timoninmaxim commented on a change in pull request #9081: URL: https://github.com/apache/ignite/pull/9081#discussion_r718596118
########## File path: modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/CacheQueryPageRequester.java ########## @@ -0,0 +1,236 @@ +/* + * 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.cache.query; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.List; +import java.util.UUID; +import java.util.function.Consumer; +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.IgniteLogger; +import org.apache.ignite.cluster.ClusterNode; +import org.apache.ignite.internal.managers.communication.GridIoPolicy; +import org.apache.ignite.internal.processors.cache.GridCacheContext; +import org.apache.ignite.internal.util.typedef.internal.U; +import org.jetbrains.annotations.Nullable; + +/** + * This class is responsible for sending request for query result pages to remote nodes. + */ +public class CacheQueryPageRequester { + /** Cache context. */ + private final GridCacheContext<?, ?> cctx; + + /** Ignite logger. */ + private final IgniteLogger log; + + /** Local handler of cache query request. */ + private final Consumer<GridCacheQueryRequest> sendLoc; + + /** + * @param cctx Cache context. + * @param sendLoc Local handler of cache query request. + */ + CacheQueryPageRequester(GridCacheContext<?, ?> cctx, Consumer<GridCacheQueryRequest> sendLoc) { + this.cctx = cctx; + this.sendLoc = sendLoc; + + log = cctx.kernalContext().config().getGridLogger(); + } + + /** + * Send initial query request to specified nodes. + * + * @param reqId Request (cache query) ID. + * @param fut Cache query future, contains query info. + * @param nodes Collection of nodes to send a request. + */ + public void initRequestPages(long reqId, GridCacheDistributedQueryFuture<?, ?, ?> fut, + Collection<ClusterNode> nodes) throws IgniteCheckedException { + GridCacheQueryBean bean = fut.query(); + GridCacheQueryAdapter<?> qry = bean.query(); + + boolean deployFilterOrTransformer = (qry.scanFilter() != null || qry.transform() != null) + && cctx.gridDeploy().enabled(); + + GridCacheQueryRequest req = new GridCacheQueryRequest( + cctx.cacheId(), + reqId, + cctx.name(), + qry.type(), + fut.fields(), + qry.clause(), + qry.idxQryDesc(), + qry.limit(), + qry.queryClassName(), + qry.scanFilter(), + qry.partition(), + bean.reducer(), + qry.transform(), + qry.pageSize(), + qry.includeBackups(), + bean.arguments(), + qry.includeMetadata(), + qry.keepBinary(), + qry.taskHash(), + cctx.startTopologyVersion(), + qry.mvccSnapshot(), + // Force deployment anyway if scan query is used. + cctx.deploymentEnabled() || deployFilterOrTransformer, + qry.isDataPageScanEnabled()); + + List<UUID> sendNodes = new ArrayList<>(); + + for (ClusterNode n: nodes) + sendNodes.add(n.id()); + + sendRequest(fut, req, sendNodes); + } + + /** + * Send request for fetching query result pages to specified nodes. + * + * @param reqId Request (cache query) ID. + * @param nodes Collection of nodes to send a request. + * @param all If {@code true} then request for all pages, otherwise for single only. + */ + public void requestPages(long reqId, GridCacheQueryFutureAdapter<?, ?, ?> fut, Collection<UUID> nodes, boolean all) { + GridCacheQueryAdapter<?> qry = fut.query().query(); + + GridCacheQueryRequest req = new GridCacheQueryRequest( + cctx.cacheId(), + reqId, + cctx.name(), + qry.pageSize(), + qry.includeBackups(), + fut.fields(), + all, + qry.keepBinary(), + qry.taskHash(), + cctx.startTopologyVersion(), + // Force deployment anyway if scan query is used. + cctx.deploymentEnabled() || (qry.scanFilter() != null && cctx.gridDeploy().enabled()), + qry.isDataPageScanEnabled()); + + try { + sendRequest(fut, req, nodes); + + } catch (IgniteCheckedException e) { + fut.onDone(e); + } + } + + /** + * Send cancel query request, so no new pages will be sent. + * + * @param reqId Query request ID. + * @param nodes Collection of nodes to send the cancel request. + * @param fieldsQry Whether query is a fields query. + * + */ + public void cancelQuery(long reqId, Collection<UUID> nodes, boolean fieldsQry) { + GridCacheQueryManager<?, ?> qryMgr = cctx.queries(); + + assert qryMgr != null; + + try { + GridCacheQueryRequest req = new GridCacheQueryRequest(cctx.cacheId(), + reqId, + fieldsQry, + cctx.startTopologyVersion(), + cctx.deploymentEnabled()); + + sendRequest(null, req, nodes); + } + catch (IgniteCheckedException e) { + U.error(log, "Failed to send cancel request (will cancel query in any case).", e); + } + } + + /** + * Sends query request. + * + * @param fut Cache query future. {@code null} in case of cancel request. + * @param req Request. + * @param nodes Nodes. + * @throws IgniteCheckedException In case of error. + */ + private void sendRequest( + @Nullable GridCacheQueryFutureAdapter<?, ?, ?> fut, + GridCacheQueryRequest req, + Collection<UUID> nodes + ) throws IgniteCheckedException { + assert req != null; + assert nodes != null; + + UUID locNodeId = cctx.localNodeId(); + + boolean loc = false; + + for (UUID nodeId : nodes) { + if (nodeId.equals(locNodeId)) + loc = true; + else { + if (req.cancel()) + sendNodeCancelRequest(nodeId, req); + else if (!sendNodePageRequest(nodeId, req, fut)) + return; + } + } + + if (loc) + sendLoc.accept(req); + } + + /** */ + private void sendNodeCancelRequest(UUID nodeId, GridCacheQueryRequest req) throws IgniteCheckedException { + try { + cctx.io().send(nodeId, req, GridIoPolicy.QUERY_POOL); + } + catch (IgniteCheckedException e) { + if (cctx.io().checkNodeLeft(nodeId, e, false)) { Review comment: I'd like to remain this check. There is a logic of node left. And this code interfere to this situation. I think this behavior should be investigated with some tests. I will create a separate ticket for that. -- 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]
