Apache ZooKeeper
E185678
Apache ZooKeeper is a centralized service for maintaining configuration information, naming, and distributed synchronization in large-scale distributed systems.
All labels observed (6)
| Label | Occurrences |
|---|---|
| ZooKeeper | 3 |
| Apache ZooKeeper canonical | 1 |
| Apache ZooKeeper (inspired design) | 1 |
| Google Chubby lock service | 1 |
| JournalNode | 1 |
| ZooKeeper (legacy dependency) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1647857 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Apache ZooKeeper Context triple: [Hadoop, ecosystemIncludes, Apache ZooKeeper]
-
A.
Apache Mesos
Apache Mesos is an open-source cluster manager that abstracts CPU, memory, storage, and other resources away from machines to enable efficient deployment and scaling of distributed applications and frameworks.
-
B.
Hadoop
Hadoop is an open-source framework that enables distributed storage and parallel processing of large data sets across clusters of commodity hardware.
-
C.
Paxos consensus algorithm
The Paxos consensus algorithm is a fault-tolerant protocol for achieving agreement among distributed systems, widely used as a foundation for reliable, replicated state machines and modern distributed databases.
-
D.
Jepsen
Jepsen is a surname most notably associated with individuals such as display technology innovator Mary Lou Jepsen.
-
E.
Paxos
Paxos is a small Greek island in the Ionian Sea, known for its clear turquoise waters, olive groves, and tranquil, less-touristed atmosphere.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Apache ZooKeeper Target entity description: Apache ZooKeeper is a centralized service for maintaining configuration information, naming, and distributed synchronization in large-scale distributed systems.
-
A.
Apache Mesos
Apache Mesos is an open-source cluster manager that abstracts CPU, memory, storage, and other resources away from machines to enable efficient deployment and scaling of distributed applications and frameworks.
-
B.
Hadoop
Hadoop is an open-source framework that enables distributed storage and parallel processing of large data sets across clusters of commodity hardware.
-
C.
Paxos consensus algorithm
The Paxos consensus algorithm is a fault-tolerant protocol for achieving agreement among distributed systems, widely used as a foundation for reliable, replicated state machines and modern distributed databases.
-
D.
Jepsen
Jepsen is a surname most notably associated with individuals such as display technology innovator Mary Lou Jepsen.
-
E.
Paxos
Paxos is a small Greek island in the Ionian Sea, known for its clear turquoise waters, olive groves, and tranquil, less-touristed atmosphere.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Apache Software Foundation project
ⓘ
distributed coordination service ⓘ open-source software ⓘ |
| architecture | replicated state machine ⓘ |
| communicationProtocol | custom TCP-based protocol ⓘ |
| consensusAlgorithm | Zab protocol ⓘ |
| consistencyModel | sequential consistency ⓘ |
| dataModel | hierarchical namespace ⓘ |
| developer | Apache Software Foundation ⓘ |
| feature |
atomic updates
ⓘ
high availability through replication ⓘ reliable data delivery ⓘ sequential consistency ⓘ single system image ⓘ |
| initialReleaseYear | 2008 ⓘ |
| license | Apache License 2.0 ⓘ |
| programmingLanguage | Java ⓘ |
| provides |
configuration management
ⓘ
distributed synchronization ⓘ group services ⓘ naming service ⓘ |
| recommendedServerCount | odd number of servers ⓘ |
| repository | https://github.com/apache/zookeeper ⓘ |
| stores | znodes ⓘ |
| supports |
ACL-based access control
ⓘ
client sessions ⓘ quorum-based writes ⓘ session timeouts ⓘ watch mechanism for data changes ⓘ |
| supportsLanguage |
C
ⓘ
C++ ⓘ Go ⓘ Java ⓘ Node.js ⓘ Python ⓘ |
| typicalDeployment | cluster of ZooKeeper servers (ensemble) ⓘ |
| useCase |
coordination of distributed systems
ⓘ
distributed locking ⓘ leader election ⓘ service discovery ⓘ |
| usedBy |
Apache HBase
ⓘ
Hadoop ⓘ
surface form:
Apache Hadoop
Apache Kafka ⓘ Apache Solr ⓘ Apache Storm ⓘ |
| website | https://zookeeper.apache.org/ ⓘ |
| znodeType |
ephemeral znode
ⓘ
persistent znode ⓘ sequential znode ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Apache ZooKeeper Description of subject: Apache ZooKeeper is a centralized service for maintaining configuration information, naming, and distributed synchronization in large-scale distributed systems.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Google Chubby lock service
this entity surface form:
Apache ZooKeeper (inspired design)
this entity surface form:
ZooKeeper
this entity surface form:
ZooKeeper
this entity surface form:
JournalNode
this entity surface form:
ZooKeeper (legacy dependency)