walterddr commented on code in PR #10711: URL: https://github.com/apache/pinot/pull/10711#discussion_r1188872327
########## pinot-query-runtime/src/main/java/org/apache/pinot/query/runtime/executor/LeafSchedulerService.java: ########## @@ -0,0 +1,102 @@ +/** + * 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.pinot.query.runtime.executor; + +import java.util.List; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Future; +import java.util.stream.Collectors; +import org.apache.pinot.core.util.trace.TraceRunnable; +import org.apache.pinot.query.runtime.blocks.TransferableBlock; +import org.apache.pinot.query.runtime.operator.OpChain; +import org.apache.pinot.query.runtime.operator.OpChainId; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +public class LeafSchedulerService { + private static final Logger LOGGER = LoggerFactory.getLogger(LeafSchedulerService.class); + + private final ExecutorService _executorService; + private final ConcurrentHashMap<OpChainId, Future<?>> _submittedOpChainMap; + + public LeafSchedulerService(ExecutorService executorService) { + _executorService = executorService; + _submittedOpChainMap = new ConcurrentHashMap<>(); + } + + public void register(OpChain operatorChain) { + Future<?> scheduledFuture = _executorService.submit(new TraceRunnable() { + @Override + public void runJob() { + boolean isFinished = false; + boolean returnedErrorBlock = false; + Throwable thrown = null; + try { + LOGGER.trace("({}): Executing", operatorChain); + operatorChain.getStats().executing(); + TransferableBlock result = operatorChain.getRoot().nextBlock(); + while (!result.isEndOfStreamBlock()) { + result = operatorChain.getRoot().nextBlock(); + } + isFinished = true; + if (result.isErrorBlock()) { + returnedErrorBlock = true; + LOGGER.error("({}): Completed erroneously {} {}", operatorChain, operatorChain.getStats(), + result.getDataBlock().getExceptions()); + } else { + LOGGER.debug("({}): Completed {}", operatorChain, operatorChain.getStats()); + } + } catch (Exception e) { + LOGGER.error("({}): Failed to execute operator chain! {}", operatorChain, operatorChain.getStats(), e); + thrown = e; + } finally { + if (returnedErrorBlock || thrown != null) { + cancelOpChain(operatorChain, thrown); + } else if (isFinished) { + closeOpChain(operatorChain); + } + } + } + }); + _submittedOpChainMap.put(operatorChain.getId(), scheduledFuture); + } + + public void cancel(long requestId) { Review Comment: q1: cancel is done on a requestID basis or opChain basis q2: who is keeping track of the opChainID to requestID mapping? q3: how do we handle out-of-order opChain creation vs. cancellation? -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
