The History of etcd | CoreOS
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Coordination Service(ZooKeeper，etcd ，consul) ã®æ¯”較
æ¦‚è¦ æœ€è¿‘ï¼Œconsul，etcd，ZooKeeper ã¨ã„ã£ãŸï¼Œã„ã‚ゆる Coordination Service(ã“ã®åå‰ã¯Â ZooKeeper ã®è«–æ–‡ã‹ã‚‰æ‹å€Ÿã—ãŸ)ã®å®Ÿè£…ãŒé »ç¹ã«è¡Œã‚ã‚Œã¦ã„る．本記事ã§ã¯ï¼Œé–‹ç™ºãŒç››ã‚“ãªèƒŒæ™¯ã‚’è¸ã¾ãˆãŸä¸Šã§ï¼Œã‚ªãƒ¼ãƒ—ンソース実装㮠Coordination Service ã®æ¯”較を行ã†ï¼Ž Chubby ã‹ã‚‰ç¾åœ¨ã¾ã§ Paxos ㌠Google ã®æ‰‹ã«ã‚ˆã£ã¦Â Chubby ã¨ã„ã†å½¢ã§å®Ÿç”¨åŒ–ã•ã‚ŒãŸå¾Œï¼Œæ•…障検出+分散åˆæ„アルゴリズムを用ã„ãŸé«˜å¯ç”¨KVSã¨ã„ã†çµ„ã¿åˆã‚ã›ã«ã‚ˆã‚‹ Coordination Service ã®ã‚ªãƒ¼ãƒ—ンソース実装ãŒã„ãã¤ãŒå‡ºã¦ããŸï¼Žãã®ã¯ã—り㌠ZooKeeper ã§ã‚る．ZooKeeper 㯠Hadoop ファミリã§ã¯ãƒ‡ãƒ•ã‚¡ã‚¯ãƒˆã‚¹ã‚¿ãƒ³ãƒ€ãƒ¼ãƒ‰ã® Coordination Service ã§ã‚り，Hadoop ã‚’åˆã‚ã¨ã—㦠HBase，M
ZooKeeper vs. Doozer vs. Etcd | devo.ps
While devo.ps is fast approaching a public release, the team has been dealing with an increasingly complex infrastructure. We more recently faced an interesting issue; how do you share configuration across a cluster of servers? More importantly, how do you do so in a resilient, secure, easily deployable and speedy fashion? That’s what got us to evaluate some of the options available out there; Zoo
Dynamic Reconfiguration of Apache ZooKeeper
ZooKeeper allows for dynamic reconfiguration of servers in its ensemble. Manual reconfiguration is problematic as it requires changing the configuration, restarting servers, and can result in data loss. The presented solution allows ZooKeeper to reconfigure itself automatically through a speculative reconfiguration approach. It commits the reconfiguration once quorums of both the old and new ensem
Updating thousands of web servers in under a second | Zynga Engineering
How do you manage configuration files across a wide array of games, played by millions of users and served out of multiple data centers? Over the years Zynga has found that the right solution to this problem varies for each unique service and product. I’d like to present one of these solutions today: Apache ZooKeeper. Apache ZooKeeper allows Zynga to update thousands of configuration files in unde
LINE Storage: Storing billions of rows in Sharded-Redis and HBase per Month « NAVER Engineers' Blog
Hi, I’m Shunsuke Nakamura (@sunsuk7tp). Just half a year ago, I completed the Computer Science Master’s program in Tokyo Tech and joined to NHN Japan as a member of LINE server team. My ambition is to hack distributed processing and storage systems and develop the next generation’s architecture. In the LINE server team, I’m in charge of development and operation of the advanced storage system whi
BookKeeper - HADOOP2 - Apache Software Foundation
BookKeeper BookKeeper is a system to reliably log streams of records. It is designed to store write ahead logs, such as those found in database or database like applications. In fact, the Hadoop NameNode inspired BookKeeper. The NameNode logs changes to the in-memory namespace data structures to the local disk before they are applied in memory. However logging the changes locally means that if the
クラスタã®æ§‹ç¯‰ - ã©ã…ーã¡ã‚…ã„むーã«ãƒ¼
å‰å›žã®ã‚¨ãƒ³ãƒˆãƒªã®æœ€å¾Œã«ã€ŒProgrammers Guideã‚’ã¿ã‚‹ã¨ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆãƒ—ãƒã‚°ãƒ©ãƒ ãªã©ã®ä½œæˆæ–¹æ³•ãªã©ãŒè§£èª¬ã•ã‚Œã¦ã„ã¾ã™ãŒã€ã¨ã‚Šã‚ãˆãšä»Šå›žã¯ HBase ã®ã»ã†ã«é€²ã‚€ã¨ã„ã†ã“ã¨ã§ã€ZooKeeper ã«ã¤ã„ã¦ã®è©±ã¯ã„ã£ãŸã‚“ã“ã“ã§çµ‚ã‚ã‚Šã¾ã™ã€‚ã€ãªã‚“ã¦æ›¸ãã¾ã—ãŸãŒã€HBase ã®ã‚¯ãƒ©ã‚¹ã‚¿ç’°å¢ƒã‚’構築ã™ã‚‹ãŸã‚ã«ã¯ã©ã†ã‚‚ ZooKeeper もクラスタ環境ã«ãªã£ã¦ã„ã‚‹å¿…è¦ãŒã‚るよã†ãªã®ã§ã€ZooKeeper をクラスタ化ã—ã¦ã¿ã¾ã™ã€‚ è¨å®šã«ã¤ã„ã¦ã¯ã€å‰å›ž(d:id:k155e1:20100420:1271757128)ã‚’å‚ç…§ã—ã¦ãã ã•ã„。 マニュアルã§ã„ã†ã¨ Running Replicated ZooKeeper ã‚ãŸã‚Šã‹ã‚‰ã§ã—ょã†ã‹ã€‚ HBase ã®ã¨ã“ã‚ã§å‡ºã¦ãã¾ã™ãŒã€HBase をクラスタã§å‹•ä½œã•ã›ã‚‹å ´åˆã€ZooKeeper Quorum を事å‰ã«èµ·å‹•ã•ã›ã¦ãŠãå¿…è¦ãŒã‚ã‚Šã¾ã™(HDFS
Distributed Coordination with Zookeeper - igvita.com
By Ilya Grigorik on April 30, 2010 The Apache Hadoop project is an umbrella for a number of sub-projects, many of which are quite useful outside the Hadoop framework itself. Avro, for one, is a serialization framework with great performance and an API tailored for dynamic environments. Likewise, Zookeeper is a project incubated within the Hadoop ecosystem, but worth spending some time with due its
ZooKeeper プãƒã‚°ãƒ©ãƒžãƒ¼ã‚ºã‚¬ã‚¤ãƒ‰
ã“ã®ãƒ‰ã‚ュメントã¯ã€ZooKeeper ã®ã‚³ãƒ¼ãƒ‡ã‚£ãƒãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒ“スを利用ã—ãŸåˆ†æ•£ã‚¢ãƒ—リケーションを作æˆã—ãŸã„ã¨è€ƒãˆã¦ã„る開発者å‘ã‘ã®ã‚¬ã‚¤ãƒ‰ã§ã™ã€‚ã“ã®ã‚¬ã‚¤ãƒ‰ã«ã¯ã€ã‚³ãƒ³ã‚»ãƒ—トã«é–¢ã™ã‚‹æƒ…å ±ã¨ã€å®Ÿéš›ã®ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã«é–¢ã™ã‚‹æƒ…å ±ã®ä¸¡æ–¹ãŒå«ã¾ã‚Œã¦ã„ã¾ã™ã€‚ ã“ã®ã‚¬ã‚¤ãƒ‰ã®æœ€åˆã® 4 ã¤ã®ã‚»ã‚¯ã‚·ãƒ§ãƒ³ã§ã¯ã€ZooKeeper ã®ã•ã¾ã–ã¾ãªæ¦‚念ã«ã¤ã„ã¦é«˜ã„次元ã‹ã‚‰èª¬æ˜Žã—ã¾ã™ã€‚ZooKeeper ã®ã—ãã¿ã¨ ZooKeeper ã®ä½¿ã„方をç†è§£ã™ã‚‹ã«ã¯ã€ã“れらã®ã‚»ã‚¯ã‚·ãƒ§ãƒ³ã§èª¬æ˜Žã™ã‚‹ã‚³ãƒ³ã‚»ãƒ—トã«ã¤ã„ã¦çŸ¥ã£ã¦ãŠãå¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ソースコードã¯ç™»å ´ã—ã¾ã›ã‚“ãŒã€åˆ†æ•£ã‚³ãƒ³ãƒ”ューティングã«é–¢é€£ã—ãŸã•ã¾ã–ã¾ãªå•é¡Œã«ã¤ã„ã¦çŸ¥è˜ãŒã‚ã‚‹ã“ã¨ã‚’å‰æã«ã—ã¦ã„ã¾ã™ã€‚ã“れらã®ã‚»ã‚¯ã‚·ãƒ§ãƒ³ã¯ã€æ¬¡ã®ã¨ãŠã‚Šã§ã™ã€‚ ZooKeeper ã®ãƒ‡ãƒ¼ã‚¿ãƒ¢ãƒ‡ãƒ« ZooKeeper ã®ã‚»ãƒƒã‚·ãƒ§ãƒ³ ZooKeeper ã®ã‚¦ã‚©ãƒƒãƒ 一貫性ã®ä¿è¨¼ 続ã 4 ã¤ã®ã‚»ã‚¯ã‚·
ZooKeeper ã®ãƒ¬ã‚·ãƒ”ã¨ã‚½ãƒªãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³
ã“ã®ãƒ‰ã‚ュメントã§ã¯ã€ZooKeeper を使ã£ã¦é«˜åº¦ãªæ©Ÿèƒ½ã‚’実装ã™ã‚‹æ–¹æ³•ã‚’示ã—ã¾ã™ã€‚ã“れらã®æ–¹æ³•ã¯ã„ãšã‚Œã‚‚クライアントå´ã§å®Ÿè£…ã™ã‚‹ã‚‚ã®ãªã®ã§ã€ZooKeeper å´ã§ã¯ä½•ã‚‰ç‰¹åˆ¥ãªã‚µãƒãƒ¼ãƒˆã¯å¿…è¦ã‚ã‚Šã¾ã›ã‚“。ZooKeeper コミュニティãŒã“れらã®æ–¹æ³•ã‚’クライアントサイドライブラリã«å–り込んã§ãã‚ŒãŸã‚‰ã€ãã®åˆ©ç”¨ã‚‚ç°¡å˜ã«ãªã£ã¦ã€æ¨™æº–çš„ãªæ‰‹æ³•ã¨ã—ã¦ä½¿ã‚れる機会も増ãˆã‚‹ã§ã—ょã†ã€‚ ZooKeeper ã§æœ€ã‚‚興味深ã„ã“ã¨ã®ä¸€ã¤ã¯ã€ZooKeeper ãŒéžåŒæœŸã®é€šçŸ¥ã‚’使ã£ã¦ã„ã‚‹ã«ã‚‚ã‹ã‹ã‚らãšã€ãƒ¦ãƒ¼ã‚¶ãƒ¼å´ã§ã¯ ZooKeeper を使ã£ã¦ã€ã‚ューやãƒãƒƒã‚¯ã¨ã„ã£ãŸåŒæœŸä¸€è²«æ€§ãƒ—リミティブを構築ã§ãã‚‹ã“ã¨ã§ã™ã€‚ã“ã®ãƒ‰ã‚ュメントをèªã‚€ã¨ã‚ã‹ã‚‹ã‚ˆã†ã«ã€ãã‚ŒãŒå¯èƒ½ãªã®ã¯ã€ZooKeeper ãŒæ›´æ–°ã«å¯¾ã—ã¦å…¨ä½“çš„ãªé †åºã‚’ä¿è¨¼ã—ã¦ãŠã‚Šã€ã“ã®é †åºã‚’公開ã™ã‚‹ã—ãã¿ã‚’用æ„ã—ã¦ã„ã‚‹ã‹ã‚‰ã§ã™ã€‚ 以下ã§ç¤ºã™ã•ã¾ã–ã¾ãªãƒ¬ã‚·ãƒ”ã§ã¯ã€
ZooKeeper
ZooKeeper ã¯ã€åˆ†æ•£ã‚¢ãƒ—リケーションã®ãŸã‚ã®ã‚ªãƒ¼ãƒ—ンソースã®åˆ†æ•£ã‚³ãƒ¼ãƒ‡ã‚£ãƒãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒ“スã§ã™ã€‚分散アプリケーションã§ã¯ã€ZooKeeper ã«ç”¨æ„ã•ã‚Œã¦ã„る一連ã®ã‚·ãƒ³ãƒ—ルãªãƒ—リミティブを使ã†ã“ã¨ã§ã€åŒæœŸåŒ–ã€è¨å®šä¿å®ˆã€ãŠã‚ˆã³ã‚°ãƒ«ãƒ¼ãƒ—ã¨åå‰ä»˜ã‘ã®ãŸã‚ã®é«˜åº¦ãªã‚µãƒ¼ãƒ“スを実装ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ZooKeeper ã¯ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ãŒå®¹æ˜“ã«è¡Œãˆã‚‹ã‚ˆã†ã«è¨è¨ˆã•ã‚Œã¦ãŠã‚Šã€èª°ã§ã‚‚知ã£ã¦ã„るファイルシステムã®ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªãƒ„ãƒªãƒ¼æ§‹é€ ã«ä¼¼ãŸãƒ‡ãƒ¼ã‚¿ãƒ¢ãƒ‡ãƒ«ã‚’採用ã—ã¦ã„ã¾ã™ã€‚ZooKeeper 㯠Java ã§å‹•ä½œã—ã€Java 㨠C ã®ãŸã‚ã®ãƒã‚¤ãƒ³ãƒ‡ã‚£ãƒ³ã‚°ãŒç”¨æ„ã•ã‚Œã¦ã„ã¾ã™ã€‚ コーディãƒãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒ“スをé©åˆ‡ã«å‹•ä½œã•ã›ã‚‹ã“ã¨ãŒé›£ã—ã„ã®ã¯ã‚ˆã知られã¦ã„ã¾ã™ã€‚特ã«å•é¡Œãªã®ã¯ã€ãƒ¬ãƒ¼ã‚¹ã‚³ãƒ³ãƒ‡ã‚£ã‚·ãƒ§ãƒ³ã‚„デッドãƒãƒƒã‚¯ã¨ã„ã£ãŸã‚¨ãƒ©ãƒ¼ãŒèµ·ã“ã‚Šã‚„ã™ã„ã“ã¨ã§ã™ã€‚ã“ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‡ã‚£ãƒãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒ“スをã€åˆ†æ•£ã‚¢ãƒ—リケーションã®é–‹
Cloudera Blog
We are excited to announce the acquisition of Octopai, a leading data lineage and catalog platform that provides data discovery and governance for enterprises to enhance their data-driven decision making. Cloudera’s mission since its inception has been to empower organizations to transform all their data to deliver trusted, valuable, and predictive insights. With AI and […] Read blog post
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Apache Curator
Apache ZooKeeper
http://assets.en.oreilly.com/1/event/61/Manage%20Distributed%20Systems%20with%20Zookeeper%20Presentation.pdf
https://mail-archives.apache.org/mod_mbox/hadoop-zookeeper-user/201004.mbox/%
ZooKeeper Java Example
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Cloudera Blog
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