tledkov-gridgain commented on a change in pull request #9476: URL: https://github.com/apache/ignite/pull/9476#discussion_r744706123
########## File path: modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/RootQuery.java ########## @@ -0,0 +1,349 @@ +/* + * 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.ignite.internal.processors.query.calcite; + +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Set; +import java.util.UUID; +import java.util.function.Consumer; +import java.util.stream.Collectors; + +import org.apache.calcite.plan.Context; +import org.apache.calcite.schema.SchemaPlus; +import org.apache.calcite.tools.Frameworks; +import org.apache.calcite.util.CancelFlag; +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.IgniteException; +import org.apache.ignite.IgniteLogger; +import org.apache.ignite.cache.query.QueryCancelledException; +import org.apache.ignite.internal.cluster.ClusterTopologyCheckedException; +import org.apache.ignite.internal.processors.cache.query.IgniteQueryErrorCode; +import org.apache.ignite.internal.processors.query.GridQueryCancel; +import org.apache.ignite.internal.processors.query.IgniteSQLException; +import org.apache.ignite.internal.processors.query.QueryContext; +import org.apache.ignite.internal.processors.query.QueryState; +import org.apache.ignite.internal.processors.query.calcite.exec.ExchangeService; +import org.apache.ignite.internal.processors.query.calcite.exec.ExecutionContext; +import org.apache.ignite.internal.processors.query.calcite.exec.rel.Node; +import org.apache.ignite.internal.processors.query.calcite.exec.rel.RootNode; +import org.apache.ignite.internal.processors.query.calcite.prepare.BaseQueryContext; +import org.apache.ignite.internal.processors.query.calcite.prepare.Fragment; +import org.apache.ignite.internal.processors.query.calcite.prepare.MultiStepPlan; +import org.apache.ignite.internal.processors.query.calcite.prepare.PlanningContext; +import org.apache.ignite.internal.processors.query.calcite.util.Commons; +import org.apache.ignite.internal.util.typedef.F; +import org.apache.ignite.internal.util.typedef.internal.S; + +import static org.apache.ignite.internal.processors.query.calcite.CalciteQueryProcessor.FRAMEWORK_CONFIG; + +/** + * The RootQuery is created on the qury initiator (originator) node as the first step of a query run; + * It contains the information about query state, contexts, remote fragments; + * It provides 'cancel' functionality for running query like a base query class. + */ +public class RootQuery<RowT> extends Query<RowT> { + /** SQL query. */ + private final String sql; + + /** Parameters. */ + private final Object[] params; + + /** remote nodes */ + private final Set<UUID> remotes; + + /** node to fragment */ + private final Set<RemoteFragmentKey> waiting; + + /** */ + private volatile RootNode<RowT> root; + + /** */ + private volatile PlanningContext pctx; + + /** */ + private final BaseQueryContext ctx; + + /** */ + public RootQuery( + String sql, + SchemaPlus schema, + Object[] params, + QueryContext qryCtx, + ExchangeService exch, + Consumer<Query<RowT>> unregister, + IgniteLogger log + ) { + super( + UUID.randomUUID(), + null, + qryCtx != null ? qryCtx.unwrap(GridQueryCancel.class) : null, + exch, + unregister, + log + ); + + this.sql = sql; + this.params = params; + + remotes = new HashSet<>(); + waiting = new HashSet<>(); + + Context parent = Commons.convert(qryCtx); + + ctx = BaseQueryContext.builder() + .parentContext(parent) + .frameworkConfig( + Frameworks.newConfigBuilder(FRAMEWORK_CONFIG) + .defaultSchema(schema) + .build() + ) + .logger(log) + .build(); + } + + /** + * Creates the new root that inherits the query parameters from {@code this} query. + * Is used to execute DML query immediately after (inside) DDL. + * e.g.: + * CREATE TABLE MY_TABLE AS SELECT ... FROM ...; + * + * @param schema new schema. + */ + public RootQuery<RowT> childQuery(SchemaPlus schema) { + return new RootQuery<>(sql, schema, params, QueryContext.of(cancel), exch, unregister, log); + } + + /** */ + public BaseQueryContext context() { + return ctx; + } + + /** */ + public String sql() { + return sql; + } + + /** */ + public Object[] parameters() { + return params; + } + + /** + * Starts maping phase for the query. + */ + public void mapping() { + synchronized (mux) { + if (state == QueryState.CLOSED) { + throw new IgniteSQLException( + "The query was cancelled while executing.", + IgniteQueryErrorCode.QUERY_CANCELED + ); + } + + state = QueryState.MAPPING; + } + } + + /** + * Starts execution phase for the query and setup remote fragments. + */ + public void run(ExecutionContext<RowT> ctx, MultiStepPlan plan, Node<RowT> root) { + synchronized (mux) { + if (state == QueryState.CLOSED) { + throw new IgniteSQLException( + "The query was cancelled while executing.", + IgniteQueryErrorCode.QUERY_CANCELED + ); + } + + RootNode<RowT> rootNode = new RootNode<>(ctx, plan.fieldsMetadata().rowType(), this::tryClose); + rootNode.register(root); + + addFragment(new RunningFragment<>(F.first(plan.fragments()).root(), rootNode, ctx)); + + this.root = rootNode; + + for (int i = 1; i < plan.fragments().size(); i++) { + Fragment fragment = plan.fragments().get(i); + List<UUID> nodes = plan.mapping(fragment).nodeIds(); + + remotes.addAll(nodes); + + for (UUID node : nodes) + waiting.add(new RemoteFragmentKey(node, fragment.fragmentId())); + } + + state = QueryState.EXECUTING; + } + } + + /** + * Can be called multiple times after receive each error + * at {@link #onResponse(RemoteFragmentKey, Throwable)}. + */ + @Override protected void tryClose() { + QueryState state0 = null; + + synchronized (mux) { + if (state == QueryState.CLOSED) + return; + + if (state == QueryState.INITED || state == QueryState.PLANNING) { + state = QueryState.CLOSED; + + return; + } + + if (state == QueryState.EXECUTING) + state0 = state = QueryState.CLOSING; + + root.closeInternal(); + + if (state == QueryState.CLOSING && waiting.isEmpty()) + state0 = state = QueryState.CLOSED; + } + + if (state0 == QueryState.CLOSED) { + try { + IgniteException wrpEx = null; + + for (UUID nodeId : remotes) { + try { + if (!nodeId.equals(root.context().localNodeId())) + exch.closeQuery(nodeId, id()); + } + catch (IgniteCheckedException e) { + if (wrpEx == null) + wrpEx = new IgniteException("Failed to send cancel message. [nodeId=" + nodeId + ']', e); + else + wrpEx.addSuppressed(e); + } + } + + if (wrpEx != null) + throw wrpEx; + } + finally { + super.tryClose(); + } + } + } + + /** {@inheritDoc} */ + @Override public void cancel() { + cancel.cancel(); + + tryClose(); + } + + /** */ + public PlanningContext planningContext() { + synchronized (mux) { + if (state == QueryState.CLOSED) { + throw new IgniteSQLException( + "The query was cancelled while executing.", + IgniteQueryErrorCode.QUERY_CANCELED + ); + } + + if (pctx == null) { + state = QueryState.PLANNING; Review comment: Flow is fixed here -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
