + private StatementBase parsedStmt; + private SelectStmt selectStmt; + private List<ScanNode> scanNodes; + private OlapTable olapTable; + private RangePartitionInfo partitionInfo; + private Column partColumn; + private CompoundPredicate partitionPredicate; + private Cache cache; + + public Cache getCache() { + return cache; + } + + public CacheAnalyzer(ConnectContext context, StatementBase parsedStmt, Planner planner) { + this.context = context; + this.queryId = context.queryId(); + this.parsedStmt = parsedStmt; + scanNodes = planner.getScanNodes(); + latestTable = new CacheTable(); + checkCacheConfig(); + } + + //for unit test + public CacheAnalyzer(ConnectContext context, StatementBase parsedStmt, List<ScanNode> scanNodes) { + this.context = context; + this.parsedStmt = parsedStmt; + this.scanNodes = scanNodes; + checkCacheConfig(); + } + + private void checkCacheConfig() { + if (Config.cache_enable_sql_mode) { + if (context.getSessionVariable().isEnableSqlCache()) { Review comment: I understand that getsessionvariable() can obtain session variables and global variables. Session variables have higher priority than global variables. I don't know if I understand correctly. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
