biwa2015 - end-to-end hadoop development using odi, obiee and oracle big data

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End-to-End Hadoop Development using OBIEE, ODI and Oracle Big Data Mark Rittman, CTO, Rittman Mead BIWA Summit, Jan 2015, San Francisco





About the Speaker

•Mark Rittman, Co-Founder of Rittman Mead •Oracle ACE Director, specialising in Oracle BI&DW •14 Years Experience with Oracle Technology •Regular columnist for Oracle Magazine •Author of two Oracle Press Oracle BI books •Oracle Business Intelligence Developers Guide •Oracle Exalytics Revealed •Writer for Rittman Mead Blog :http://www.rittmanmead.com/blog

•Email : [email protected] •Twitter : @markrittman

http://www.rittmanmead.com/blog

mailto:[email protected]





About Rittman Mead

•Oracle BI and DW Gold partner •Winner of five UKOUG Partner of the Year awards in 2013 - including BI •World leading specialist partner for technical excellence, solutions delivery and innovation in Oracle BI

•Approximately 80 consultants worldwide •All expert in Oracle BI and DW •Offices in US (Atlanta), Europe, Australia and India •Skills in broad range of supporting Oracle tools: ‣OBIEE, OBIA ‣ODIEE ‣Essbase, Oracle OLAP ‣GoldenGate ‣Endeca



The Oracle Reference DW Architecture c. 2013

•Centred on the Oracle RDBMS and structured data •All incoming data is modelled at load point, schemas assigned, stored in RDBMS layers •BI metadata layer and ability to federate at BI query stage •Data storage capacity limited by RDBMS



and now …this happened



Today’s Oracle Information Management ArchitectureActionable

Events

Event Engine Data Reservoir

Data Factory Enterprise Information Store

Reporting

Discovery Lab

Actionable Information

ActionableInsights

Input Events

Execution

Innovation

Discovery Output

Events & Data

Structured Enterprise Data

Other Data



Today’s Layered Data Warehouse Architecture

Virtu

aliz

atio

n &

Q

uery

Fed

erat

ion

Enterprise Performance Management

Pre-built & Ad-hoc BI Assets

Information Services

Data Ingestion

Information Interpretation

Access & Performance Layer

Foundation Data Layer

Raw Data Reservoir

Data Science

Data Engines & Poly-structured sources

Content

Docs Web & Social Media

SMS

Structured Data Sources

•Operational Data •COTS Data •Master & Ref. Data •Streaming & BAM

Immutable raw data reservoir Raw data at rest is not interpreted

Immutable modelled data. Business Process Neutral form. Abstracted from business process changes

Past, current and future interpretation of enterprise data. Structured to support agile access & navigation

Discovery Lab Sandboxes Rapid Development Sandboxes

Project based data stores to support specific discovery objectives

Project based data stored to facilitate rapid content / presentation delivery

Data Sources



The Oracle Data Warehousing Platform - 2014



Combining Oracle RDBMS with Hadoop + NoSQL

•High-value, high-density data goes into Oracle RDBMS •Better support for fast queries, summaries, referential integrity etc

•Lower-value, lower-density data goes into Hadoop + NoSQL ‣Also provides flexible schema, more agile development

•Successful next-generation BI+DW projects combine both - neither on their own is sufficient



Oracle’s Big Data Products

•Oracle Big Data Appliance ‣Optimized hardware for Hadoop processing ‣Cloudera Distribution incl. Hadoop ‣Oracle Big Data Connectors, ODI etc

•Oracle Big Data Connectors •Oracle Big Data SQL •Oracle NoSQL Database •Oracle Data Integrator •Oracle R Distribution •OBIEE, BI Publisher and Endeca Info Discovery



Oracle Big Data SQL

•Part of Oracle Big Data 4.0 (BDA-only) ‣Also requires Oracle Database 12c, Oracle Exadata Database Machine

•Extends Oracle Data Dictionary to cover Hive •Extends Oracle SQL and SmartScan to Hadoop •Extends Oracle Security Model over Hadoop ‣Fine-grained access control ‣Data redaction, data masking ‣Uses fast c-based readers where possible(vs. Hive MapReduce generation) ‣Map Hadoop parallelism to Oracle PQ ‣Big Data SQL engine works on top of YARN ‣Like Spark, Tez, MR2

Exadata Storage Servers

HadoopCluster

Exadata DatabaseServer

Oracle Big Data SQL

SQL Queries

SmartScan SmartScan



Productising the Next-Generation IM Architecture



Still a Key Role for Data Integration, and BI Tools•Fast, scaleable low-cost / flexible-schema data capture using Hadoop + NoSQL (BDA) •Long-term storage of the most important downstream data - Oracle RBDMS (Exadata) •Fast analysis + business-friendly interface : OBIEE, Endeca (Exalytics), RTD etc



OBIEE for Enterprise Analysis Across all Data Sources

•Dashboards, analyses, OLAP analytics, scorecards, published reporting, mobile

•Presented as an integrated business semantic model •Optional mid-tier query acceleration using Oracle Exalytics In-Memory Machine

•Access data from RBDMS, applications, Hadoop, OLAP, ADF BCs etc

Enterprise SemanticBusiness Model

Business PresentationLayer (Reports, Dashboards)

In-Memory Caching Layer

ApplicationSources

Hadoop /NoSQL Sources

DW / OLAP Sources



Bringing it All Together : Oracle Data Integrator 12c

•ODI provides an excellent framework for running Hadoop ETL jobs ‣ELT approach pushes transformations down to Hadoop - leveraging power of cluster

•Hive, HBase, Sqoop and OLH/ODCH KMs provide native Hadoop loading / transformation ‣Whilst still preserving RDBMS push-down ‣Extensible to cover Pig, Spark etc

•Process orchestration •Data quality / error handling •Metadata and model-driven



Typical RM Project BDA Topology

•Starter BDA rack, or full rack •Kerberos-secured usingincluded KDC server

• Integration with corporate LDAPfor Cloudera Manager, Hue etc

•Developer access through Hue,Beeline, R Studio

•End-user access throughOBIEE, Endeca and other tools ‣With final datasets usuallyexported to Exadata or Exalytics



Working with Oracle Big Data Appliance

•Don’t underestimate the value of “pre-integrated” - massive time-saver for client ‣No need to integrate Big Data Connectors, ODI Agent etc with HDFS, Hive etc etc

•Single support route - raise SR with Oracle, they will route to Cloudera if needed •Single patch process for whole cluster - OS, CDH etc etc •Full access to Cloudera Enterprise features •Otherwise … just another CDH cluster in terms of SSH access etc •We like it ;-)



Oracle Big Data Connectors

•Oracle-licensed utilities to connect Hadoop to Oracle RBDMS ‣Bulk-extract data from Hadoop to Oracle, or expose HDFS / Hive data as external tables ‣Run R analysis and processing on Hadoop ‣Leverage Hadoop compute resources to offload ETL and other work from Oracle RBDMS ‣Enable Oracle SQL to access and load Hadoop data



Working with the Oracle Big Data Connectors

•Oracle Loader for Hadoop, Oracle SQL Connector for HDFS - rarely used ‣Sqoop works both way (Oracle>Hadoop, Hadoop>Oracle) and is “good enough” ‣OSCH replaced by Oracle Big Data SQL for direct Oracle>Hive access

•Oracle R Advanced Analytics for Hadoop has been very useful though ‣Run MapReduce jobs from R ‣Run R functions across Hive tables



Oracle R Advanced Analytics for Hadoop Key Features

•Run R functions on Hive Dataframes •Write MapReduce functions in R



Data Loading into Hadoop

•Default load type is real-time, streaming loads, using Apache Flume, Apache Kafka etc ‣Batch / bulk loads only typically used to seed system

•Variety of sources including web log activity, event streams •Target is typically HDFS (Hive) or HBase •Data typically lands in “raw state” ‣Lots of files and events, need to be filtered/aggregated ‣Typically semi-structured (JSON, logs etc) ‣High volume, high velocity

-Which is why we use Hadoop rather thanRBDMS (speed vs. ACID trade-off)

‣Economics of Hadoop means its often possible toarchive all incoming data at detail level

Loading Stage

Real-Time Logs / Events

File / UnstructuredImports



GoldenGate for Continuous Streaming to Hadoop

•Oracle GoldenGate is also an option, for streaming RDBMS transactions to Hadoop •Leverages GoldenGate & HDFS / Hive Java APIs •Sample Implementations on MOS Doc.ID 1586210.1 (HDFS) and 1586188.1 (Hive) •Likely to be formal part of GoldenGate in future release - but usable now •Can also integrate with Flume for delivery to HDFS - see MOS Doc.ID 1926867.1



ODI on Hadoop - Big Data Projects Discover ETL Tools

•ODI provides an excellent framework for running Hadoop ETL jobs ‣ELT approach pushes transformations down to Hadoop - leveraging power of cluster

•Hive, HBase, Sqoop and OLH/ODCH KMs provide native Hadoop loading / transformation ‣Whilst still preserving RDBMS push-down ‣Extensible to cover Pig, Spark etc

•Process orchestration •Data quality / error handling •Metadata and model-driven



ODI on Hadoop - How Well Does It Work?

•Very good for set-based processing of Hadoop data (HiveQL) ‣Can run python, R etc scripts as procedures

•Brings metadata and team-based ETL development to Hadoop •Process orchestration, error-handling etc •Rapid innovation from the ODI Product Dev team - Spark KMs etc coming soon •But requires Hadoop devs to learn ODI, or add ODI developer to the project



Oracle Big Data SQL and ODI12c

•Hive, and MapReduce, are well suited to batch-type ETL jobs, but … •Not all join types are available in Hive - joins must be equality joins •Any data from external Oracle RDBMS sources has to be staged in Hadoop before joining •Limited set of HiveQL functions vs. Oracle SQL •Oracle-based mappings have to importHive data into DB before accessing it



Adding Big Data SQL to ODI Hadoop Mappings

•Makes it easy to map Hadoop (Hive) data into Oracle-based mappings •Gives Hive mappings the ability to use Oracle SQL including range of joins



Oracle Big Data SQL and Data Integration

•Gives us the ability to easily bring in Hadoop (Hive) data into Oracle-based mappings •Allows us to create Hive-based mappings that use Oracle SQL for transforms, joins •Faster access to Hive data for real-time ETL scenarios •Through Hive, bring NoSQL and semi-structured data access to Oracle ETL projects •For our scenario - join weblog + customer data in Oracle RDBMS, no need to stage in Hive



Custom KM : LKM Hive to Oracle (Big Data SQL)

•ODI12c Big Data SQL example on BigDataLite VM uses a custom KM for Big Data SQL ‣LKM Hive to Oracle (Big Data SQL) - KM code downloadable from java.net ‣Allows Hive+Oracle joins by auto-creating ORACLE_HIVE extttab definition to enable Big Data SQL Hive table access

http://java.net



Options for Sharing Hadoop Output with Wider Audience

•During the discovery phase of a Hadoop project, audience are likely technical ‣Most comfortable with data analyst tools, command-line, low-level access to the data

•During the exploitation phase, audience will be less technical ‣Emphasis on graphical tools, and integration with wider reporting toolset + metadata

•Three main options for visualising and sharing Hadoop data 1.Coming Soon - Oracle Big Data Discovery (Endeca on Hadoop) 2.OBIEE reporting against Hadoop

direct using Hive/Impala, or Oracle Big Data SQL 3.OBIEE reporting against an export of the

Hadoop data, on Exalytics / RDBMS



Coming Soon - Oracle Big Data Discovery



Coming Soon : Oracle Data Enrichment Cloud Service

•Cloud-based service for loading, enriching, cleansing and supplementing Hadoop data •Part of the Oracle Data Integration product family •Used up-stream from Big Data Discovery •Aims to solve the “data quality problem” for Hadoop



New in OBIEE 11.1.1.7 : Hadoop Connectivity through Hive

•MapReduce jobs are typically written in Java, but Hive can make this simpler •Hive is a query environment over Hadoop/MapReduce to support SQL-like queries •Hive server accepts HiveQL queries via HiveODBC or HiveJDBC, automaticallycreates MapReduce jobs against data previously loaded into the Hive HDFS tables

•Approach used by ODI and OBIEE to gain access to Hadoop data •Allows Hadoop data to be accessed just like any other data source



OBIEE 11.1.1.7 / HiveServer2 ODBC Driver Issue

•Most customers using BDAs are using CDH4 or CDH5 - which uses HiveServer2 •OBIEE 11.1.1.7 only ships/supports HiveServer1 ODBC drivers •But … OBIEE 11.1.1.7 on Windows can use the Cloudera HiveServer2 ODBC drivers ‣which isn’t supported by Oracle ‣but works!



Using Big Data SQL with OBIEE11g

•Preferred Hadoop access path for customers with Oracle Big Data Appliance is Big Data SQL •Oracle SQL Access to both relational, and Hive/NoSQL data sources •Exadata-type SmartScan against Hadoop datasets

•Response-time equivalent to Impala or Hive on Tez •No issues around HiveQL limitations • Insulates end-users around differencesbetween Oracle and Hive datasets



Finally … What Keeps the CIO Awake at Night

•Security and Privacy Regulations ‣Are we analysing and sharing data in compliance with privacy regulations?

-And if we are - would customers think our use of it is ethical? ‣Do I know if the data in my Hadoop cluster is *really* secure?



Hadoop Security “By Default”

•Connections between Hadoop services, and by users to services, aren’t authenticated •Security is fragmented : HDFS, Hive, OS user accounts, Hue, CM all separate models •No single place to define security policies, groups, access rights •No single tool to audit access and permissions •By default, everything is open and trusted - reflects roots in academia, R&D, marketing depts



Oracle Big Data SQL : Single RBDMS/Hadoop Security Model

•Potential to extend Oracle security model over Hadoop (Hive) data ‣Masking / Redaction ‣VPD ‣FGAC



Summary

•Hadoop and Oracle Big Data Appliance are increasingly appearing in BI+DW Projects •Gives DW projects the ability to store more data, cheaper and more flexibly than before •Enables non-relational (SQL) query tools and analysis techniques (R, Spark etc) •Extends BI’s capability to report and analyze across wider data sources •Maturity varies widely in terms of tool maturity, and Oracle integration with Hadoop •Trend is for Oracle to “productize” big data, creating tools + products around Oracle BDA •We are probably at early stages - but very interesting times to be an Oracle BI+DW dev!





Thank You for Attending!

•Thank you for attending this presentation, and more information can be found at http://www.rittmanmead.com

•Contact us at [email protected] or [email protected] •Look out for our book, “Oracle Business Intelligence Developers Guide” out now! •Follow-us on Twitter (@rittmanmead) or Facebook (facebook.com/rittmanmead)

http://www.rittmanmead.com





End-to-End Hadoop Development using OBIEE, ODI and Oracle Big Data Mark Rittman, CTO, Rittman Mead BIWA Summit, Jan 2015, San Francisco

biwa2015 - end-to-end hadoop development using odi, obiee and oracle big data

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