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Improvement[dashboard] add more info for application
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wenlongwlli
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Aug 19, 2024
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coordinator/src/main/java/org/apache/uniffle/coordinator/CoordinatorAppHistoryManager.java
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| /* | ||
| * 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.uniffle.coordinator; | ||
|
|
||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.ArrayList; | ||
| import java.util.LinkedHashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.concurrent.BlockingQueue; | ||
| import java.util.concurrent.LinkedBlockingQueue; | ||
| import java.util.concurrent.TimeUnit; | ||
|
|
||
| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import org.apache.hadoop.fs.FileSystem; | ||
| import org.apache.hadoop.fs.Path; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| import org.apache.uniffle.common.filesystem.HadoopFilesystemProvider; | ||
| import org.apache.uniffle.coordinator.web.vo.AppInfoVO; | ||
| import org.apache.uniffle.storage.handler.impl.HadoopFileReader; | ||
| import org.apache.uniffle.storage.handler.impl.HadoopFileWriter; | ||
|
|
||
| public class CoordinatorAppHistoryManager { | ||
| private static final Logger LOG = LoggerFactory.getLogger(CoordinatorAppHistoryManager.class); | ||
| private final BlockingQueue<AppInfoVO> appInfoQueue; | ||
| private volatile boolean isRunning; | ||
| private final Map<String, AppInfoVO> cachedAppInfoMap; | ||
| private final int cachedAppInfoSize; | ||
| private final int dashboardAppInfoMaxSize; | ||
| private final CoordinatorConf conf; | ||
|
|
||
| private Path path = null; | ||
| private HadoopFileWriter hadoopFileWriter = null; | ||
| private int batchSize = 0; | ||
| private long flushIntervalMs = 0; | ||
|
|
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| private static final ObjectMapper objectMapper = new ObjectMapper(); | ||
|
|
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| public CoordinatorAppHistoryManager(CoordinatorConf conf) throws Exception { | ||
| this.conf = conf; | ||
| this.isRunning = true; | ||
| this.appInfoQueue = | ||
| new LinkedBlockingQueue<>( | ||
| this.conf.getInteger(CoordinatorConf.COORDINATOR_APP_HISTORY_CACHE_MAX_SIZE)); | ||
| this.cachedAppInfoSize = | ||
| this.conf.getInteger(CoordinatorConf.COORDINATOR_APP_HISTORY_CACHE_MAX_SIZE); | ||
| this.dashboardAppInfoMaxSize = this.cachedAppInfoSize; | ||
| this.cachedAppInfoMap = | ||
| new LinkedHashMap<String, AppInfoVO>(this.cachedAppInfoSize, 0.75f, true) { | ||
| @Override | ||
| protected boolean removeEldestEntry(Map.Entry<String, AppInfoVO> eldest) { | ||
| return size() > cachedAppInfoSize; | ||
| } | ||
| }; | ||
| String historyFile = this.conf.getString(CoordinatorConf.COORDINATOR_APP_HISTORY_PATH); | ||
| if (historyFile != null && !historyFile.isEmpty()) { | ||
| // Convert relative path to absolute path | ||
| if (historyFile.startsWith("file://./")) { | ||
| String absPath = new File(historyFile.substring(7)).getAbsolutePath(); | ||
| historyFile = "file://" + absPath; | ||
| } | ||
| this.path = new Path(historyFile); | ||
| FileSystem fileSystem = | ||
| HadoopFilesystemProvider.getFilesystem( | ||
| "rss_coordinator_app_history", path, this.conf.getHadoopConf()); | ||
| this.hadoopFileWriter = new HadoopFileWriter(fileSystem, path, this.conf.getHadoopConf()); | ||
| this.batchSize = this.conf.getInteger(CoordinatorConf.COORDINATOR_APP_HISTORY_BATCH_SIZE); | ||
| this.flushIntervalMs = | ||
| this.conf.getLong(CoordinatorConf.COORDINATOR_APP_HISTORY_FLUSH_INTERVAL_MS); | ||
| startPersistentThread(); | ||
| loadAppInfo(); | ||
| } | ||
| } | ||
|
|
||
| public void startPersistentThread() { | ||
| Thread persistentThread = | ||
| new Thread( | ||
| () -> { | ||
| while (isRunning) { | ||
| try { | ||
| persistentAppInfoBatch(); | ||
| } catch (Exception e) { | ||
| LOG.error("Error in persistent thread", e); | ||
| } | ||
| } | ||
| }); | ||
| persistentThread.setName("AppHistoryPersistentThread"); | ||
| persistentThread.setDaemon(true); | ||
| persistentThread.start(); | ||
| } | ||
|
|
||
| private void persistentAppInfoBatch() throws InterruptedException { | ||
| List<AppInfoVO> batch = new ArrayList<>(batchSize); | ||
| long startTime = System.currentTimeMillis(); | ||
|
|
||
| while (batch.size() < batchSize && (System.currentTimeMillis() - startTime) < flushIntervalMs) { | ||
| AppInfoVO appInfoVO = | ||
| appInfoQueue.poll( | ||
| flushIntervalMs - (System.currentTimeMillis() - startTime), TimeUnit.MILLISECONDS); | ||
| if (appInfoVO != null) { | ||
| batch.add(appInfoVO); | ||
| } else { | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| if (!batch.isEmpty()) { | ||
| persistentAppInfo(batch); | ||
| } | ||
| } | ||
|
|
||
| public synchronized void addAppInfo(AppInfoVO appInfoVO) { | ||
| cachedAppInfoMap.put(appInfoVO.getAppId(), appInfoVO); | ||
| if (!appInfoQueue.offer(appInfoVO)) { | ||
| LOG.warn( | ||
| "add app info to queue, appId: {}, but queue is full, size: {}", | ||
| appInfoVO.getAppId(), | ||
| appInfoQueue.size()); | ||
| } | ||
| } | ||
|
|
||
| public void loadAppInfo() { | ||
| HadoopFileReader hadoopFileReader = null; | ||
| try { | ||
| hadoopFileReader = new HadoopFileReader(path, this.conf.getHadoopConf()); | ||
| // read last N bytes, make sure to read the last cachedAppInfoSize AppInfoVOs | ||
| long readSize = cachedAppInfoSize * 1024L; | ||
| long fileSize = hadoopFileReader.getFileLen(); | ||
| if (fileSize < readSize) { | ||
| readSize = fileSize; | ||
| } | ||
| long offset = fileSize - readSize; | ||
| byte[] data = hadoopFileReader.read(offset, (int) readSize); | ||
| String dataStr = new String(data, StandardCharsets.UTF_8); | ||
| String[] lines = dataStr.split("\n"); | ||
| for (String line : lines) { | ||
| if (line.isEmpty()) { | ||
| continue; | ||
| } | ||
| try { | ||
| AppInfoVO appInfoVO = objectMapper.readValue(line, AppInfoVO.class); | ||
| cachedAppInfoMap.put(appInfoVO.getAppId(), appInfoVO); | ||
| } catch (JsonProcessingException e) { | ||
| LOG.warn("Skipping invalid JSON line: {}. Error: {}", line, e.getMessage(), e); | ||
| } | ||
| } | ||
| } catch (IllegalStateException e) { | ||
| LOG.error( | ||
| "load app info from {} failed, got IllegalStateException: {}", path, e.getMessage()); | ||
| } catch (Exception e) { | ||
| LOG.error("load app info from {} failed, got Exception: {}", path, e.getMessage()); | ||
| } finally { | ||
| if (hadoopFileReader != null) { | ||
| try { | ||
| hadoopFileReader.close(); | ||
| } catch (IOException e) { | ||
| LOG.error("close hadoopFileReader from {} failed, Exception: {}", path, e.getMessage()); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public void persistentAppInfo(List<AppInfoVO> appInfos) { | ||
| try { | ||
| for (AppInfoVO appInfoVO : appInfos) { | ||
| String jsonString = objectMapper.writeValueAsString(appInfoVO); | ||
| hadoopFileWriter.writeData(jsonString.getBytes(StandardCharsets.UTF_8)); | ||
| hadoopFileWriter.writeData( | ||
| "\n" | ||
| .getBytes( | ||
| StandardCharsets.UTF_8)); // Add a newline character to separate JSON objects | ||
| } | ||
| hadoopFileWriter.flush(); | ||
| } catch (IOException e) { | ||
| LOG.error("write data failed, Exception: {}", e.getMessage()); | ||
| } | ||
| } | ||
|
|
||
| public void close() { | ||
| isRunning = false; | ||
| try { | ||
| hadoopFileWriter.close(); | ||
| } catch (Exception e) { | ||
| LOG.error("close failed, Exception: {}", e.getMessage()); | ||
| } | ||
| } | ||
|
|
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| public List<AppInfoVO> getAppInfos(int currentAppSize) { | ||
| // get the last size AppInfoVOs | ||
| int needSize = Math.max(0, dashboardAppInfoMaxSize - currentAppSize); | ||
| if (cachedAppInfoMap.size() < needSize) { | ||
| return new ArrayList<>(cachedAppInfoMap.values()); | ||
| } | ||
| return new ArrayList<>(cachedAppInfoMap.values()) | ||
| .subList(cachedAppInfoMap.size() - needSize, cachedAppInfoMap.size()); | ||
| } | ||
|
|
||
| public int getAppInfosSize(int currentAppSize) { | ||
| int needSize = Math.max(0, dashboardAppInfoMaxSize - currentAppSize); | ||
| return Math.min(cachedAppInfoMap.size(), needSize); | ||
| } | ||
|
|
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| public static CoordinatorAppHistoryManager create(CoordinatorConf conf) { | ||
| if (conf.getBoolean(CoordinatorConf.COORDINATOR_APP_HISTORY_ENABLE)) { | ||
| try { | ||
| return new CoordinatorAppHistoryManager(conf); | ||
| } catch (Exception e) { | ||
| LOG.error("create app history manager failed, Exception: {}", e.getMessage()); | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
| } |
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