tanishq-chugh commented on code in PR #5451: URL: https://github.com/apache/hive/pull/5451#discussion_r1763207864
########## service/src/java/org/apache/hive/service/servlet/OTELExporter.java: ########## @@ -0,0 +1,229 @@ +/* + * 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.hive.service.servlet; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.TimeUnit; + +import com.google.common.base.Joiner; +import io.opentelemetry.api.OpenTelemetry; +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.trace.Span; +import io.opentelemetry.api.trace.Tracer; +import io.opentelemetry.context.Context; +import io.opentelemetry.sdk.internal.AttributesMap; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import org.apache.hadoop.hive.ql.QueryDisplay; +import org.apache.hadoop.hive.ql.QueryInfo; +import org.apache.hive.service.cli.operation.OperationManager; +import org.apache.hive.service.cli.session.SessionManager; + +public class OTELExporter extends Thread { + private static final String INSTRUMENTATION_NAME = OTELExporter.class.getName(); + private static final Logger LOG = LoggerFactory.getLogger(OTELExporter.class); + private final OperationManager operationManager; + private Set<String> historicalQueryId; + private final long frequency; + private final Tracer tracer; + private Map<String, Span> queryIdToSpanMap; + private Map<String, List<String>> queryIdToTasksMap; + + public OTELExporter(OpenTelemetry openTelemetry, SessionManager sessionManager, long frequency) { + this.tracer = openTelemetry.getTracer(INSTRUMENTATION_NAME); + this.operationManager = sessionManager.getOperationManager(); + this.historicalQueryId = new HashSet<>(); + this.frequency = frequency; + this.queryIdToSpanMap = new HashMap<>(); + this.queryIdToTasksMap = new HashMap<>(); + } + + @Override + public void run() { + while (true) { + exposeMetricsToOTEL(); + try { + Thread.sleep(frequency); + } catch (InterruptedException e) { + throw new RuntimeException(e); + } + } + } + + public void exposeMetricsToOTEL() { + List<QueryInfo> liveQueries = operationManager.getLiveQueryInfos(); + List<QueryInfo> historicalQueries = operationManager.getHistoricalQueryInfos(); + + LOG.debug("Found {} liveQueries and {} historicalQueries", liveQueries.size(), historicalQueries.size()); + + for (QueryInfo lQuery: liveQueries){ + + while (lQuery.getQueryDisplay() == null) { + try { + Thread.sleep(500); + } catch (InterruptedException e) { + throw new RuntimeException(e); + } + } + + String queryID = lQuery.getQueryDisplay().getQueryId(); + + //In case of live query previously encountered in past loops + if(queryIdToSpanMap.containsKey(queryID)){ + Span rootspan = queryIdToSpanMap.get(queryID); + + for (QueryDisplay.TaskDisplay task : lQuery.getQueryDisplay().getTaskDisplays()) { + if(task.getReturnValue() != null && (queryIdToTasksMap.get(queryID) == null || !queryIdToTasksMap.get(queryID).contains(task.getTaskId()))){ + queryIdToTasksMap.get(queryID).add(task.getTaskId()); + Context parentContext = Context.current().with(rootspan); + Span currSpan = tracer.spanBuilder(queryID+ " - " + task.getTaskId() + " - live").setParent(parentContext).setAllAttributes(addTaskAttributes(task)) + .setStartTimestamp(task.getBeginTime(), TimeUnit.MILLISECONDS).startSpan(); + while (task.getEndTime() == null){ + try { + Thread.sleep(500); + } catch (InterruptedException e) { + throw new RuntimeException(e); + } + } + currSpan.end(task.getEndTime(), TimeUnit.MILLISECONDS); + } + } + } else { + // In case of live queries being seen for first time + Span rootspan = tracer.spanBuilder(queryID + " - live") + .startSpan(); + List<String> completedTasks = new ArrayList<>(); + for (QueryDisplay.TaskDisplay task : lQuery.getQueryDisplay().getTaskDisplays()) { + if (task.getReturnValue() != null) { + completedTasks.add(task.getTaskId()); + Context parentContext = Context.current().with(rootspan); + Span currSpan = tracer.spanBuilder(queryID + " - " + task.getTaskId() + " - live").setParent(parentContext).setAllAttributes(addTaskAttributes(task)) + .setStartTimestamp(task.getBeginTime(), TimeUnit.MILLISECONDS).startSpan(); + + while (task.getEndTime() == null) { + try { + Thread.sleep(500); + } catch (InterruptedException e) { + throw new RuntimeException(e); + } + } + currSpan.end(task.getEndTime(), TimeUnit.MILLISECONDS); + } + } + + if(rootspan != null){ + queryIdToSpanMap.put(queryID,rootspan); + queryIdToTasksMap.put(queryID,completedTasks); + } + + } + } + + + for (QueryInfo hQuery : historicalQueries) { + + //For queries that were live till last loop but have ended before start of this loop + if(queryIdToSpanMap.containsKey(hQuery.getQueryDisplay().getQueryId())){ + String hQueryId = hQuery.getQueryDisplay().getQueryId(); + Span rootspan = queryIdToSpanMap.get(hQueryId); + for (QueryDisplay.TaskDisplay task : hQuery.getQueryDisplay().getTaskDisplays()) { + if(queryIdToTasksMap.get(hQueryId) == null || !queryIdToTasksMap.get(hQueryId).contains(task.getTaskId())){ + queryIdToTasksMap.get(hQueryId).add(task.getTaskId()); + Context parentContext = Context.current().with(rootspan); + Span currSpan = tracer.spanBuilder(hQueryId+ " - " + task.getTaskId() + " - completed").setParent(parentContext).setAllAttributes(addTaskAttributes(task)) + .setStartTimestamp(task.getBeginTime(), TimeUnit.MILLISECONDS).startSpan(); + currSpan.end(task.getEndTime(), TimeUnit.MILLISECONDS); Review Comment: Made this change at all the other points as well. -- This is an automated message from the Apache Git Service. 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