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High-Performance Querying on RAW data

High-Performance Querying on RAW data . Anastasia Ailamaki EPFL. create a database to run queries. RAW DATA FILES. LOAD INTO DB. REPORT RESULTS. QUERY. APPLICATIONS. Source: “An Overview of Business Intelligence Technology”. S. Chaudhuri , U. Dayal , V. Narasayya . CACM August 2011.

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High-Performance Querying on RAW data

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  1. High-Performance Queryingon RAW data Anastasia Ailamaki EPFL

  2. create a database to run queries RAW DATA FILES LOAD INTO DB REPORT RESULTS QUERY APPLICATIONS Source: “An Overview of Business Intelligence Technology”. S. Chaudhuri, U. Dayal, V. Narasayya. CACM August 2011 data-to-query time too long data “locked” in vendor private data: no move, no copy

  3. run queries to create a database Relational DBMS MapReduce Engine Data Virtualization and Harmonization … Enterprise Search Engine … External Data Sources Operational Databases … Reporting Server Spreadsheet invest only in interesting data

  4. easy for you to say • No ETL • Declarative querying is king • Complex data: tables; arrays; hierarchies • large-scale vertical integration • Flexibility: multiple file formats; no static schemas; … • Efficiency!

  5. Higgs analysis with RAW SELECT event.jet… FROM goodruns.CSV, atlas001.root WHERE csv.RunNumber == root.RunNumber AND root.EF_2mu13 == TRUE AND … join scan csv filter scan root Code Generate the Access Paths Code Generate the Query ROOT CSV Build Position and Data Caches … containing “good” run numbers RAW is 100x faster … containing physics events

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