/
Planner.java
1714 lines (1538 loc) · 80.8 KB
/
Planner.java
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/*
* Copyright [2013-2021], Alibaba Group Holding Limited
*
* Licensed 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 com.alibaba.polardbx.optimizer.core.planner;
import com.alibaba.polardbx.common.TddlNode;
import com.alibaba.polardbx.common.charset.CharsetName;
import com.alibaba.polardbx.common.constants.CpuStatAttribute;
import com.alibaba.polardbx.common.constants.IsolationLevel;
import com.alibaba.polardbx.common.constants.SequenceAttribute;
import com.alibaba.polardbx.common.constants.ServerVariables;
import com.alibaba.polardbx.common.exception.NotSupportException;
import com.alibaba.polardbx.common.exception.TddlNestableRuntimeException;
import com.alibaba.polardbx.common.jdbc.ParameterContext;
import com.alibaba.polardbx.common.jdbc.Parameters;
import com.alibaba.polardbx.common.model.SqlType;
import com.alibaba.polardbx.common.model.hint.ExtraCmdRouteCondition;
import com.alibaba.polardbx.common.model.hint.RouteCondition;
import com.alibaba.polardbx.common.properties.ConnectionParams;
import com.alibaba.polardbx.common.properties.ConnectionProperties;
import com.alibaba.polardbx.common.properties.MetricLevel;
import com.alibaba.polardbx.common.properties.ParamManager;
import com.alibaba.polardbx.common.utils.GeneralUtil;
import com.alibaba.polardbx.common.utils.Pair;
import com.alibaba.polardbx.common.utils.TStringUtil;
import com.alibaba.polardbx.common.utils.logger.Logger;
import com.alibaba.polardbx.common.utils.logger.LoggerFactory;
import com.alibaba.polardbx.common.utils.thread.ThreadCpuStatUtil;
import com.alibaba.polardbx.config.ConfigDataMode;
import com.alibaba.polardbx.druid.sql.SQLUtils;
import com.alibaba.polardbx.druid.sql.ast.SQLCommentHint;
import com.alibaba.polardbx.druid.sql.ast.SQLStatement;
import com.alibaba.polardbx.druid.sql.dialect.mysql.ast.statement.MySqlCreateTableStatement;
import com.alibaba.polardbx.druid.sql.dialect.mysql.ast.statement.MySqlExplainStatement;
import com.alibaba.polardbx.druid.sql.dialect.mysql.parser.MySqlLexer;
import com.alibaba.polardbx.druid.sql.parser.ByteString;
import com.alibaba.polardbx.druid.sql.parser.Token;
import com.alibaba.polardbx.druid.util.JdbcConstants;
import com.alibaba.polardbx.gms.config.impl.MetaDbInstConfigManager;
import com.alibaba.polardbx.gms.config.impl.MetaDbVariableConfigManager;
import com.alibaba.polardbx.gms.locality.PrimaryZoneInfo;
import com.alibaba.polardbx.gms.topology.DbInfoManager;
import com.alibaba.polardbx.optimizer.OptimizerContext;
import com.alibaba.polardbx.optimizer.PlannerContext;
import com.alibaba.polardbx.optimizer.config.meta.DrdsRelMetadataProvider;
import com.alibaba.polardbx.optimizer.config.table.Field;
import com.alibaba.polardbx.optimizer.config.table.TableMeta;
import com.alibaba.polardbx.optimizer.context.ExecutionContext;
import com.alibaba.polardbx.optimizer.core.CursorMeta;
import com.alibaba.polardbx.optimizer.core.DrdsConvention;
import com.alibaba.polardbx.optimizer.core.MppConvention;
import com.alibaba.polardbx.optimizer.core.datatype.DateTimeType;
import com.alibaba.polardbx.optimizer.core.function.calc.scalar.datatime.Now;
import com.alibaba.polardbx.optimizer.core.planner.Xplanner.RelToXPlanConverter;
import com.alibaba.polardbx.optimizer.core.planner.Xplanner.RelXPlanOptimizer;
import com.alibaba.polardbx.optimizer.core.planner.rule.CBOLogicalSemiJoinLogicalJoinTransposeRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.CBOPushJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.CBOPushSemiJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsAggregateJoinTransposeRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsCorrelateConvertRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsFilterConvertRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsLogicalViewConvertRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsOutFileConvertRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsProjectConvertRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsSortConvertRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsSortJoinTransposeRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.DrdsSortProjectTransposeRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalAggToHashAggRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalAggToSortAggRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalJoinToBKAJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalJoinToHashJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalJoinToNLJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalJoinToSortMergeJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalSemiJoinToMaterializedSemiJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalSemiJoinToSemiHashJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalSemiJoinToSemiNLJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.LogicalSemiJoinToSemiSortMergeJoinRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.OptimizeLogicalViewRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.OuterJoinAssocRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.OuterJoinLAsscomRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.ProjectSortTransitiveRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.PushFilterRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.PushProjectRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.PushSortRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.RuleToUse;
import com.alibaba.polardbx.optimizer.core.planner.rule.SQL_REWRITE_RULE_PHASE;
import com.alibaba.polardbx.optimizer.core.planner.rule.SemiJoinSemiJoinTransposeRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.mpp.runtimefilter.PushBloomFilterRule;
import com.alibaba.polardbx.optimizer.core.planner.rule.util.CheapestFractionalPlanReplacer;
import com.alibaba.polardbx.optimizer.core.planner.rule.util.SubQueryPlanEnumerator;
import com.alibaba.polardbx.optimizer.core.profiler.RuntimeStat;
import com.alibaba.polardbx.optimizer.core.rel.BroadcastTableModify;
import com.alibaba.polardbx.optimizer.core.rel.CollectorTableVisitor;
import com.alibaba.polardbx.optimizer.core.rel.CountVisitor;
import com.alibaba.polardbx.optimizer.core.rel.DirectTableOperation;
import com.alibaba.polardbx.optimizer.core.rel.LogicalInsert;
import com.alibaba.polardbx.optimizer.core.rel.LogicalModify;
import com.alibaba.polardbx.optimizer.core.rel.LogicalModifyView;
import com.alibaba.polardbx.optimizer.core.rel.LogicalView;
import com.alibaba.polardbx.optimizer.core.rel.RemoveSchemaNameVisitor;
import com.alibaba.polardbx.optimizer.core.rel.ReplaceLogicalTableNameWithPhysicalTableNameVisitor;
import com.alibaba.polardbx.optimizer.core.rel.ToDrdsRelVisitor;
import com.alibaba.polardbx.optimizer.core.rel.UserHintPassThroughVisitor;
import com.alibaba.polardbx.optimizer.hint.HintPlanner;
import com.alibaba.polardbx.optimizer.hint.operator.HintCmdOperator;
import com.alibaba.polardbx.optimizer.hint.util.HintConverter;
import com.alibaba.polardbx.optimizer.hint.util.HintUtil;
import com.alibaba.polardbx.optimizer.locality.LocalityManager;
import com.alibaba.polardbx.optimizer.msha.TddlMshaProcessor;
import com.alibaba.polardbx.optimizer.parse.FastsqlParser;
import com.alibaba.polardbx.optimizer.parse.HintParser;
import com.alibaba.polardbx.optimizer.parse.SqlParameterizeUtils;
import com.alibaba.polardbx.optimizer.parse.SqlTypeParser;
import com.alibaba.polardbx.optimizer.parse.SqlTypeUtils;
import com.alibaba.polardbx.optimizer.parse.bean.SqlParameterized;
import com.alibaba.polardbx.optimizer.parse.hint.SimpleHintParser;
import com.alibaba.polardbx.optimizer.parse.visitor.DrdsParameterizeSqlVisitor;
import com.alibaba.polardbx.optimizer.planmanager.PlanManager;
import com.alibaba.polardbx.optimizer.partition.PartitionInfo;
import com.alibaba.polardbx.optimizer.planmanager.PlanManagerUtil;
import com.alibaba.polardbx.optimizer.planmanager.PreparedStmtCache;
import com.alibaba.polardbx.optimizer.planmanager.parametric.MyParametricQueryAdvisor;
import com.alibaba.polardbx.optimizer.rule.TddlRuleManager;
import com.alibaba.polardbx.optimizer.sequence.SequenceManagerProxy;
import com.alibaba.polardbx.optimizer.sharding.ConditionExtractor;
import com.alibaba.polardbx.optimizer.sharding.result.ExtractionResult;
import com.alibaba.polardbx.optimizer.sharding.result.PlanShardInfo;
import com.alibaba.polardbx.optimizer.utils.CalciteUtils;
import com.alibaba.polardbx.optimizer.utils.CheckModifyLimitation;
import com.alibaba.polardbx.optimizer.utils.ExecutionPlanProperties;
import com.alibaba.polardbx.optimizer.utils.ExplainResult;
import com.alibaba.polardbx.optimizer.utils.MetaUtils;
import com.alibaba.polardbx.optimizer.utils.OptimizerUtils;
import com.alibaba.polardbx.optimizer.utils.PlannerUtils;
import com.alibaba.polardbx.optimizer.utils.RelUtils;
import com.alibaba.polardbx.optimizer.utils.mppchecker.MppPlanCheckers;
import com.alibaba.polardbx.optimizer.variable.VariableManager;
import com.alibaba.polardbx.optimizer.view.VirtualView;
import com.alibaba.polardbx.optimizer.workload.WorkloadType;
import com.alibaba.polardbx.rule.TableRule;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import org.apache.calcite.plan.RelOptCluster;
import org.apache.calcite.plan.RelOptPlanner;
import org.apache.calcite.plan.RelOptRule;
import org.apache.calcite.plan.RelOptUtil;
import org.apache.calcite.plan.RelTraitSet;
import org.apache.calcite.plan.hep.HepMatchOrder;
import org.apache.calcite.plan.hep.HepPlanner;
import org.apache.calcite.plan.hep.HepProgramBuilder;
import org.apache.calcite.plan.volcano.VolcanoPlanner;
import org.apache.calcite.rel.RelNode;
import org.apache.calcite.rel.SingleRel;
import org.apache.calcite.rel.core.TableModify;
import org.apache.calcite.rel.logical.LogicalOutFile;
import org.apache.calcite.rel.logical.LogicalTableScan;
import org.apache.calcite.rel.metadata.JaninoRelMetadataProvider;
import org.apache.calcite.rel.metadata.RelMetadataQuery;
import org.apache.calcite.rel.rules.ProjectMergeRule;
import org.apache.calcite.rel.rules.ProjectRemoveRule;
import org.apache.calcite.rel.rules.SemiJoinProjectTransposeRule;
import org.apache.calcite.rel.type.RelDataType;
import org.apache.calcite.rex.RexNode;
import org.apache.calcite.sql.SqlBasicCall;
import org.apache.calcite.sql.SqlCall;
import org.apache.calcite.sql.SqlDelete;
import org.apache.calcite.sql.SqlDynamicParam;
import org.apache.calcite.sql.SqlExplain;
import org.apache.calcite.sql.SqlFunctionCategory;
import org.apache.calcite.sql.SqlIdentifier;
import org.apache.calcite.sql.SqlInsert;
import org.apache.calcite.sql.SqlKind;
import org.apache.calcite.sql.SqlLiteral;
import org.apache.calcite.sql.SqlNode;
import org.apache.calcite.sql.SqlNodeList;
import org.apache.calcite.sql.SqlSelect;
import org.apache.calcite.sql.SqlUnresolvedFunction;
import org.apache.calcite.sql.SqlUpdate;
import org.apache.calcite.sql.TDDLSqlSelect;
import org.apache.calcite.sql.parser.SqlParserPos;
import org.apache.calcite.sql.type.SqlTypeName;
import org.apache.calcite.sql.util.SqlBasicVisitor;
import org.apache.calcite.util.NlsString;
import org.apache.calcite.util.Util;
import org.apache.calcite.util.trace.CalcitePlanOptimizerTrace;
import org.apache.commons.lang.StringUtils;
import java.lang.reflect.InvocationTargetException;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import static com.alibaba.polardbx.optimizer.planmanager.PlanManagerUtil.getRexNodeTableMap;
import static com.alibaba.polardbx.optimizer.utils.ExplainResult.isExplainAdvisor;
import static com.alibaba.polardbx.optimizer.utils.ExplainResult.isExplainOptimizer;
import static com.alibaba.polardbx.optimizer.utils.RelUtils.disableMpp;
import static com.alibaba.polardbx.optimizer.workload.WorkloadUtil.determineWorkloadType;
import static org.apache.calcite.sql.SqlKind.DDL;
import static org.apache.calcite.sql.SqlKind.DML;
import static org.apache.calcite.sql.SqlKind.QUERY;
/**
* @author lingce.ldm 2017-07-07 14:44
*/
public class Planner {
private static final Planner INSTANCE = new Planner();
private final Logger logger = LoggerFactory.getLogger(getClass());
public Planner() {
}
public static Planner getInstance() {
return INSTANCE;
}
public ExecutionPlan plan(String sql, ExecutionContext executionContext) {
return plan(ByteString.from(sql), executionContext);
}
public ExecutionPlan planForPrepare(ByteString sql,
SqlNodeList sqlNodeList,
PreparedStmtCache preparedStmtCache,
ExecutionContext executionContext) {
ByteString afterProcessSql = removeSpecialHint(sql, executionContext);
SqlParameterized parameterized = parameterize(afterProcessSql, executionContext, true);
SqlType sqlType = SqlTypeParser.typeOf(parameterized.getSql());
preparedStmtCache.setSqlParameterized(parameterized);
preparedStmtCache.setSqlType(sqlType);
return plan(sql, sqlType, parameterized, executionContext, sqlNodeList, true);
}
public ExecutionPlan plan(ByteString sql, ExecutionContext executionContext) {
if (executionContext.isExecutingPreparedStmt()) {
PreparedStmtCache preparedStmtCache = executionContext.getPreparedStmtCache();
assert preparedStmtCache != null;
ByteString afterProcessSql = removeSpecialHint(sql, executionContext);
SqlParameterized parameterized = parameterize(afterProcessSql, executionContext);
return plan(sql, preparedStmtCache.getSqlType(), parameterized, executionContext);
} else {
ByteString afterProcessSql = removeSpecialHint(sql, executionContext);
SqlParameterized parameterized = parameterize(afterProcessSql, executionContext);
SqlType sqlType = SqlTypeParser.typeOf(parameterized.getSql());
return plan(sql, sqlType, parameterized, executionContext);
}
}
private ExecutionPlan plan(ByteString sql, SqlType sqlType, SqlParameterized parameterized,
ExecutionContext executionContext) {
return plan(sql, sqlType, parameterized, executionContext, null, false);
}
/**
* Sql to ExecutionPlan
*/
private ExecutionPlan plan(ByteString sql, SqlType sqlType,
SqlParameterized parameterized, ExecutionContext executionContext,
SqlNodeList sqlNodeList,
boolean forPrepare) {
executionContext.setOriginSql(sql.toString());
// metaquery init
RelMetadataQuery.THREAD_PROVIDERS.set(JaninoRelMetadataProvider.of(DrdsRelMetadataProvider.INSTANCE));
// prepare statement with parameters
Parameters parameters = executionContext.getParams();
if (parameters == null) {
executionContext.setParams(new Parameters());
}
if (parameterized == null) {
return null;
}
final SQLStatement statement = parameterized.getStmt();
if (statement instanceof MySqlExplainStatement && !(((MySqlExplainStatement) statement).isDescribe())) {
parameterized = handleExplain(sql, (MySqlExplainStatement) statement, executionContext);
}
return doPlan(sqlType, parameterized, executionContext, sqlNodeList, forPrepare);
}
private SqlParameterized parameterize(ByteString afterProcessSql,
ExecutionContext executionContext) {
return parameterize(afterProcessSql, executionContext, false);
}
private SqlParameterized parameterize(ByteString afterProcessSql,
ExecutionContext executionContext,
boolean forPrepare) {
boolean enableSqlCpu = false;
if (executionContext != null) {
enableSqlCpu = MetricLevel.isSQLMetricEnabled(
executionContext.getParamManager().getInt(ConnectionParams.MPP_METRIC_LEVEL)) &&
executionContext.getRuntimeStatistics() != null;
}
Map<Integer, ParameterContext> currentParameter = executionContext.getParams().getCurrentParameter();
long startParameterize = 0L;
if (enableSqlCpu) {
startParameterize = ThreadCpuStatUtil.getThreadCpuTimeNano();
}
SqlParameterized result =
SqlParameterizeUtils.parameterize(afterProcessSql, currentParameter, executionContext, forPrepare);
if (enableSqlCpu) {
executionContext.getRuntimeStatistics()
.getCpuStat()
.addCpuStatItem(CpuStatAttribute.CpuStatAttr.PARAMETERIZE_SQL,
ThreadCpuStatUtil.getThreadCpuTimeNano() - startParameterize);
}
return result;
}
private SqlParameterized handleExplain(ByteString sql, MySqlExplainStatement sqlExplain,
ExecutionContext executionContext) {
// process explain
ExplainResult result = new ExplainResult();
result.explainMode = ExplainResult.ExplainMode.DETAIL;
for (ExplainResult.ExplainMode mode : ExplainResult.ExplainMode.values()) {
if (mode.name().equalsIgnoreCase(sqlExplain.getType())) {
result.explainMode = mode;
break;
}
}
if (isExplainOptimizer(result)) {
CalcitePlanOptimizerTrace.setOpen(true);
}
List<SQLCommentHint> oriHints = sqlExplain.getHints();
if (null == oriHints) {
oriHints = sqlExplain.getHeadHintsDirect();
}
//inherit the hint from explain statement
if (null != oriHints && oriHints.size() != 0) {
sqlExplain.getStatement().setHeadHints(oriHints);
}
executionContext.setExplain(result);
//parameterized sql without explain keyword
Map<Integer, ParameterContext> parameters = executionContext.getParams().getCurrentParameter();
ByteString explainedQuery = getQueryAfterExplain(sql);
return SqlParameterizeUtils
.parameterize(explainedQuery, sqlExplain.getStatement(), parameters, executionContext, false);
}
private static ByteString getQueryAfterExplain(ByteString explainQuery) {
MySqlLexer lexer = new MySqlLexer(explainQuery);
while (true) {
lexer.nextToken();
if (lexer.token() == Token.EXPLAIN) {
lexer.nextToken(); // Move to next token after EXPLAIN
return explainQuery.slice(lexer.getStartPos());
}
}
}
/**
* build plan for parameterized sql (no plan cache)
*/
public ExecutionPlan doBuildPlan(SqlNodeList astList,
ExecutionContext executionContext) {
SqlNode ast = astList.get(0);
Set<Pair<String, String>> tableSet = PlanManagerUtil.getTableSetFromAst(ast);
// process special query
SqlNode afterProcessAst = processSpecialQuery(ast, executionContext);
if (ast.getKind().belongsTo(SqlKind.DML)) {
tableSet = PlanManagerUtil.getTableSetFromAst(ast);
}
ExecutionPlan plan;
if (executionContext.isUseHint()) {
// handle plan hint first
plan = buildPlanWithHint(afterProcessAst, executionContext);
} else {
PlannerContext plannerContext = PlannerContext.fromExecutionContext(executionContext);
plan = getPlan(afterProcessAst, plannerContext);
plan.setExplain(executionContext.getExplain() != null);
plan.setUsePostPlanner(
PostPlanner.usePostPlanner(executionContext.getExplain(), executionContext.isUseHint()));
}
Map<String, TableMeta> tableMetas = PlanManagerUtil.getTableMetaSetByTableSet(tableSet, executionContext);
plan.saveCacheState(tableSet, 0, null, tableMetas);
return plan;
}
/**
* build plan for parameterized sql (no plan cache)
*/
public ExecutionPlan doBuildPlan(SqlParameterized sqlParameterized, ExecutionContext executionContext) {
// parse
SqlNodeList astList;
if (executionContext.getParamManager().getBoolean(ConnectionParams.ENABLE_PARAMETER_PLAN)) {
astList = new FastsqlParser()
.parse(sqlParameterized.getSql(), sqlParameterized.getParameters(), executionContext);
} else {
astList = new FastsqlParser().parse(sqlParameterized.getOriginSql(), executionContext);
}
return doBuildPlan(astList, executionContext);
}
public static void processParameter(List<Object> p, ExecutionContext executionContext) {
// fill the userDefVariable & sysDefVariable
if (p != null) {
// record nlsString in parameters
Map<Integer, NlsString> nlsStringMap = IntStream.range(0, p.size())
.filter(i -> p.get(i) instanceof NlsString)
.boxed()
.collect(
Collectors.toMap(i -> i, i -> (NlsString) p.get(i))
);
executionContext.setParameterNlsStrings(nlsStringMap);
VariableManager variableManager =
OptimizerContext.getContext(executionContext.getSchemaName()).getVariableManager();
for (int i = 0; i < p.size(); i++) {
if (p.get(i) instanceof DrdsParameterizeSqlVisitor.UserDefVariable) {
DrdsParameterizeSqlVisitor.UserDefVariable userDefVariable =
(DrdsParameterizeSqlVisitor.UserDefVariable) p.get(i);
Map<String, Object> userDefVariables = executionContext.getUserDefVariables();
p.set(i, userDefVariables.get(userDefVariable.getName().toLowerCase()));
} else if (p.get(i) instanceof DrdsParameterizeSqlVisitor.SysDefVariable) {
DrdsParameterizeSqlVisitor.SysDefVariable sysDefVariable =
(DrdsParameterizeSqlVisitor.SysDefVariable) p.get(i);
String name = StringUtils.strip(sysDefVariable.getName().toLowerCase(), "`");
if ("last_insert_id".equals(name)) {
p.set(i, executionContext.getConnection().getLastInsertId());
} else if ("tx_isolation".equals(name) || "transaction_isolation".equals(name)) {
// Note: It's hard to get global isolation level here...
IsolationLevel isolation = IsolationLevel.fromInt(executionContext.getTxIsolation());
p.set(i, isolation != null ? isolation.nameWithHyphen() : null);
} else if ("compute_node".equals(name)) {
p.set(i, TddlNode.getHost() + ":" + TddlNode.getPort());
} else if ("primary_zone".equals(name)) {
PrimaryZoneInfo primaryZoneInfo = LocalityManager.getInstance().getSystemPrimaryZone();
p.set(i, primaryZoneInfo.serialize());
} else if ("read_only".equals(name)) {
if (ConfigDataMode.isMasterMode()) {
p.set(i, 0);
} else if (ConfigDataMode.isSlaveMode()) {
p.set(i, 1);
}
} else if ("auto_increment_increment".equalsIgnoreCase(name) && !SequenceManagerProxy.getInstance()
.areAllSequencesSameType(executionContext.getSchemaName(), SequenceAttribute.Type.SIMPLE)) {
// Since the steps of Group and Time-based Sequence are fixed to 1,
// so we have to override auto_increment_increment set on RDS for
// correct behavior of generated keys, unless all sequence types
// are SIMPLE which allows custom step/increment.
p.set(i, 1);
} else {
if (!ServerVariables.contains(name) && !ServerVariables.isExtra(name)) {
throw new TddlNestableRuntimeException("Unknown system variable " + name);
}
Object v;
if (sysDefVariable.isGlobal()) {
v = variableManager.getGlobalVariable(name);
Properties cnProperties =
MetaDbInstConfigManager.getInstance().getCnVariableConfigMap();
Properties dnProperties =
MetaDbVariableConfigManager.getInstance().getDnVariableConfigMap();
if (cnProperties.containsKey(name)) {
v = cnProperties.getProperty(name);
} else if (dnProperties.containsKey(name)) {
v = dnProperties.getProperty(name);
}
} else {
if (executionContext.getExtraServerVariables().containsKey(name)) {
v = executionContext.getExtraServerVariables().get(name);
} else {
v = executionContext.getServerVariables().get(name);
}
if (v == null) {
v = variableManager.getSessionVariable(name);
}
}
// IMPORTANT!
if ("sql_mode".equals(name) && v instanceof String && "default".equalsIgnoreCase((String) v)) {
v = variableManager.getGlobalVariable(name);
}
if (v != null && v instanceof String && TStringUtil.isParsableNumber((String) v)) {
Number number;
try {
number = NumberFormat.getInstance().parse((String) v);
} catch (ParseException e) {
number = null;
}
if (number != null) {
v = number;
}
}
if (v instanceof String && !("query_cache_type".equals(name) || "gtid_mode".equals(
name))) {
if ("NULL".equalsIgnoreCase((String) v)) {
v = "";
} else if ("OFF".equalsIgnoreCase((String) v)) {
v = 0;
} else if ("ON".equalsIgnoreCase((String) v)) {
v = 1;
}
}
if (v instanceof Boolean) {
if (((Boolean) v) == true) {
v = 1;
} else if (((Boolean) v) == false) {
v = 0;
}
}
if (v == null) {
v = "";
}
p.set(i, v);
}
} else if (p.get(i) instanceof DrdsParameterizeSqlVisitor.ConstantVariable) {
DrdsParameterizeSqlVisitor.ConstantVariable constantVariable =
(DrdsParameterizeSqlVisitor.ConstantVariable) p.get(i);
String name = StringUtils.strip(constantVariable.getName().toLowerCase(), "`");
if ("now".equals(name)) {
Now now = null;
if (constantVariable.getArgs().length != 0) {
now = new Now(null, (new DateTimeType((Integer) constantVariable.getArgs()[0])));
p.set(i, new DateTimeType((Integer) constantVariable.getArgs()[0])
.convertFrom(executionContext.getConstantValue(name, now, new Object[] {6})));
} else {
now = new Now(null, new DateTimeType());
p.set(i, new DateTimeType()
.convertFrom(executionContext.getConstantValue(name, now, new Object[] {6})));
}
}
} else if (p.get(i) instanceof NlsString) {
// reduce nlsString to Java String
NlsString nlsString = (NlsString) p.get(i);
if (CharsetName.of(nlsString.getCharsetName()) != CharsetName.BINARY) {
p.set(i, nlsString.getValue());
} else {
p.set(i, nlsString.getValue().getBytes(StandardCharsets.ISO_8859_1));
}
}
}
}
Parameters parameters = executionContext.getParams();
parameters.setParams(OptimizerUtils.buildParam(p));
}
/**
* parse and remove simple hint
*/
private ByteString removeSpecialHint(ByteString sql, ExecutionContext context) {
// SQL的HINT采用老式写法，如 /*+TDDL({'extra':{'SOCKET_TIMEOUT':'0'}})*/
int hintCount = HintParser.getInstance().getAllHintCount(sql);
if (hintCount == 0) {
return sql;
}
Map<String, Object> extraCmds = new HashMap<String, Object>();
ByteString newSql = HintUtil.convertSimpleHint(sql, extraCmds);
if (extraCmds.size() > 0) {
context.getExtraCmds().putAll(extraCmds);
}
String newHint = HintParser.getInstance().getTddlHint(newSql);
RouteCondition rc = SimpleHintParser.convertHintStrToCondition(context.getSchemaName(), newHint, false);
if (null != rc) {
extraCmds = rc.getExtraCmds();
if (extraCmds.size() > 0) {
context.getExtraCmds().putAll(extraCmds);
}
}
String mshaHint = HintParser.getInstance().getTddlMshaHint(newSql);
if (!StringUtils.isEmpty(mshaHint)) {
RouteCondition rcOfMsha =
SimpleHintParser.convertHintStrToCondition(context.getSchemaName(), mshaHint, false);
if (null != rcOfMsha) {
extraCmds = rcOfMsha.getExtraCmds();
if (extraCmds.size() > 0) {
context.getExtraCmds().putAll(extraCmds);
}
}
}
if (extraCmds.containsKey(ConnectionProperties.COLLECT_SQL_ERROR_INFO)
|| extraCmds.containsKey(ConnectionProperties.RETRY_ERROR_SQL_ON_OLD_SERVER)
|| extraCmds.containsKey(ConnectionProperties.SCALE_OUT_WRITE_DEBUG)) {
if (rc != null && !(rc instanceof ExtraCmdRouteCondition)) {
throw new NotSupportException("routing hint");
}
newSql = HintParser.getInstance().getSqlRemovedHintStr(sql);
}
return newSql;
}
private void processMsah(SqlParameterized sqlParameterized, ExecutionContext executionContext) {
try {
TddlMshaProcessor.processMsahHint(sqlParameterized.isDML(),
sqlParameterized.isUpdateDelete(),
executionContext.getExtraCmds());
} catch (Exception e) {
throw GeneralUtil.nestedException(e);
}
}
private SqlNodeList buildDirectHint(String schemaName, ExecutionContext executionContext) {
// Build direct hint with defaultDbIndex
List<SqlNode> hints = new ArrayList<>();
List<SqlNode> funcs = new ArrayList<>();
List<SqlNode> group = new ArrayList<>();
SqlNode[] args = new SqlNode[1];
String defaultDbIndex = OptimizerContext.getContext(schemaName).getRuleManager().getDefaultDbIndex(null);
args[0] = SqlLiteral.createCharString(defaultDbIndex, SqlParserPos.ZERO);
SqlNode func = new SqlBasicCall(new SqlUnresolvedFunction(new SqlIdentifier("node", SqlParserPos.ZERO),
null,
null,
null,
null,
SqlFunctionCategory.USER_DEFINED_FUNCTION), args, SqlParserPos.ZERO);
group.add(func);
funcs.add(new SqlNodeList(group, SqlParserPos.ZERO));
hints.add(new SqlNodeList(funcs, SqlParserPos.ZERO));
// Using hint
executionContext.setUseHint(true);
return new SqlNodeList(hints, SqlParserPos.ZERO);
}
private ExecutionPlan buildPlanWithHint(SqlNode ast, ExecutionContext ec) {
final Map<Integer, ParameterContext> param = ec.getParams().getCurrentParameter();
ExplainResult explain = ec.getExplain();
boolean isExplain = explain != null;
ExecutionPlan executionPlan;
// init HINT
final HintPlanner hintPlanner = HintPlanner.getInstance(ec.getSchemaName(), ec);
final HintCmdOperator.CmdBean cmdBean = new HintCmdOperator.CmdBean(ec.getSchemaName(), new HashMap<>(),
ec.getGroupHint());
HintConverter.HintCollection hintCollection =
hintPlanner.collectAndPreExecute(ast, cmdBean, ec.isTestMode(), ec);
if (!hintCollection.errorMessages.isEmpty()) {
hintCollection.errorMessages.stream()
.map(text -> new ExecutionContext.ErrorMessage(0, "", text))
.forEach(e -> ec.addMessage(ExecutionContext.FailedMessage, e));
}
ec.setGroupHint(cmdBean.getGroupHint().toString());
ec.putAllHintCmds(cmdBean.getExtraCmd());
cmdBean.setExtraCmd(ec.getExtraCmds());
ec.setOriginSqlPushdownOrRoute(hintCollection.pushdownSqlOrRoute());
PlannerContext plannerContext = PlannerContext.fromExecutionContext(ec);
if (cmdBean.isScan()) {
//force close mpp.
disableMpp(ec);
}
if (hintCollection.pushdownOriginSql()) {
executionPlan = hintPlanner.direct(ast, cmdBean, hintCollection, param, ec.getSchemaName(), ec);
} else if (hintCollection.cmdOnly() || hintCollection.errorMessages.size() > 0) {
//FIXME here task the illegal hint as the cmd hint.
if (ast instanceof SqlExplain) {
executionPlan = hintPlanner.pushdown(getPlan(((SqlExplain) ast).getExplicandum(), plannerContext),
ast,
cmdBean,
hintCollection,
param,
ec.getExtraCmds(), ec);
} else {
if (hintCollection.hasPlanHint() && cmdBean.getExtraCmd().get(ConnectionProperties.PLAN) != null) {
String externalizePlan = cmdBean.getExtraCmd().get(ConnectionProperties.PLAN).toString();
plannerContext.setExternalizePlan(externalizePlan);
executionPlan = getPlan(ast, plannerContext);
plannerContext.setExternalizePlan(null);
} else {
executionPlan = hintPlanner.pushdown(getPlan(ast, plannerContext),
ast,
cmdBean,
hintCollection,
param,
ec.getExtraCmds(), ec);
}
}
} else {
if (hintCollection.hasPlanHint() && cmdBean.getExtraCmd().get(ConnectionProperties.PLAN) != null) {
String externalizePlan = cmdBean.getExtraCmd().get(ConnectionProperties.PLAN).toString();
plannerContext.setExternalizePlan(externalizePlan);
executionPlan = getPlan(ast, plannerContext);
plannerContext.setExternalizePlan(null);
} else {
executionPlan = hintPlanner.getPlan(ast, plannerContext, plannerContext.getExecutionContext());
}
}
executionPlan.setExplain(isExplain);
executionPlan.setUsePostPlanner(
PostPlanner.usePostPlanner(explain, ec.isUseHint()) || hintCollection.usePostPlanner());
return executionPlan;
}
/**
* deal with some specialQuery (need parse sql)
* 1. system variable query
*/
private SqlNode processSpecialQuery(SqlNode ast, ExecutionContext executionContext) {
if (executionContext.getSqlType() == SqlType.GET_INFORMATION_SCHEMA && ast instanceof TDDLSqlSelect) {
boolean enableLogicalInfoSchemaQuery =
executionContext.getParamManager().getBoolean(ConnectionParams.ENABLE_LOGICAL_INFO_SCHEMA_QUERY);
if (!enableLogicalInfoSchemaQuery) {
TDDLSqlSelect selectSystemVariableAst = (TDDLSqlSelect) ast;
selectSystemVariableAst.setHints(buildDirectHint(executionContext.getSchemaName(), executionContext));
}
}
if (executionContext.getLoadDataContext() != null) {
Preconditions.checkArgument(ast instanceof SqlInsert);
//Replace the SqlDynamicParam's type for load data.
List<SqlTypeName> typeNames = executionContext.getLoadDataContext().getValueTypes();
SqlBasicVisitor<SqlNode> sqlShuttle = new SqlBasicVisitor<SqlNode>() {
@Override
public SqlCall visit(SqlCall call) {
for (int i = 0; i < call.operandCount(); i++) {
if (call.getOperandList().get(i) == null) {
continue;
}
SqlNode sqlNode = call.getOperandList().get(i).accept(this);
if (sqlNode != null) {
call.setOperand(i, sqlNode);
}
}
return call;
}
@Override
public SqlNode visit(SqlDynamicParam param) {
SqlDynamicParam newDynamicParam = new SqlDynamicParam(
param.getIndex(), typeNames.get(param.getIndex()), param.getParserPosition());
return newDynamicParam;
}
};
ast = ast.accept(sqlShuttle);
}
return ast;
}
public ExecutionPlan getPlan(SqlNode ast) {
return getPlan(ast, new PlannerContext());
}
public ExecutionPlan getPlan(SqlNode ast, PlannerContext plannerContext) {
plannerContext.setSqlKind(ast.getKind());
// disable direct plan for CTE
if (ast.getKind() == SqlKind.WITH) {
plannerContext.getExtraCmds().put(ConnectionProperties.ENABLE_DIRECT_PLAN, false);
plannerContext.getExtraCmds().put(ConnectionProperties.ENABLE_POST_PLANNER, false);
}
// validate
SqlConverter converter =
SqlConverter.getInstance(plannerContext.getSchemaName(), plannerContext.getExecutionContext());
if (GeneralUtil
.getPropertyBoolean(plannerContext.getExecutionContext().getUserDefVariables(), "auto_partition", false) ||
GeneralUtil
.getPropertyLong(plannerContext.getExecutionContext().getUserDefVariables(), "auto_partition", 0)
!= 0) {
converter.enableAutoPartition();
// Critical: Do unconditional rewrite on original sql(do this to make async ddl normal).
final List<SQLStatement> statementList =
SQLUtils.parseStatements(plannerContext.getExecutionContext().getOriginSql(), JdbcConstants.MYSQL);
if (1 == statementList.size() && statementList.get(0) instanceof MySqlCreateTableStatement) {
final MySqlCreateTableStatement stmt = (MySqlCreateTableStatement) statementList.get(0);
if (!stmt.isPrefixPartition()) {
stmt.setPrefixPartition(true);
plannerContext.getExecutionContext().setOriginSql(stmt.toString()); // Do rewrite.
}
}
}
// Dealing auto partition hint.
if (plannerContext.getExecutionContext().getParamManager().getBoolean(ConnectionParams.AUTO_PARTITION)) {
converter.enableAutoPartition();
}
// Dealing new partition database.
if (DbInfoManager.getInstance().isNewPartitionDb(plannerContext.getSchemaName())) {
boolean disableAutoPartitionOnNewPartitionDB = false;
if (!GeneralUtil.getPropertyBoolean
(plannerContext.getExecutionContext().getUserDefVariables(), "auto_partition", true)
|| 0 == GeneralUtil.getPropertyLong
(plannerContext.getExecutionContext().getUserDefVariables(), "auto_partition", 1)) {
disableAutoPartitionOnNewPartitionDB = true;
}
if (plannerContext.getExecutionContext().getParamManager().getProps()
.containsKey(ConnectionProperties.AUTO_PARTITION) &&
!plannerContext.getExecutionContext().getParamManager().getBoolean(ConnectionParams.AUTO_PARTITION)) {
disableAutoPartitionOnNewPartitionDB = true;
}
// Use hint to disable auto partition on new partition table. Or it enable by default.
if (!disableAutoPartitionOnNewPartitionDB) {
converter.setAutoPartitionDatabase();
converter.enableAutoPartition();
}
}
SqlNode validatedNode = converter.validate(ast);
// sqlNode to relNode
RelNode relNode = converter.toRel(validatedNode, plannerContext);
// relNode to drdsRelNode
ToDrdsRelVisitor toDrdsRelVisitor = new ToDrdsRelVisitor(validatedNode, plannerContext);
RelNode drdsRelNode = relNode.accept(toDrdsRelVisitor);
if (plannerContext.getSqlKind().belongsTo(QUERY)) {
Map<LogicalTableScan, RexNode> predicateMap = getRexNodeTableMap(drdsRelNode);
if (predicateMap != null && !predicateMap.values().stream()
.anyMatch(predicate -> !PlanManagerUtil.isSimpleCondition(predicate))) {
plannerContext.setExprMap(predicateMap);
}
}
RelMetadataQuery mq = drdsRelNode.getCluster().getMetadataQuery();
if (Boolean
.parseBoolean(plannerContext.getParamManager().getProps().get(ConnectionProperties.PREPARE_OPTIMIZE))) {
return constructExecutionPlan(mq.getOriginalRowType(drdsRelNode), drdsRelNode, drdsRelNode, validatedNode,
converter,
toDrdsRelVisitor, plannerContext,
false);
}
RelNode optimizedNode;
boolean shouldDirect;
RelNode unoptimizedNode = drdsRelNode;
if (plannerContext.getExternalizePlan() != null) {
// use plan
final RelOptCluster cluster =
SqlConverter.getInstance(plannerContext.getSchemaName(), plannerContext.getExecutionContext())
.createRelOptCluster(plannerContext);
optimizedNode =
PlanManagerUtil.jsonToRelNode(plannerContext.getExternalizePlan(), cluster,
SqlConverter.getInstance(plannerContext.getSchemaName(), plannerContext.getExecutionContext())
.getCatalog());
shouldDirect = false;
} else {
// optimize
shouldDirect = shouldDirect(toDrdsRelVisitor, validatedNode, plannerContext);
optimizedNode = shouldDirect ? unoptimizedNode : optimize(unoptimizedNode, plannerContext);
}
ExecutionPlan executionPlan =
constructExecutionPlan(mq.getOriginalRowType(drdsRelNode), unoptimizedNode, optimizedNode, validatedNode,
converter,
toDrdsRelVisitor, plannerContext,
shouldDirect);
checkModifyLimitation(executionPlan, validatedNode, plannerContext.getExecutionContext().isUseHint(),
plannerContext);
PostPlanner.getInstance().setSkipPostOptFlag(plannerContext, optimizedNode, shouldDirect);
return executionPlan;
}
/**
* Use HepPlanner and VolcanoPlanner to optimize logical plan.
*
* @param input logical plan
* @return physical plan
*/
public RelNode optimize(RelNode input, PlannerContext plannerContext) {
RelNode optimizedPlan = sqlRewriteAndPlanEnumerate(input, plannerContext);
if (logger.isDebugEnabled()) {
logger.debug("The optimized relNode: \n" + RelOptUtil.toString(input));
}
return optimizedPlan;
}
private void checkModifyLimitation(ExecutionPlan executionPlan, SqlNode sqlNode, boolean skip,
PlannerContext plannerContext) {
RelNode relNode = executionPlan.getPlan();
if (relNode instanceof LogicalInsert) {
CheckModifyLimitation.check((LogicalInsert) relNode, sqlNode, skip, plannerContext);
} else if (relNode instanceof LogicalModifyView) {
CheckModifyLimitation.check((LogicalModifyView) relNode, plannerContext.getExecutionContext());
} else if (relNode instanceof DirectTableOperation) {
CheckModifyLimitation.check((DirectTableOperation) relNode);
}
}
/**
* Optimize a Plan that support scale out
*/
public RelNode optimizeScaleOutPlan(RelNode input, PlannerContext plannerContext) {
// To be impl, now just use the method of optimize() instead
return optimize(input, plannerContext);
}
private RelNode sqlRewriteAndPlanEnumerate(RelNode input, PlannerContext plannerContext) {
CalcitePlanOptimizerTrace.getOptimizerTracer().get().addSnapshot("Start", input, plannerContext);
RelNode logicalOutput = optimizeBySqlWriter(input, plannerContext);
CalcitePlanOptimizerTrace.getOptimizerTracer().get()
.addSnapshot("PlanEnumerate", logicalOutput, plannerContext);
RelNode bestPlan = optimizeByPlanEnumerator(logicalOutput, plannerContext);
// finally we should clear the planner to release memory
bestPlan.getCluster().getPlanner().clear();
bestPlan.getCluster().invalidateMetadataQuery();
return bestPlan;
}
public RelNode optimizeBySqlWriter(RelNode input, PlannerContext plannerContext) {
//validate heuristic order if there are more than joins
CountVisitor countVisitor = new CountVisitor();
countVisitor.visit(input);
plannerContext.setShouldUseHeuOrder(countVisitor.getJoinCount() >=
plannerContext.getParamManager().getInt(ConnectionParams.RBO_HEURISTIC_JOIN_REORDER_LIMIT));
CalcitePlanOptimizerTrace.getOptimizerTracer().get().addSnapshot("Start", input, plannerContext);
HepProgramBuilder hepPgmBuilder = new HepProgramBuilder();
hepPgmBuilder.addMatchOrder(HepMatchOrder.ARBITRARY);
for (SQL_REWRITE_RULE_PHASE r : SQL_REWRITE_RULE_PHASE.values()) {
hepPgmBuilder.addMatchOrder(r.getMatchOrder());
hepPgmBuilder.addGroupBegin();
for (ImmutableList<RelOptRule> relOptRuleList : r.getCollectionList()) {
hepPgmBuilder.addRuleCollection(relOptRuleList);
}
for (RelOptRule relOptRule : r.getSingleList()) {
hepPgmBuilder.addRuleInstance(relOptRule);
}
hepPgmBuilder.addGroupEnd();
}
final HepPlanner planner = new HepPlanner(hepPgmBuilder.build(), plannerContext);
planner.setRoot(input);
return planner.findBestExp();
}
public RelNode optimizeByPlanEnumerator(RelNode input, PlannerContext plannerContext) {
VolcanoPlanner volcanoPlanner = (VolcanoPlanner) input.getCluster().getPlanner();
volcanoPlanner.clear();
ParamManager paramManager = plannerContext.getParamManager();
CountVisitor countVisitor = new CountVisitor();
input.accept(countVisitor);
volcanoPlanner.setTopDownOpt(true);
boolean enableBranchAndBoundOptimization =
paramManager.getBoolean(ConnectionParams.ENABLE_BRANCH_AND_BOUND_OPTIMIZATION);
int volcanoStartUpCostJoinLimit = paramManager.getInt(ConnectionParams.CBO_START_UP_COST_JOIN_LIMIT);
volcanoPlanner.setStartUpCostOpt(countVisitor.getLimitCount() > 0
&& countVisitor.getJoinCount() <= volcanoStartUpCostJoinLimit);
volcanoPlanner.setEnableBranchAndBound(enableBranchAndBoundOptimization);
boolean enablePassThrough = paramManager.getBoolean(ConnectionParams.ENABLE_PASS_THROUGH_TRAIT);
volcanoPlanner.setEnablePassThrough(enablePassThrough);
boolean enableDerive = paramManager.getBoolean(ConnectionParams.ENABLE_DERIVE_TRAIT);
volcanoPlanner.setEnableDerive(enableDerive);
addCBORule(volcanoPlanner, countVisitor, paramManager, plannerContext);
RelNode newInput;
if (!input.getTraitSet().contains(DrdsConvention.INSTANCE)) {
newInput =
volcanoPlanner.changeTraits(input, input.getTraitSet().simplify().replace(DrdsConvention.INSTANCE));
} else {
// some nodes already in DrdsConvention
newInput = input;
}