An implementation of a Cloud monitor using LIGHT (Lightweight Index for complex queries over DHTs) for a distributed MongoDB on Chord overlay network
Read the .pdf (leggimi.pdf, currently italian only) for more infos.
The Java Doc and some UML is available here.
Synthetic/Global class diagram images are available in uml/ as svg or jpg
This is a basic implementation of Chord used to manage a MongoDB database with a single collection.
Also, it provides indexing based on timestamps for the scenario of a Cloud Monitoring System for Virtual Nodes.
We simulated a scenario consisting of virtual machines in a data center. In short:
The VMs are monitored by "scanners", which send the collected data to a RabbitMQ queue.
A component, called Message Handler, receives the readings from the shared queue and forwards them to the Datamanager, which is a client for the distributed DB.
For the demo, the scenario was run in Docker through docker-compose.
- Clone this repository
- Build the Maven project
allMaven - In a shell:
$ cd docker/
$ docker-compose up
You need to have the rights to bind port 80, and look at your SELinux policies if you use it.
- Distributed Segment Tree: Support of Range query and cover query over DHT (Zheng et al.) [https://tinyurl.com/yd8declm]
- m-LIGHT: A LIGhtweight multidimensional index for Complex Queries over DHTs (Tang et al.) [https://tinyurl.com/y7tdgcag]
- https://wiki.apache.org/cassandra/ArchitectureSSTable
- Layering a DBMS on a DHT-Based Storage Engine (Ribas et al.) [https://tinyurl.com/ybkscqzk]
- Chord: A scalable peer-to-peer lookup service for Internet applications (Stoica et al.) [https://tinyurl.com/y9uf5opr]
- LIGHT: A query-efficient yet low-maintenance indexing scheme over DHTs (Tang et al.) [https://tinyurl.com/ydaxultx]
- Prefix Hash Tree: An indexing Data Structure over Distributed Hash Tables (Ramabhadra et al.) [https://tinyurl.com/ybu3e922]
- An Adaptive Protocol for Efficient Support of Range queries in DHT-based Systems (Gao et al.) [https://tinyurl.com/yc6l6n7s]