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Applications and organizations using ZooKeeper include (alphabetically):

  • company w/ link if available
    use
  • http://www.deepdyve.com - We do search for research and provide access to high quality content using advanced search technologies
    Zookeeper is used to manage server state, control index deployment and a myriad other tasks.
  • Eclipse Communication Framework - The Eclipse ECF project provides an implementation of its Abstract Discovery services using Zookeeper. ECF itself is used in many projects providing base functionallity for communication, all based on OSGi.
  • katta - Katta serves distributed Lucene indexes in a grid environment.
    Zookeeper is used for node, master and index management in the grid.
  • 101tec - we do consulting in the area of enterprise distributed systems.
    We use zookeeper to manage a system build out of hadoop, katta, oracle batch jobs and a web component.
  • HBase - HBase is the Hadoop database. Its an open-source, distributed, column-oriented store modeled after the Google paper, Bigtable: A Distributed Storage System for Structured Data by Chang et al.
    We use ZooKeeper for master election, server lease management, bootstrapping, and coordination between servers.
  • Hedwig Hedwig is a publish-subscribe system designed to carry large amounts of data across the internet in a guaranteed-delivery fashion from those who produce it (publishers) to those who are interested in it (subscribers).
  • Idium Portal - Idium Portal is a web-publishing system delivered by Norwegian company, Idium AS.
    ZooKeeper is used for cluster messaging, service bootstrapping, and service coordination.
  • Kafka Kafka is a distributed publish/subscribe messaging system
  • Norbert Partitioned routing and cluster management.
  • Mesos Mesos is a cluster management platform that provides resource sharing and isolation across distributed applications, or frameworks. For example, Hadoop MapReduce, MPI, Hypertable, and Spark
  • Neo4j - Neo4j is a Graph Database. It's a disk based, ACID compliant transactional storage engine for big graphs and fast graph traversals, using external indicies like Lucene/Solr for global searches.
    We use ZooKeeper in the Neo4j High Availability components for write-master election, read slave coordination and other cool stuff. ZooKeeper is a great and focused project - we like!
  • Rackspace - The Email & Apps team uses ZooKeeper to coordinate sharding and responsibility changes in a distributed e-mail client that pulls and indexes data for search. ZooKeeper also provides distributed locking for connections to prevent a cluster from overwhelming servers.
  • S4 S4 is a general-purpose, distributed, scalable, partially fault-tolerant, pluggable platform that allows programmers to easily develop applications for processing continuous unbounded streams of data.
  • Yahoo! - ZooKeeper is used for a myriad of services inside Yahoo! for doing leader election, configuration management, sharding, locking, group membership etc.
  • Solr - In the "Cloud" edition (v1.5) of enterprise search engine Apache Solr, ZooKeeper is used for configuration, leader election and more.
  • Benipal Technologies - ZooKeeper is used for internal application development with Solr and Hadoop with Hbase.
  • Makara
    • Using ZooKeeper on 2-node cluster on VMware workstation, Amazon EC2, Zen
    • Using zkpython
    • Looking into expanding into 100 node cluster
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