{"id":90548,"date":"2020-08-02T13:42:53","date_gmt":"2020-08-02T11:42:53","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-platformy-dlya-raspredelyonnoj-obrabotki-dannyh-apache-hadoop-3-3"},"modified":"2020-08-02T13:42:53","modified_gmt":"2020-08-02T11:42:53","slug":"reliz-platformy-dlya-raspredelyonnoj-obrabotki-dannyh-apache-hadoop-3-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/reliz-platformy-dlya-raspredelyonnoj-obrabotki-dannyh-apache-hadoop-3-3","title":{"rendered":"Udgivelse af Apache Hadoop 3.3 databehandlingsplatform til distribueret behandling af data","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Efter halvandet \u00e5rs udvikling af Apache Software Foundation <noindex><a rel=\"nofollow\" href=\"https:\/\/blogs.apache.org\/hadoop\/entry\/announce-apache-hadoop-3-3\">offentliggjorde<\/a><\/noindex> udgivelse <noindex><a rel=\"nofollow\" href=\"http:\/\/hadoop.apache.org\">Apache Hadoop 3.3.0<\/a><\/noindex>, en gratis platform til organisering af distribueret behandling af store datam\u00e6ngder ved hj\u00e6lp af paradigmet <noindex><a rel=\"nofollow\" href=\"http:\/\/ru.wikipedia.org\/wiki\/MapReduce\">map\/reduce<\/a><\/noindex>, hvor opgaven opdeles i mange mindre, uafh\u00e6ngige fragmenter, der hver is\u00e6r kan k\u00f8res p\u00e5 en separat node i klyngen. Lagring baseret p\u00e5 Hadoop kan str\u00e6kke sig over tusindvis af noder og indeholde eksabyte data.<\/p>\n<p>Hadoop inkluderer implementeringen af det distribuerede filsystem Hadoop Distributed Filesystem (HDFS), som automatisk sikrer datasikkerhed og er optimeret til MapReduce-applikationer. For at forenkle adgangen til data i Hadoop-lageret er der udviklet en database kaldet HBase og et SQL-lignende sprog, Pig, der fungerer som en form for SQL for MapReduce, hvis foresp\u00f8rgsler kan paralleliseres og behandles af flere Hadoop-platforme. Projektet vurderes som helt stabilt og klar til industriel drift. Hadoop anvendes aktivt i store industrielle projekter og tilbyder funktionaliteter svarende til Googles Bigtable\/GFS\/MapReduce, og Google har officielt <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=26398\">delegeret<\/a><\/noindex> Hadoop og andre Apache projekter retten til at anvende teknologier, der er omfattet af patenter relateret til MapReduce-metoden. <\/p>\n<p>Hadoop rangerer som det f\u00f8rste blandt Apache-repositorierne med hensyn til antallet af \u00e6ndringer og femte med hensyn til kodebasisens st\u00f8rrelse (omkring 4 millioner linjer). Store implementeringer af Hadoop omfatter Netflix-lagring (som gemmer over 500 milliarder h\u00e6ndelser dagligt), Twitter (en klynge p\u00e5 10.000 noder i realtid, der gemmer over et zettabyte data og h\u00e5ndterer mere end 5 milliarder sessioner dagligt), Facebook (en klynge p\u00e5 4.000 noder, der gemmer over 300 petabyte og vokser med 4 PB dagligt).<\/p>\n<p>Vigtige <noindex><a rel=\"nofollow\" href=\"https:\/\/hadoop.apache.org\/docs\/r3.3.0\/hadoop-project-dist\/hadoop-common\/release\/3.3.0\/CHANGELOG.3.3.0.html\">Optimeringer<\/a><\/noindex> i Apache Hadoop 3.3:<\/p>\n<ul>\n<li class=\"l\"> Underst\u00f8ttelse af platforme baseret p\u00e5 ARM-arkitektur er tilf\u00f8jet.\n<li class=\"l\"> Implementeringen af formatet <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/protocolbuffers\/protobuf\">Protobuf<\/a><\/noindex> (Protokolbufre), der bruges til serialisering af strukturerede data, er blevet opdateret til version 3.7.1 i forbindelse med slutningen af livscyklussen for protobuf-2.5.0.\n<li class=\"l\"> S3A-connectorens funktioner er udvidet: underst\u00f8ttelse af autentificering ved hj\u00e6lp af tokens er tilf\u00f8jet (<noindex><a rel=\"nofollow\" href=\"https:\/\/blog.cloudera.com\/hadoop-delegation-tokens-explained\/\">Delegation Token<\/a><\/noindex>), forbedret cache-st\u00f8tte til svar med statuskode 404, forbedret ydelse af S3guard, \u00f8get driftsikkerhed.\n<li class=\"l\"> I ABFS-filsystemet er problemerne med automatisk tuning l\u00f8st.\n<li class=\"l\"> Indbygget underst\u00f8ttelse af Tencent Cloud COS-filsystemet til adgang til objektlagring COS er tilf\u00f8jet.\n<li class=\"l\"> Fuld st\u00f8tte til Java 11 er tilf\u00f8jet.\n<li class=\"l\"> Implementeringen af HDFS RBF (Router-baseret Federation) er stabiliseret. Administrationsv\u00e6rkt\u00f8jer til sikkerhed er tilf\u00f8jet i HDFS Router.\n<li class=\"l\"> DNS Resolution-service er tilf\u00f8jet for at identificere servere via DNS baseret p\u00e5 node navne, hvilket g\u00f8r det muligt at undg\u00e5 at skulle opregne alle v\u00e6rter i konfigurationerne.\n<li class=\"l\"> St\u00f8tte til planl\u00e6gning af opstart er tilf\u00f8jet. <noindex><a rel=\"nofollow\" href=\"https:\/\/issues.apache.org\/jira\/browse\/YARN-5220\">opportunistiske containere.<\/a><\/noindex> gennem en centraliseret ressourceadministrator (ResourceManager), herunder mulighed for at fordele containere baseret p\u00e5 belastningen for hver node.\n<li class=\"l\"> YARN (Yet Another Resource Negotiator) applikationskatalog er tilf\u00f8jet med s\u00f8gefunktionalitet.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53476\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u043b\u0443\u0442\u043e\u0440\u0430 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f Apache Software Foundation \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0440\u0435\u043b\u0438\u0437 Apache Hadoop 3.3.0, \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u043e\u0431\u044a\u0451\u043c\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043f\u0430\u0440\u0430\u0434\u0438\u0433\u043c\u044b map\/reduce, \u043f\u0440\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0437\u0430\u0434\u0430\u0447\u0430 \u0434\u0435\u043b\u0438\u0442\u0441\u044f \u043d\u0430 \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u043e \u0431\u043e\u043b\u0435\u0435 \u043c\u0435\u043b\u043a\u0438\u0445 \u043e\u0431\u043e\u0441\u043e\u0431\u043b\u0435\u043d\u043d\u044b\u0445 \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u043e\u0432, \u043a\u0430\u0436\u0434\u044b\u0439 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0437\u0430\u043f\u0443\u0449\u0435\u043d \u043d\u0430 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u043c \u0443\u0437\u043b\u0435 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0430. \u0425\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0435 \u043d\u0430 \u0431\u0430\u0437\u0435 Hadoop \u043c\u043e\u0436\u0435\u0442 \u043e\u0445\u0432\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u0442\u044b\u0441\u044f\u0447\u0438 \u0443\u0437\u043b\u043e\u0432 \u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-90548","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u043b\u0443\u0442\u043e\u0440\u0430 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f Apache Software Foundation 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