Cloud Telecons 09/23/2016

From Earth Science Information Partners (ESIP)

Telecon Info

To start the online portion of the Personal Conference meeting

  1. Go to
  2. You can also dial in using your phone: United States +1 (571) 317-3112
  3. Access Code: 445-841-573

September 26, 2016 ESIP cloud computing cluster telecon recap

Participants:Bruce Caron, Fei Hu, Caller o2, Chaowei Yang, Frack Greguska, Gill, Kevin M, Jeffrey R Hall, Joseph C Jacob, Li Angela W., Nga T Quach, Stephana Klene, Vakhnin Andrey A , Walter Jeff (this list might miss somebody else. If there is anyone else, please help add them here. Thanks!)

Presentation: NEXUS Framework for Data Ingestion and Processing (Frank Greguska) =

Two scalable databases:

  • Cassandra: break into some tiles -> database -> tiles
  • Solr DB cluster: Index chunks spatially -> identify data quickly -> real time data analytics

NEXUS Interface: draw bounding box

Big data problems: 4 V’s : volume 14.6PB, velocity 16.0 TB/Day, Variety 9,462 datasets, veracity different level products have different quality

Upcoming Big data mission: surface water and Ocean Topography(SWOT)

  • Tiling algorithms : Solr for spatial extents and metadata; cassandra: tile data; horizontal scalable


  • configurable streams: multiple tiling algorithms, L2 Swath data, L3/L4 Gridded data
  • customized tiling algorithms


  • Horizontally scalable streams
  • Cloud: OpenStack, Amazon => NEXUS deployed on cloud
how do you deploy NEXUS on cloud? How to scale up and scale down


  • pluggable validation checks: there are actual data in the tile
  • data transformation

How to implement?

  • Spring XD: Zookeeper, Kafka for node communication, Redis
  • Spring Cloud Data Flow

If you have any more questions, please send them to