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</header> - - <article class="post-content"> - <blockquote> - <p><em>æè¦</em>ï¼æ¥åï¼eBayå ¬å¸éé宣å¸æ£å¼åå¼æºä¸çæ¨åºå®æ¶åå¸å¼Hadoopæ°æ®å®å ¨æ¹æ¡ - Apache Eagleï¼ä½ä¸ºä¸å¥æ¨å¨æä¾é«æåå¸å¼çæµå¼çç¥å¼æï¼å¹¶éææºå¨å¦ä¹ 对ç¨æ·è¡ä¸ºå»ºç«Profile以å®æ¶æºè½å°ä¿æ¤Hadoopçæç³»ç»ä¸å¤§æ°æ®å®å ¨ç解å³æ¹æ¡ã</p> -</blockquote> - -<p>æ¥åï¼eBayå ¬å¸éé宣å¸æ£å¼åå¼æºä¸çæ¨åºåå¸å¼å®æ¶å®å ¨çæ§æ¹æ¡ ï¼ Apache Eagle (http://goeagle.io)ï¼è¯¥é¡¹ç®å·²äº2015å¹´10æ26æ¥æ£å¼å å ¥Apache æ为åµåå¨é¡¹ç®ãApache Eagleæä¾ä¸å¥é«æåå¸å¼çæµå¼çç¥å¼æï¼å ·æé«å®æ¶ãå¯ä¼¸ç¼©ãææ©å±ã交äºå好çç¹ç¹ï¼åæ¶éææºå¨å¦ä¹ 对ç¨æ·è¡ä¸ºå»ºç«Profile以å®ç°æºè½å®æ¶å°ä¿æ¤Hadoopçæç³»ç»ä¸å¤§æ°æ®çå®å ¨ã</p> - -<h2 id="section">èæ¯</h2> -<p>éç大æ°æ®çåå±ï¼è¶æ¥è¶å¤çæåä¼ä¸æè ç»ç»å¼å§éåæ°æ®é©±å¨åä¸çè¿ä½æ¨¡å¼ãå¨eBayï¼æ们æ¥ææ°ä¸åå·¥ç¨å¸ãåæå¸åæ°æ®ç§å¦å®¶ï¼ä»ä»¬æ¯å¤©è®¿é®åææ°PB级çæ°æ®ï¼ä»¥ä¸ºæ们çç¨æ·å¸¦æ¥æ ä¸ä¼¦æ¯çä½éªãå¨å ¨çä¸å¡ä¸ï¼æ们ä¹å¹¿æ³å°å©ç¨æµ·é大æ°æ®æ¥è¿æ¥æ们æ°ä»¥äº¿è®¡çç¨æ·ã</p> - -<p>è¿å¹´æ¥ï¼Hadoopå·²ç»éæ¸æ为大æ°æ®åæé¢åæå欢è¿ç解å³æ¹æ¡ï¼eBayä¹ä¸ç´å¨ä½¿ç¨Hadoopææ¯ä»æ°æ®ä¸ææä»·å¼ï¼ä¾å¦ï¼æ们éè¿å¤§æ°æ®æé«ç¨æ·çæç´¢ä½éªï¼è¯å«åä¼åç²¾å广åææ¾ï¼å å®æ们ç产åç®å½ï¼ä»¥åéè¿ç¹å»æµåæ以ç解ç¨æ·å¦ä½ä½¿ç¨æ们çå¨çº¿å¸åºå¹³å°çã</p> - 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<li><strong>å¼æº</strong>ï¼Eagleä¸ç´æ ¹æ®å¼æºçæ åå¼åï¼å¹¶æ建äºè¯¸å¤å¤§æ°æ®é¢åçå¼æºäº§åä¹ä¸ï¼å æ¤æ们å³å®ä»¥Apache许å¯è¯å¼æºEagleï¼ä»¥åé¦ç¤¾åºï¼åæ¶ä¹æå¾ è·å¾ç¤¾åºçåé¦ãåä½ä¸æ¯æã</li> -</ul> - -<h2 id="eagle">Eagleæ¦è§</h2> - -<p><img src="/images/posts/eagle-group.png" alt="" /></p> - -<h4 id="data-collection-and-storage">æ°æ®æµæ¥å ¥ååå¨ï¼Data Collection and Storageï¼</h4> -<p>Eagleæä¾é«åº¦å¯æ©å±çç¼ç¨APIï¼å¯ä»¥æ¯æå°ä»»ä½ç±»åçæ°æ®æºéæå°Eagleççç¥æ§è¡å¼æä¸ãä¾å¦ï¼å¨Eagle HDFS 审计äºä»¶ï¼Auditï¼çæ§æ¨¡åä¸ï¼éè¿Kafkaæ¥å®æ¶æ¥æ¶æ¥èªNamenode Log4j Appender æè Logstash Agent æ¶éçæ°æ®ï¼å¨Eagle Hive çæ§æ¨¡åä¸ï¼éè¿YARN API æ¶éæ£å¨è¿è¡JobçHive æ¥è¯¢æ¥å¿ï¼å¹¶ä¿è¯æ¯è¾é«çå¯ä¼¸ç¼©æ§å容éæ§ã</p> - -<h4 id="data-processing">æ°æ®å®æ¶å¤çï¼Data Processingï¼</h4> - -<p><strong>æµå¤çAPIï¼Stream Processing APIï¼Eagle</strong> æä¾ç¬ç«äºç©çå¹³å°èé«åº¦æ½è±¡çæµå¤çAPIï¼ç®åé»è®¤æ¯æApache Stormï¼ä½æ¯ä¹å 许æ©å±å°å ¶ä»ä»»ææµå¤çå¼æï¼æ¯å¦Flink æè Samzaçã该å±æ½è±¡å 许å¼åè å¨å®ä¹çæ§æ°æ®å¤çé»è¾æ¶ï¼æ éå¨ç©çæ§è¡å±ç»å®ä»»ä½ç¹å®æµå¤çå¹³å°ï¼èåªééè¿å¤ç¨ãæ¼æ¥åç»è£ ä¾å¦æ°æ®è½¬æ¢ãè¿æ»¤ãå¤é¨æ°æ®Joinçç»ä»¶ï¼ä»¥å®ç°æ»¡è¶³éæ±çDAGï¼æåæ ç¯å¾ï¼ï¼åæ¶ï¼å¼åè ä¹å¯ä»¥å¾å®¹æå°ä»¥ç¼ç¨å°æ¹å¼å°ä¸å¡é»è¾æµç¨åEagle çç¥å¼ææ¡æ¶éæèµ·æ¥ãEagleæ¡æ¶å é¨ä¼å°æè¿°ä¸å¡é»è¾çDAGç¼è¯æåºå±æµå¤çæ¶æçåçåºç¨ï¼ä¾å¦Apache Storm Topology çï¼ä»äºå®ç°å¹³å°çç¬ç«ã</p> - -<p><strong>以ä¸æ¯ä¸ä¸ªEagleå¦ä½å¤çäºä»¶ååè¦ç示ä¾ï¼</strong></p> - -<pre><code>StormExecutionEnvironment env = ExecutionEnvironmentFactory.getStorm(config); // storm env -StreamProducer producer = env.newSource(new KafkaSourcedSpoutProvider().getSpout(config)).renameOutputFields(1) // declare kafka source - .flatMap(new AuditLogTransformer()) // transform event - .groupBy(Arrays.asList(0)) // group by 1st field - .flatMap(new UserProfileAggregatorExecutor()); // aggregate one-hour data by user - .alertWithConsumer(âuserActivityâ,âuserProfileExecutorâ) // ML policy evaluation -env.execute(); // execute stream processing and alert -</code></pre> - -<p><strong>åè¦æ¡æ¶ï¼Alerting Frameworkï¼Eagle</strong>åè¦æ¡æ¶ç±æµå æ°æ®APIãçç¥å¼ææå¡æä¾APIãçç¥Partitioner API 以åé¢è¦å»éæ¡æ¶çç»æ:</p> - -<ul> - <li><strong>æµå æ°æ®API</strong> å 许ç¨æ·å£°æäºä»¶çSchemaï¼å æ¬äºä»¶ç±åªäºå±æ§ææãæ¯ä¸ªå±æ§çç±»åï¼ä»¥åå½ç¨æ·é ç½®çç¥æ¶å¦ä½å¨è¿è¡æ¶å¨æ解æå±æ§çå¼çã</li> - <li><strong>çç¥å¼ææå¡æä¾API</strong> å 许å¼åè å¾å®¹æå°ä»¥æ件çå½¢å¼æ©å±æ°ççç¥å¼æãWSO2 Siddhi CEP å¼ææ¯Eagle ä¼å é»è®¤æ¯æççç¥å¼æï¼åæ¶æºå¨å¦ä¹ ç®æ³ä¹å¯ä½ä¸ºå¦ä¸ç§çç¥å¼ææ§è¡ã</li> - <li> - <p><strong>æ©å±æ§</strong> Eagleççç¥å¼ææå¡æä¾APIå è®¸ä½ æå ¥æ°ççç¥å¼æ</p> - - <pre><code> public interface PolicyEvaluatorServiceProvider { - public String getPolicyType(); // literal string to identify one type of policy - public Class<? extends PolicyEvaluator> getPolicyEvaluator(); // get policy evaluator implementation - public List<Module> getBindingModules(); // policy text with json format to object mapping - } - public interface PolicyEvaluator { - public void evaluate(ValuesArray input) throws Exception; // evaluate input event - public void onPolicyUpdate(AlertDefinitionAPIEntity newAlertDef); // invoked when policy is updated - public void onPolicyDelete(); // invoked when policy is deleted - } -</code></pre> - </li> - <li><strong>çç¥Partitioner API</strong> å 许çç¥å¨ä¸åçç©çèç¹ä¸å¹¶è¡æ§è¡ãä¹å è®¸ä½ èªå®ä¹çç¥Partitionerç±»ãè¿äºåè½ä½¿å¾çç¥åäºä»¶å®å ¨ä»¥åå¸å¼çæ¹å¼æ§è¡ã</li> - <li> - <p><strong>å¯ä¼¸ç¼©æ§</strong> Eagle éè¿æ¯æçç¥çååºæ¥å£æ¥å®ç°å¤§éççç¥å¯ä¼¸ç¼©å¹¶åå°è¿è¡</p> - - <pre><code> public interface PolicyPartitioner extends Serializable { - int partition(int numTotalPartitions, String policyType, String policyId); // method to distribute policies - } -</code></pre> - - <p><img src="/images/posts/policy-partition.png" alt="" /></p> - - <blockquote> - <p>å¯ä¼¸ç¼©çEagleçç¥æ§è¡æ¡æ¶</p> - </blockquote> - </li> -</ul> - -<p><strong>æºå¨å¦ä¹ 模å:</strong> -Eagle æ¯ææ ¹æ®ç¨æ·å¨Hadoopå¹³å°ä¸åå²ä½¿ç¨è¡ä¸ºä¹ æ¯æ¥å®ä¹è¡ä¸ºæ¨¡å¼æç¨æ·Profileçè½åãæ¥æäºè¿ä¸ªåè½ï¼ä¸éè¦å¨ç³»ç»ä¸é¢å 设置åºå®ä¸´çå¼çæ åµä¸ï¼ä¹å¯ä»¥å®ç°æºè½å°æ£æµåºå¼å¸¸çè¡ä¸ºãEagleä¸ç¨æ·Profileæ¯éè¿æºå¨å¦ä¹ ç®æ³çæï¼ç¨äºå¨ç¨æ·å½åå®æ¶è¡ä¸ºæ¨¡å¼ä¸å ¶å¯¹åºçåå²æ¨¡å模å¼åå¨ä¸å®ç¨åº¦çå·®å¼æ¶è¯å«ç¨æ·è¡ä¸ºæ¯å¦ä¸ºå¼å¸¸ãç®åï¼Eagle å ç½®æä¾ä»¥ä¸ä¸¤ç§ç®æ³æ¥æ£æµå¼å¸¸ï¼åå«ä¸ºç¹å¾å¼å解ï¼Eigen-Value Decompositionï¼å å¯åº¦ä¼°è®¡ï¼Density Estimationï¼ãè¿äºç®æ³ä»HDFS 审计æ¥å¿ä¸è¯»åæ°æ®ï¼å¯¹æ°æ®è¿è¡åå²ã审æ¥ã交ååæï¼å¨ææ§å°ä¸ºæ¯ä¸ªç¨æ·ä¾æ¬¡å建Profile è¡ä¸ºæ¨¡åãä¸æ¦æ¨¡åçæï¼Eagleçå®æ¶æµçç¥å¼æè½å¤è¿ä¹å®æ¶å°è¯å«åºå¼å¸¸ï¼å辨å½åç¨æ·çè¡ä¸ºå¯ççæè ä¸ä»ä»¬çåå²è¡ä¸ºæ¨¡åä¸ç¸ç¬¦ã</p> - 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-<p><img src="/images/posts/density-estimation.png" alt="" /></p> - -<blockquote> - <p>å±ç¤ºåä¸ç»´åº¦ä¸ç¨æ·è¡ä¸ºç´æ¹å¾</p> -</blockquote> - -<p><strong>ç¹å¾å¼å解ç®æ³ï¼Eigen-Value Decompositionï¼</strong> -该ç®æ³ä¸ï¼æ们认为çæç¨æ·Profileç主è¦ç®çæ¯ä¸ºäºä»ä¸åç°æä»·å¼çç¨æ·è¡ä¸ºæ¨¡å¼ã为äºå®ç°è¿ä¸ªç®çï¼æ们å¯ä»¥èè对ç¹å¾ä¾æ¬¡è¿è¡ç»åï¼ç¶åè§å¯ä»ä»¬ç¸äºä¹é´æ¯å¦ä½å½±åçãå½æ°æ®éé常巨大æ¶ï¼æ£å¦é常æ们æéå°çåºæ¯ï¼ç±äºæ£å¸¸æ¨¡å¼çæ°éé常ä¹å¤ï¼ä»¥è³äºç¹å¾éçå¼å¸¸ç模å¼å¾å®¹æ被忽è§ãç±äºæ£å¸¸çè¡ä¸ºæ¨¡å¼é常å¤äºé常ä½ç»´çå空é´å ï¼å æ¤æ们ä¹è®¸å¯ä»¥éè¿éä½æ°æ®éç维度æ¥æ´å¥½çç解ç¨æ·ççæ£çè¡ä¸ºæ¨¡å¼ã该æ¹æ³åæ ·å¯ä»¥å¯¹äºè®ç»æ°æ®éè¿è¡éåªãæ ¹æ®å¯¹å¤§éç¨æ·ç¹å¾æ°æ®æ¹å·®çè¿è¡è¿ç®ï¼é常å¨æ们çç¨ä¾åºæ¯ä¸éåæ¹å·®ä¸º95%ä½ä¸ºåºåï¼æ们å¯ä»¥å¾å°æ¹å·®ä¸º95%ç主æåçæ°é为kï¼å æ¤æ们å°åk个主æå认为æ¯ç¨æ·çæ£å¸¸å空é´ï¼èå©ä¸ç(n-k)个主æåå被è§ä¸ºå¼å¸¸å空é´ã</p> - -<p>å½çº¿å®æ¶å¼å¸¸æ£æµæ¶ï¼å¦æç¨æ·è¡ä¸ºæ¨¡å¼ä½äºæ£å¸¸å空é´éè¿ï¼å认为该è¡ä¸ºæ£å¸¸ï¼å¦åï¼å¦æç¨æ·è¡ä¸ºæ¨¡å¼ä½äºå¼å¸¸å空é´éè¿ï¼åä¼ç«å³æ¥è¦ï¼å 为æ们ç¸ä¿¡é常ç¨æ·è¡ä¸ºä¸è¬åºè¯¥ä½äºæ£å¸¸å空é´å ãè³äºå¦ä½è®¡ç®ç¨æ·å½åè¡ä¸ºæ¥è¿æ£å¸¸è¿æ¯å¼å¸¸å空é´ï¼æ们éç¨çæ¯æ¬§æ°è·ç¦»æ³ï¼Euclidian distance methodï¼ã</p> - -<p><img src="/images/posts/eigen-decomposition.png" alt="" /></p> - -<blockquote> - <p>å±ç¤ºéè¦çç¨æ·è¡ä¸ºæ¨¡å¼æå</p> -</blockquote> - -<p><strong>Eagle æå¡</strong></p> - -<p><strong>çç¥ç®¡çå¨</strong> Eagleçç¥ç®¡çå¨æä¾äº¤äºå好çç¨æ·çé¢åREST API ä¾ç¨æ·è½»æ¾å°å®ä¹å管ççç¥ï¼ä¸ååªéå æ¬¡é¼ æ ç¹å»èå·²ãEagleçç¨æ·çé¢ä½¿å¾çç¥ç管çãææå æ°æ®çæ è¯åå¯¼å ¥ãHDFSæHive çèµæºæµè§ä»¥åé¢è¦ä»ªè¡¨çåè½é½é常æäºä½¿ç¨ã</p> - -<p>Eagle çç¥å¼æé»è®¤æ¯æWSO2çSiddhi CEPå¼æåæºå¨å¦ä¹ å¼æï¼ä»¥ä¸æ¯å 个åºäºSiddi CEPççç¥ç¤ºä¾</p> - -<ul> - <li> - <p>åä¸äºä»¶æ§è¡çç¥ï¼ç¨æ·è®¿é®Hiveä¸çæææ°æ®åï¼</p> - - <pre><code> from hiveAccessLogStream[sensitivityType=='PHONE_NUMBER'] select * insert into outputStream; -</code></pre> - </li> - <li> - <p>åºäºçªå£ççç¥ï¼ç¨æ·å¨10åéå 访é®ç®å½ /tmp/private å¤ä½ 5次ï¼</p> - - <pre><code> hdfsAuditLogEventStream[(src == '/tmp/private')]#window.externalTime(timestamp,10 min) select user, count(timestamp) as aggValue group by user having aggValue >= 5 insert into outputStream; -</code></pre> - </li> -</ul> - -<p><strong>æ¥è¯¢æå¡ï¼Query Serviceï¼</strong> Eagle æä¾ç±»SQLçREST APIç¨æ¥å®ç°é对海éæ°æ®éç综å计ç®ãæ¥è¯¢ååæçè½åï¼æ¯æä¾å¦è¿æ»¤ãèåãç´æ¹è¿ç®ãæåºãtopãç®æ¯è¡¨è¾¾å¼ä»¥åå页çãEagleä¼å æ¯æHBase ä½ä¸ºå ¶é»è®¤æ°æ®åå¨ï¼ä½æ¯åæ¶ä¹æ¯æåºJDBCçå ³ç³»åæ°æ®åºãç¹å«æ¯å½éæ©ä»¥HBaseä½ä¸ºåå¨æ¶ï¼Eagle便åçæ¥æäºHBaseåå¨åæ¥è¯¢æµ·éçæ§æ°æ®çè½åï¼Eagle æ¥è¯¢æ¡æ¶ä¼å°ç¨æ·æä¾çç±»SQLæ¥è¯¢è¯æ³æç»ç¼è¯æ为HBase åççFilter 对象ï¼å¹¶æ¯æéè¿HBase Coprocessorè¿ä¸æ¥æåååºé度ã</p> - -<pre><code>query=AlertDefinitionService[@dataSource="hiveQueryLog"]{@policyDef}&pageSize=100000 -</code></pre> - -<h2 id="eagleebay">Eagleå¨eBayç使ç¨åºæ¯</h2> -<p>ç®åï¼Eagleçæ°æ®è¡ä¸ºçæ§ç³»ç»å·²ç»é¨ç½²å°ä¸ä¸ªæ¥æ2500å¤ä¸ªèç¹çHadoopé群ä¹ä¸ï¼ç¨ä»¥ä¿æ¤æ°ç¾PBæ°æ®çå®å ¨ï¼å¹¶æ£è®¡åäºä»å¹´å¹´åºä¹åæ©å±å°å ¶ä»ä¸å个Hadoopé群ä¸ï¼ä»èè¦çeBay ææ主è¦Hadoopç10000å¤å°èç¹ãå¨æ们çç产ç¯å¢ä¸ï¼æ们已é对HDFSãHive çé群ä¸çæ°æ®é ç½®äºä¸äºåºç¡çå®å ¨çç¥ï¼å¹¶å°äºå¹´åºä¹åä¸æå¼å ¥æ´å¤ççç¥ï¼ä»¥ç¡®ä¿éè¦æ°æ®çç»å¯¹å®å ¨ãç®åï¼Eagleççç¥æ¶µçå¤ç§æ¨¡å¼ï¼å æ¬ä»è®¿é®æ¨¡å¼ãé¢ç¹è®¿é®æ°æ®éï¼é¢å®ä¹æ¥è¯¢ç±»åãHive 表ååãHBase 表以ååºäºæºå¨å¦ä¹ 模åçæçç¨æ·Profileç¸å ³çææçç¥çãåæ¶ï¼æ们ä¹æ广æ³ççç¥æ¥é²æ¢æ°æ®ç丢失ãæ°æ®è¢«æ·è´å°ä¸å®å ¨å°ç¹ãæææ°æ®è¢«æªææåºå访é®çãEagleçç¥å®ä¹ä¸æ大ççµæ´»æ§åæ©å±æ§ä½¿å¾æ们æªæ¥å¯ä»¥è½»æå°ç»§ç»æ©å±æ´å¤æ´å¤æççç¥ä»¥æ¯ææ´å¤å¤å åç ç¨ä¾åºæ¯ã</p> - -<h2 id="section-1">åç»è®¡å</h2> -<p>è¿å»ä¸¤å¹´ä¸ï¼å¨eBay é¤äºè¢«ç¨äºæ°æ®è¡ä¸ºçæ§ä»¥å¤ï¼Eagle æ ¸å¿æ¡æ¶è¿è¢«å¹¿æ³ç¨äºçæ§èç¹å¥åº·ç¶åµãHadoopåºç¨æ§è½ææ ãHadoop æ ¸å¿æå¡ä»¥åæ´ä¸ªHadoopé群çå¥åº·ç¶åµç诸å¤é¢åãæ们è¿å»ºç«ä¸ç³»åçèªå¨åæºå¶ï¼ä¾å¦èç¹ä¿®å¤çï¼å¸®å©æ们平å°é¨é¨æ大å¾èçäºæ们人工å³åï¼å¹¶ææå°æåäºæ´ä¸ªé群èµæºå°å©ç¨çã</p> - -<p>以ä¸æ¯æ们ç®åæ£å¨å¼åä¸å°ä¸äºç¹æ§ï¼</p> - -<ul> - <li>æ©å±æºå¨å¦ä¹ 模å对HiveåHBaseæ¯æ</li> - <li>æä¾é«åº¦å¯æ©å±çAPIï¼ä»¥æ¹ä¾¿éç®åä¸ç广æ³ä½¿ç¨çå ¶ä»çæ§é¢è¦å¹³å°æè å·¥å ·ï¼å¦GangliaåNagiosçï¼åæ¶æ¯ææææ°æ®çå¯¼å ¥ï¼å¦ä¸Dataguise éæçã</li> - <li>æ¤å¤ï¼æ们æ£å¨ç§¯ææ´çå ¶ä»Hadoop é群çæ§æ¨¡åï¼ææå¨åç»åå¸ä¸å¼æºç»ç¤¾åºï¼ä¾å¦ - <ul> - <li>HBase çæ§</li> - <li>Hadoop ä½ä¸æ§è½çæ§</li> - <li>Hadoop èç¹çæ§</li> - </ul> - </li> -</ul> - -<h2 id="section-2">å ³äºä½è </h2> -<p><a href="https://github.com/haoch";>é浩</a>ï¼Apache Eagle Committer å PMC æåï¼eBay åæå¹³å°åºç¡æ¶æé¨é¨é«çº§è½¯ä»¶å·¥ç¨å¸ï¼è´è´£Eagleç产å设计ãææ¯æ¶æãæ ¸å¿å®ç°ä»¥åå¼æºç¤¾åºæ¨å¹¿çã</p> - -<p>æ谢以ä¸æ¥èªApache Eagle社åºåeBayå ¬å¸çèåä½è 们对æ¬æçè´¡ç®ï¼</p> - -<ul> - <li><a href="https://github.com/yonzhang";>å¼ å</a>ï¼Apache Eagle CommitteråPMCï¼eBay èµæ·±æ¶æå¸</li> - <li><a href="https://github.com/sunlibin";>åç«æ</a>ï¼Apache Eagle CommitteråPMCï¼eBay 软件工ç¨å¸</li> - <li><a href="https://github.com/zombiej";>èåéº</a>ï¼Apache Eagle CommitteråPMCï¼eBay 软件工ç¨å¸</li> - <li><a href="https://github.com/qingwen220";>èµµæ´é¯</a>ï¼Apache Eagle CommitteråPMCï¼eBay 软件工ç¨å¸</li> -</ul> - -<p>eBay åæå¹³å°åºç¡æ¶æé¨ï¼Analytics Data Infrastructureï¼æ¯eBayçå ¨çæ°æ®ååæåºç¡æ¶æé¨é¨ï¼è´è´£eBayå¨æ°æ®åºãæ°æ®ä»åºãHadoopãåå¡æºè½ä»¥åæºå¨å¦ä¹ çå个æ°æ®å¹³å°å¼åã管çç,æ¯æeBayå ¨çåé¨é¨è¿ç¨é«ç«¯çæ°æ®åæ解å³æ¹æ¡ä½åºåæ¶ææçä½ä¸å³çï¼ä¸ºéå¸å ¨ççä¸å¡ç¨æ·æä¾æ°æ®åæ解å³æ¹æ¡ã</p> - -<h2 id="section-3">åèèµæ</h2> - -<ul> - <li>Apache Eagle ææ¡£ï¼<a href="http://goeagle.io";>http://goeagle.io</a></li> - <li>Apache Eagle æºç ï¼<a href="http://github.com/apache/incubator-eagle";>http://github.com/apache/incubator-eagle</a></li> - <li>Apache Eagle 项ç®ï¼<a href="http://incubator.apache.org/projects/eagle.html";>http://incubator.apache.org/projects/eagle.html</a></li> -</ul> - -<h2 id="section-4">å¼ç¨é¾æ¥</h2> -<ul> - <li><strong>CSDN</strong>: <a href="http://www.csdn.net/article/2015-10-29/2826076";>http://www.csdn.net/article/2015-10-29/2826076</a></li> - <li><strong>OSCHINA</strong>: <a href="http://www.oschina.net/news/67515/apache-eagle";>http://www.oschina.net/news/67515/apache-eagle</a></li> - <li><strong>China Hadoop Summit</strong>: <a href="http://mp.weixin.qq.com/s?__biz=MzA4MTkyODIzMA==&mid=400298495&idx=1&sn=954031ba8065481c31a3464e2c8a26a5&scene=1&srcid=1102zgGQzedckCmNrfRwounA&uin=MjYyNzgwNDQwMA%3D%3D&key=04dce534b3b035efe14d53fcf6e7062a63179003551e59fad5cf8584703fcaa38779cc4c93cbf931c25f6b34cb2d7653&devicetype=iMac+MacBookPro11%2C3+OSX+OSX+10.10.5+build(14F1021)&version=11020201&lang=en&pass_ticket=TC%2Bod2ZeFnhmci%2Bi4%2BxTTVD6moUrNFX8RXppzoQSa%2BXO3C7evUDs6njeYbsYyCFD">http://mp.weixin.qq.com/s?â¦</a></li> - <li><strong>Apache Kylin</strong>: <a href="http://mp.weixin.qq.com/s?__biz=MzAwODE3ODU5MA==&mid=400287781&idx=1&sn=343b2b29a37f8ed53a7ecb0465faf515&scene=0&uin=MjYyNzgwNDQwMA%3D%3D&key=04dce534b3b035ef73f964362ac4c43d452ab1b208eb357c488dfcd7d69209e060cfe01e9b146752517d2096f6751370&devicetype=iMac+MacBookPro11%2C3+OSX+OSX+10.10.5+build(14F1021)&version=11020201&lang=en&pass_ticket=TC%2Bod2ZeFnhmci%2Bi4%2BxTTVD6moUrNFX8RXppzoQSa%2BXO3C7evUDs6njeYbsYyCFD">http://mp.weixin.qq.com/s?â¦</a></li> -</ul> - -<hr /> - -<p><em>æ¬ææ¥èªApache Eagleç½ç«ï¼<a href="http://goeagle.io";>http://goeagle.io</a>ï¼è½¬è½½è¯·æ³¨æåºå¤åæ¥æºã</em></p> - - </article> -</div> - - </div> - </div> - <!-- footer start --> -<div class="footerwrapper"> - <div class="container"> - <div class="row"> - <div class="col-md-12"><div style="margin-left:auto; margin-right:auto; text-align:center;font-size: 12px"> -<div> -</div> -<div> -<a href="http://www.apache.org";> -<img id="asf-logo" alt="Apache Software Foundation" src="/images/apache-logo-small.gif"> -</a> -</div> -<div> -Copyright © 2015 <a href="http://www.apache.org";>The Apache Software Foundation</a>, Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0";>Apache License, Version 2.0</a>. -</div> -<div> -Apache Eagle, Eagle, Apache Hadoop, Hadoop, Apache HBase, HBase, Apache Hive, Hive, Apache Ambari, Ambari, Apache Spark, Spark, Apache Kafka, Kafka, Apache Storm, Storm, Apache Maven, Maven, Apache Tomcat, Tomcat, Apache Derby, Derby, Apache Cassandra, Cassandra, Apache ZooKeeper, ZooKeeper, Apache, the Apache feather logo, and the Apache project logo are trademarks of The Apache Software Foundation. -</div> - </div></div> - </div> - </div> -</div> -<!-- footer end --> - -<!-- JavaScripts --> -<script src="/js/jquery-1.11.1.min.js"></script> -<script src="/js/jquery.singlePageNav.js"></script> -<script src="/js/jquery.flexslider.js"></script> -<script src="/js/modernizr.min.js"></script> -<script src="/js/svg.js"></script> -<script> - /************** FlexSlider *********************/ - $('.flexslider').flexslider({ - animation: "fade", - directionNav: false - }); -</script> - </body> -</html> \ No newline at end of file http://git-wip-us.apache.org/repos/asf/eagle/blob/d6fed677/eagle-site/about.md ---------------------------------------------------------------------- diff --git a/eagle-site/about.md b/eagle-site/about.md deleted file mode 100644 index fca4517..0000000 --- a/eagle-site/about.md +++ /dev/null @@ -1,11 +0,0 @@ ---- -layout: page -title: About -permalink: /about/ ---- - -This is the base Jekyll theme. You can find out more info about customizing your Jekyll theme, as well as basic Jekyll usage documentation at [jekyllrb.com](http://jekyllrb.com/) - -You can find the source code for the Jekyll new theme at: [github.com/jglovier/jekyll-new](https://github.com/jglovier/jekyll-new) - -You can find the source code for Jekyll at [github.com/jekyll/jekyll](https://github.com/jekyll/jekyll) \ No newline at end of file http://git-wip-us.apache.org/repos/asf/eagle/blob/d6fed677/eagle-site/ambari-plugin-install.md ---------------------------------------------------------------------- diff --git a/eagle-site/ambari-plugin-install.md b/eagle-site/ambari-plugin-install.md deleted file mode 100644 index f5d1df7..0000000 --- a/eagle-site/ambari-plugin-install.md +++ /dev/null @@ -1,51 +0,0 @@ ---- -layout: doc -title: "Install Apache Eagle Ambari Plugin" -permalink: /docs/ambari-plugin-install.html ---- - -Assume Apache Eagle (called Eagle in the following) package has been copied and exacted under /usr/hdp/current/eagle. - -> **WARNING**: the following instructions work in sandbox currently. - - -### Pre-requisites - -1. Create a Kafka[^KAFKA] topic if you have not. Here is an example command. - - $ /usr/hdp/current/kafka-broker/bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic sandbox_hdfs_audit_log - -2. Stream HDFS log data to Kafka, and refer to [here](/docs/import-hdfs-auditLog.html) on how to do it . - -### Installation Steps - -1. Start dependent services Storm[^STORM], Spark[^SPARK], HBase[^HBASE] & Kafka via Ambari[^AMBARI]. - -2. Install Eagle Ambari plugin - - $ /usr/hdp/current/eagle/bin/eagle-ambari.sh install - -3. Restart [Ambari](http://127.0.0.1:8000/) click on disable and enable Ambari back. - -4. Add Eagle Service to Ambari. Click on "Add Service" on Ambari Main page - -  -  - -5. Add Policies and meta data required by running the below script. - - $ cd <eagle-home> - $ examples/sample-sensitivity-resource-create.sh - $ examples/sample-policy-create.sh - - - ---- - -#### *Footnotes* - -[^HBASE]:*Apache HBase.* -[^AMBARI]:*All mentions of "ambari" on this page represent Apache Ambari.* -[^SPARK]:*Apache Spark.* -[^KAFKA]:*All mentions of "kafka" on this page represent Apache Kafka.* -[^STORM]:*Apache Storm.* http://git-wip-us.apache.org/repos/asf/eagle/blob/d6fed677/eagle-site/application-configuration.md ---------------------------------------------------------------------- diff --git a/eagle-site/application-configuration.md b/eagle-site/application-configuration.md deleted file mode 100644 index 5619e2a..0000000 --- a/eagle-site/application-configuration.md +++ /dev/null @@ -1,85 +0,0 @@ ---- -layout: doc -title: "Application Configuration" -permalink: /docs/configuration.html ---- - -Apache Eagle (called Eagle in the following) requires you to create a configuration file under `$EAGLE_HOME/conf/` for each application. Basically, there are some common properties shared, e.g., envContextConfig, eagleProps, and dynamicConfigSource. While dataSourceConfig differs from application to application. - -In this page we take the following two application as examples - -* HDFS Audit Log Configuration -* Hive[^HIVE] Query Log Configuration - - -### HDFS Audit Log Configuration ---- - - Class ||| Property Name ||| Description - -----------------||| ------------- ||| ----------- - envContextConfig ||| env ||| currently only Storm[^STORM] is supported. - ||| mode ||| local or cluster - ||| topologyName ||| in the format {site}-{topology-name} - ||| stormConfigFile ||| a storm configuration file for overriding some Storm properties - ||| parallelismConfig ||| parallelism for both Kafka[^KAFKA] consumer and alert executors -dataSourceConfig ||| **topic** ||| Kafka topic for audit log streaming, make sure it exists - ||| **zkConnection*** |||ZooKeeper[^ZOOKEEPER] connection string, you can also specify multiple hosts in the form hostname1:port1,hostname2:port2, ... - |||zkConnectionTimeoutMS ||| zookeeper connection timeout - ||| fetchSize ||| kafka maximal message fetching size, default value is 1048586 - ||| deserializerClass ||| org.apache.eagle.security.auditlog.HdfsAuditLogKafkaDeserializer - ||| transactionZKServers ||| ZooKeeper servers, you can also specify multiple hosts in the form hostname1,hostname2,hostname3 - ||| transactionZKPort ||| ZooKeeper connection port - ||| transactionZKRoot ||| ZooKeeper chroot path for Eagle - ||| consumerGroupId ||| only for hdfsAuditLog - ||| transactionStateUpdateMS ||| default is 2000 -alertExecutorConfigs ||| parallelism ||| default is 1 - ||| partitioner ||| default value is eagle.alert.policy.DefaultPolicyPartitioner - ||| needValidation ||| true or false -eagleProps ||| **site*** ||| site name, such as sandbox, datacenter1, datacenter2 - ||| dataSource ||| hdfsAuditLog - ||| dataJoinPollIntervalSec ||| time interval for retrieving data from HBase[^HBASE] - ||| **mailHost*** ||| SMTP server - ||| **mailSmtpPort*** ||| SMTP server port, default is 25 - ||| mailDebug ||| true or false - ||| eagleService.host ||| Tomcat[^TOMCAT] server host, default is localhost - ||| eagleService.port ||| 9099 - ||| eagleService.username ||| admin - ||| eagleService.password ||| secret - dynamicConfigSource ||| enabled ||| true or false, default is true - ||| initDelayMillis ||| default is 0 - ||| delayMillis ||| default is 30000 - - -<br /> - -### Hive Query Log Configuration ---- - - Class ||| Property Name ||| Description - -----------------||| ------------- ||| ----------- - envContextConfig ||| same as HDF ||| - dataSourceConfig ||| flavor ||| stormrunning - ||| **zkQuorum*** ||| ZooKeeper connection string, you can also specify multiple hosts in the form hostname1:port1,hostname2:port2,hostname3:port3 - ||| **zkRoot*** ||| ZooKeeper chroot path for Eagle to store data, default is /jobrunning - ||| zkSessionTimeoutMs ||| ZooKeeper session timeout, default is 15000 - ||| zkRetryTimes ||| ZooKeeper retry times, default is 3 - ||| zkRetryInterval ||| default is 2000 - ||| **RMEndPoints*** ||| yarn.resourcemanager.webapp.address. Default value is http://localhost:8088/ - ||| **HSEndPoint*** ||| mapreduce.jobhistory.webapp.address. Default values is http://localhost:19888/ - ||| partitionerCls ||| eagle.job.DefaultJobPartitionerImpl - alertExecutorConfigs ||| same as HDFS ||| - eagleProps ||| same as HDFS ||| - dynamicConfigSource ||| same as HDFS ||| - -<br /> - ---- - -#### *Footnotes* - -[^HBASE]:*Apache HBase.* -[^HIVE]:*All mentions of "hive" on this page represent Apache Hive.* -[^KAFKA]:*All mentions of "kafka" on this page represent Apache Kafka.* -[^STORM]:*All mentions of "storm" on this page represent Apache Storm.* -[^TOMCAT]:*Apache Tomcat.* -[^ZOOKEEPER]:*All mentions of "zookeeper" on this page represent Apache ZooKeeper.* http://git-wip-us.apache.org/repos/asf/eagle/blob/d6fed677/eagle-site/cloudera-integration.md ---------------------------------------------------------------------- diff --git a/eagle-site/cloudera-integration.md b/eagle-site/cloudera-integration.md deleted file mode 100644 index 52e0eda..0000000 --- a/eagle-site/cloudera-integration.md +++ /dev/null @@ -1,166 +0,0 @@ ---- -layout: doc -title: "Cloudera Integration" -permalink: /docs/cloudera-integration.html ---- - -*Since Eagle 0.4.0* - -Configuring Apache Eagle on Cloudera is very similar to configuring it on Hortonworks, but still there are some difference. -This tutorial is to address these issues before you continue to follow the tutorials originally prepared for Hortonworks. - -### Prerequisites - -To get Apache Eagle works on Cloudera, we need: - -* Zookeeper (installed through Cloudera Manager) -* Kafka (installed through Cloudera Manager) -* Storm (``0.9.x`` or ``0.10.x``, installed manually) -* Logstash (``2.X``, installed manually on NameNode) - - -### Kafka - -#### Configuration - -There are two configurations needed to be mentioned: - -* Open Cloudera Manager and open "kafka" configuration, then set ``âzookeeper Rootâ`` to ``â/â``. - -* If Kafka cannot be started successfully, check kafkaâs log. If stack trace shows: ``âjava.lang.OutOfMemoryError: Java heap spaceâ``. Increase heap size by setting ``"KAFKA_HEAP_OPTS"``in ``/bin/kafka-server-start.sh``. - -Example: - -~~~ - export KAFKA_HEAP_OPTS="-Xmx2G -Xms2G" -~~~ - - - -#### Verification - -- Step1: create a kafka topic (here I created a topic called âtestâ, which will be used in logstash configuration file to receive hdfsAudit log messages from Cloudera. - -~~~ -bin/kafka-topics.sh --create --zookeeper 127.0.0.1:2181 --replication-factor 1 --partitions 1 --topic test -~~~ - -- Step2: check if topic has been created successfully. - -~~~ -bin/kafka-topics.sh --list --zookeeper 127.0.0.1:2181 -~~~ - -this command will show all created topics. - -- Step3: open two terminals, start âproducerâ and âconsumerâ separately. - -~~~ -/usr/bin/kafka-console-producer --broker-list hostname:9092 --topic test -/usr/bin/kafka-console-consumer --zookeeper hostname:2181 --topic test -~~~ - -- Step4: type in some message in producer. If consumer can receive the messages sent from producer, then kafka is working fine. Otherwise please check the configuration and logs to identify the root cause of issues. - - - -### Logstash - -#### Installation - -You can follow [logstash online doc](https://www.elastic.co/downloads/logstash) to download and install logstash on your machine: - -Or you can install it through ``yum`` if you are using centos: - -- download and install the public signing key: - -~~~ -rpm --import https://packages.elastic.co/GPG-KEY-elasticsearch -~~~ - -- Add the following lines in ``/etc/yum.repos.d/`` directory in a file with a ``.repo`` suffix, for example ``logstash.repo``. - -~~~ -[logstash-2.3] -name=Logstash repository for 2.3.x packages -baseurl=https://packages.elastic.co/logstash/2.3/centos -gpgcheck=1 -gpgkey=https://packages.elastic.co/GPG-KEY-elasticsearch -enabled=1 -~~~ - -- Then install it using ``yum``: - -~~~ -yum install logstash -~~~ - -#### Create conf file - -Follow [Apache Eagle online documentation](https://github.com/apache/incubator-eagle/blob/branch-0.4/eagle-assembly/src/main/docs/logstash-kafka-conf.md) to create logstash configuration file for Apache Eagle. - -#### Start logstash - -~~~ -bin/logstash -f conf/first-pipeline.conf -~~~ - -#### Verification - -Open a terminal and start a kafka consumer to see if it can receive the messages sent by logstash, if there is no message, double check the configuration parameters in conf file. Otherwise logstash is all set. - -### Apache Storm -As Apache Storm is not in Clouderaâs stack, we need to install Storm manually. - -#### Installation - -Download Apache Storm from [here](http://storm.apache.org/downloads.html), the version you choose should be ``0.10.x`` or ``0.9.x`` release. -Then follow [Apache Storm online doc](http://storm.apache.org/releases/0.10.0/Setting-up-a-Storm-cluster.html)) to install Apache Storm on your cluster. - -In ``/etc/profile``, add this: - -~~~ -export PATH=$PATH:/opt/apache-storm-0.10.1/bin/ -~~~ - -save the profile and then type: - -~~~ -source /etc/profile -~~~ - -to make it work. - -#### Configuration - -In ``storm/conf/storm.yaml``, change the hostname to your own host. - -#### Start Apache Storm - -In Termial, type: - -~~~ -$: storm nimbus -$: storm supervisor -$: storm UI -~~~ - -#### Verification - -Open storm UI in your browser, default URL is : ``http://hostname:8080/index.html``. - -### Apache Eagle - -To download and install Apache Eagle, please refer to [Get Started with Sandbox.](http://eagle.incubator.apache.org/docs/quick-start.html) . - -One thing need to mention is: in ``â/bin/eagle-topology.shâ``, line 102: - -~~~ - storm_ui=http://localhost:8080 -~~~ - -If you are not using the default port number, change this to your own Storm UI url. - -I know it takes time to finish these configuration, but now it is time to have fun! -Just try ``HDFS Data Activity Monitoring`` with ``Demo`` listed in [HDFS Data Activity Monitoring.](http://eagle.incubator.apache.org/docs/hdfs-data-activity-monitoring.html) - http://git-wip-us.apache.org/repos/asf/eagle/blob/d6fed677/eagle-site/community.md ---------------------------------------------------------------------- diff --git a/eagle-site/community.md b/eagle-site/community.md deleted file mode 100644 index 0ea6358..0000000 --- a/eagle-site/community.md +++ /dev/null @@ -1,95 +0,0 @@ ---- -layout: doc -title: "Apache Eagle Community" -permalink: /docs/community.html ---- -### Mailing Lists - -|Name|||||Email|||||Subscribe|Unsubscribe|Archive| -|----|||||-----|||||---------|-----------|-------| -| User Mailling List|||||[[email protected]](mailto:[email protected])|||||[subscribe](mailto:[email protected])|[unsubscribe](mailto:[email protected])| [eagle-user](http://mail-archives.apache.org/mod_mbox/eagle-user/)| -| Dev Mailling List|||||[[email protected]](mailto:[email protected])|||||[subscribe](mailto:[email protected])|[unsubscribe](mailto:[email protected])| [eagle-dev](http://mail-archives.apache.org/mod_mbox/eagle-dev/)| -| Issues Mailling List|||||[[email protected]](mailto:[email protected])|||||[subscribe](mailto:[email protected])|[unsubscribe](mailto:[email protected])| [eagle-issues](http://mail-archives.apache.org/mod_mbox/eagle-issues/)| -| Commits Mailling List|||||[[email protected]](mailto:[email protected])|||||[subscribe](mailto:[email protected])|[unsubscribe](mailto:[email protected])| [eagle-commits](http://mail-archives.apache.org/mod_mbox/eagle-commits/)| - - -### Issue Tracker - -[https://issues.apache.org/jira/browse/EAGLE](https://issues.apache.org/jira/browse/EAGLE) - -### Eagle Team - -#### PMC Members - -* [Edward Zhang (å¼ å)](https://github.com/yonzhang) -* [Hao Chenï¼é浩ï¼](https://github.com/haoch) -* [Libin Sunï¼åç«æï¼](https://github.com/sunlibin) -* [Jilin Jiangï¼å°åéºï¼](https://github.com/zombiej) -* [Qingwen Zhaoï¼èµµæ´é¯ï¼](https://github.com/qingwen220) -* [Hemanth Dendukuri](https://github.com/hdendukuri) -* [Senthil Kumar](https://github.com/senthilec566) -* [Arun Manoharan](https://github.com/armanoharan) -* [Adunuthula, Seshu](https://github.com/seshuad) -* [Michael Wu (æ¦åæ¬)](https://github.com/anyway1021) - -#### Commiters - -* [Edward Zhang (å¼ å)](https://github.com/yonzhang) -* [Hao Chenï¼é浩ï¼](https://github.com/haoch) -* [Chaitali Gupta](https://github.com/chaitaligupta) -* [Libin Sunï¼åç«æï¼](https://github.com/sunlibin) -* [Jilin Jiangï¼å°åéºï¼](https://github.com/zombiej) -* [Qingwen Zhaoï¼èµµæ´é¯ï¼](https://github.com/qingwen220) -* [Hemanth Dendukuri](https://github.com/hdendukuri) -* [Senthil Kumar](https://github.com/senthilec566) -* [Arun Manoharan](https://github.com/armanoharan) -* [Adunuthula, Seshu](https://github.com/seshuad) -* [Liangfei Su (èè¯é£)](https://github.com/RalphSu) -* [Daniel Zhou (å¨è¾¾)](https://github.com/DadanielZ) -* [Michael Wu (æ¦åæ¬)](https://github.com/anyway1021) -* [Jinhu Wu (å´éè)](https://github.com/wujinhu) -* [Jijun Tang](https://github.com/r7raul1984) - -#### Contributors - -* [Prasad Mujumdar](https://github.com/pmujumdar) -* [Jaspaul Chahal](https://github.com/Jashchahal) -* [Huizhi Lu](https://github.com/pkuwm) -* [Jing Ge](https://github.com/JingGe) -* [boscodurai](https://github.com/boscodurai) -* [Ju He](https://github.com/joe-hj) -* [Chang Chen](https://github.com/baibaichen) -* [Huizhi Lu](https://github.com/pkuwm) -* [koone](https://github.com/koone) -* [qinzhaokun](https://github.com/qinzhaokun) -* [mizeng](https://github.com/mizeng) -* [chitin](https://github.com/chitin) - -### Project History - -* **Oct 20th, 2015** Eagle was officially open sourced by [eBay Inc.](http://www.ebay.com). - -### Credits - -* Thanks [eBay Inc.](http://www.ebay.com) to donated this project to open source community, first announement at [eBay Techblog](http://www.ebaytechblog.com/2015/10/23/eagle-is-your-hadoop-data-secured/). - -### Social Network - -* **Twitter**: [@TheApacheEagle](https://twitter.com/TheApacheEagle) -* **Wechat**: Apache_Eagle - -### Events and Meetups[^HADOOP] - -**Conferences** - -* [**IEEE BigData 2015**](http://cci.drexel.edu/bigdata/bigdata2015/): [Eagle: User Profile-based Anomaly Detection in Hadoop Clusters](http://cci.drexel.edu/bigdata/bigdata2015/APaper.html) by [Chaitali Gupta](https://github.com/chaitaligupta) and [Edward Zhang](https://github.com/yonzhang) on Oct 29 - Nov 01, 2015 at [Santa Clara, CA, USA](https://www.google.com/maps/place/Santa+Clara,+CA) -* [**China Hadoop Summit 2015**](http://www.chinahadoop.com/english): [Hadoop Eagle - Real Time Monitoring Platform](http://www.slideshare.net/haoch/hadoop-eaglev4) by [Hao Chen](https://github.com/haoch) on July 23 - 24, 2015 at [Shanghai, China](https://www.google.com/maps/place/Shanghai,+China) -* [**Hadoop Summit 2015**](http://2015.hadoopsummit.org/san-jose/): [Hadoop Eagle - Real Time Monitoring Framework for eBay Hadoop](http://www.slideshare.net/Hadoop_Summit/hadoop-eagle-real-time-monitoring) by [Edward Zhand](https://github.com/yonzhang) and [Hao Chen](https://github.com/haoch) on June 9 - 11, 2015 at [San Jose, CA, USA](https://www.google.com/maps/place/San+Jose,+CA) -<br/> - - ---- - -#### *Footnotes* - -[^HADOOP]:*All mentions of "hadoop" on this page represent Apache Hadoop.*
