ygerzhedovich commented on a change in pull request #9476: URL: https://github.com/apache/ignite/pull/9476#discussion_r725868417
########## File path: modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/RootQuery.java ########## @@ -0,0 +1,316 @@ +/* + * 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.ArrayList; +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 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; + +/** */ +public class RootQuery<Row> extends Query<Row> { + /** SQL query. */ + private final String sql; + + /** Parameters. */ + private final Object[] params; + + /** Logger. */ + private final IgniteLogger log; + + /** remote nodes */ + private final Set<UUID> remotes; + + /** node to fragment */ + private final Set<RemoteFragmentKey> waiting; + + /** */ + private volatile RootNode<Row> root; + + /** */ + private volatile PlanningContext pctx; + + /** */ + private final BaseQueryContext ctx; + + /** */ + private final ExchangeService exch; + + /** */ + public RootQuery( + String sql, + SchemaPlus schema, + Object[] params, + QueryContext qryCtx, + ExchangeService exch, + Consumer<Query> unregister, + IgniteLogger log + ) { + super(UUID.randomUUID(), qryCtx != null? qryCtx.unwrap(GridQueryCancel.class) : null, unregister); + + this.sql = sql; + this.params = params; + this.exch = exch; + this.log = log; + + 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(); + } + + /** */ + public RootQuery childQuery(SchemaPlus schema) { + return new RootQuery(sql, schema, params, null, exch, unregister, log); + } + + /** */ + public BaseQueryContext context() { + return ctx; + } + + /** */ + public String sql() { + return sql; + } + + /** */ + public Object[] parameters() { + return params; + } + + /** */ + public void run(ExecutionContext<Row> ctx, MultiStepPlan plan, Node<Row> root) { + if (state == QueryState.CLOSED) { + throw new IgniteSQLException( + "The query was cancelled while executing.", + IgniteQueryErrorCode.QUERY_CANCELED + ); + } + + RootNode<Row> 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.EXECUTION; + } + + /** + * Can be called multiple times after receive each error + * at {@link #onResponse(RemoteFragmentKey, Throwable)}. + */ + @Override protected void tryClose() { + QueryState state0 = null; + + synchronized (this) { + if (state == QueryState.CLOSED) + return; + + if (state == QueryState.PLANNING) { + state = QueryState.CLOSED; + + return; + } + + if (state == QueryState.EXECUTION) + 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() { + if (pctx == null) { + state = QueryState.PLANNING; + + pctx = PlanningContext.builder() + .parentContext(ctx) + .query(sql) + .parameters(params) + .build(); + + try { + cancel.add(() -> pctx.unwrap(CancelFlag.class).requestCancel()); + } + catch (QueryCancelledException e) { + throw new IgniteSQLException(e.getMessage(), IgniteQueryErrorCode.QUERY_CANCELED, e); + } + } + + return pctx; + } + + /** */ + public Iterator<Row> iterator() { + return root; + } + + /** */ + public void onNodeLeft(UUID nodeId) { + List<RemoteFragmentKey> fragments = null; + + synchronized (this) { + for (RemoteFragmentKey fragment : waiting) { + if (!fragment.nodeId().equals(nodeId)) + continue; + + if (fragments == null) + fragments = new ArrayList<>(); + + fragments.add(fragment); + } Review comment: ```suggestion fragments = waiting.stream().filter(f -> f.nodeId().equals(nodeId)).collect(Collectors.toList());``` -- This is an automated message from the Apache Git Service. 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