As an esi visiting researcher
This presentation is the property of its rightful owner.
Sponsored Links
1 / 13

As an eSI Visiting Researcher PowerPoint PPT Presentation


  • 86 Views
  • Uploaded on
  • Presentation posted in: General

As an eSI Visiting Researcher. Beth Plale Computer Science Dept. Indiana University. Background. Involved in GGF since early ‘GF’ days Relational Grid Information System research group (RGIS-RG) chair (inception-Jan 2003) Systems researcher distributed systems, and

Download Presentation

As an eSI Visiting Researcher

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


As an esi visiting researcher

As an eSI Visiting Researcher

Beth Plale

Computer Science Dept.

Indiana University


Background

Background

  • Involved in GGF since early ‘GF’ days

  • Relational Grid Information System research group (RGIS-RG) chair (inception-Jan 2003)

  • Systems researcher

    • distributed systems, and

    • experimental evaluation

  • Main research thread is data streams


Attraction of esi

Attraction of eSI

  • UK respected in grid community for expertise in databases

    • My research crosses systems and databases

  • Opportunity to work with OGSA-DAI PIs, OGSA-DAI development team, and GGF DAIS WG leaders

  • Took opportunity to develop scheme for handling stream queries within DAIS framework


Stream systems span range of functionality

Stream systems span range of functionality

  • Data manipulation

  • systems

  • processing large

  • amounts of data

  • Stream monitoring

  • systems

  • identifying unusual

  • behavior

size

and

number

of

stream

chunks

analyzed

overlap

  • Stream routing

  • systems

  • event delivery

timeliness demands

on response


Stream systems events arrive and queries long standing not vice versa

Stream systems: events arrive and queries long standing (not vice versa)

queries added

through user

interface

long-standing

queries

Results multicast to owners of satisfied queries

stock quote stream

Each arriving event matched against set of queries


Dais model applied to traditional database

DAIS model applied to traditional database

queries pushed into

external data source

OGSA-

DAI

Data

Service

transport

mechanism

(could be

pub/sub

system)

request

Data

Source

(e.g., RDBMS)

Rowset

Data

Service

Instance

Rowset

Data

Service

Instance

Rowset

Data

Service

Instance

response


Dais model applied to data stream source

DAIS model applied to data stream source

Queries pushed into

external data resource

OGSA-

DAI

Data

Service

Long

running

queries

distributed,

virtual data

source

streamed

response

Rowset

Data

Service


As an esi visiting researcher

http://lead.ou.edu


Lead data cloud

LEAD Data Cloud


Data stream architecture dais and dquob

dQUOB

queries

dQUOB

queries

dQUOB

queries

dQUOB

SQL

compiler

Data stream architecture: DAIS and dQUOB

WRF

model

WRF

model

WRF

weather

forecasting

model

subquery

scripts

query

request

Rich query operator support in external resources

Data Service

Result stream

stream

Rowset

Data

Service

stream


Positive outcomes

Positive Outcomes

  • Relationships (!)

  • Increased understanding on both sides

  • Scheme for how to handle stream queries in DAIS framework

  • LEAD project leverages OGSA-DAI


Ongoing and future collaboration

Ongoing and Future Collaboration

  • Instrumentation of OGSA-DAI

    • RGRbench

  • Leverage OGSA-DAI in LEAD

    • Provide feedback on our experiences

      • Use

      • development

  • Future visits (both directions)

  • International funding barrier?


As an esi visiting researcher

Beth Plale

[email protected]

http://www.cs.indiana.edu/~plale


  • Login