HIGH-PERFORMANCE DATA WAREHOUSING. Philip Russom Research Director for Data Management, TDWI October 9, 2012
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1 HIGH-PERFORMANCE DATA WAREHOUSING Philip Russom Research Director for Data Management, TDWI October 9, 2012
2 TDWI would like to thank the following companies for sponsoring the 2012 TDWI Best Practices research report: High-Performance Data Warehousing This presentation is based on the findings of that report.
3 Download a free copy of the report Download the report in a PDF file at: bit.ly/tdwi-bp-rpt-list Feel free to distribute the PDF file of any TDWI Best Practices Report
4 Today s Agenda Definitions High-Performance Data Warehousing (HiPer DW) Four Dimensions of HiPer DW Why care about HiPer DW? The State of HiPer DW Benefits and Barriers Problems and Opportunities HiPer DW Best Practices Developer Productivity Specific Techniques Adoption of HiPer DW Features Top Ten Priorities for HiPer DW Please #TDWI, #HiPerDW, #DataWarehouse, #EDW, #Analytics, #BigData
5 NUTSHELL DEFINITION High-Performance Data Warehousing (HiPer DW) Primarily about achieving speed and scale While also coping with increasing complexity and concurrency Speed, scale, complexity and concurrency are related Scaling may require speed Complexity and concurrency tend to inhibit speed and scale Not just the data warehouse (DW), but every layer of tech stack Business intelligence (BI), data integration (DI), analytics, etc. Speed and scale from all platform components Hardware server, CPU, memory, operating system, storage Users must design for optimal high performance DW architecture, reports, queries, analytic models, etc. Lots of tactical tweaking and tuning, too
6 The Four Dimensions of HiPer DW Speed and Scale, plus Complexity and Concurrency CONCURRENCY Competing Workloads Reporting, Real Time, OLAP, Adv. Analytics, etc. Intra-Day Data Loads Thousands of Users Ad hoc Queries SPEED Streaming Big Data Event Processing Real-Time Operation Operational BI Near-Time Analytics Dashboard Refresh Fast Queries HIGH PERFORMANCE DATA WAREHOUSING (HiPer DW) SCALE Big Data Volumes Detailed Source Data Thousands of Reports Scale Out Into: Clouds, clusters, grids, distributed architectures COMPLEXITY Big Data Variety Unstructured Data Machine/sensor Data Web & Social Media Many Sources/Targets Complex Models & SQL High Availability
7 Why Care About Next Gen MDM Now HiPer DW is a critical success factor to any real-time business process or BI solution. Operational BI, streaming analytics, just-intime inventory, facility monitoring, fraud detection, mobile asset mgt HiPer DW is key to surviving and leveraging the volume and complexity of Big Data. Evolve big data from a cost center to a resource for business innovation BI user constituencies and their collections of reports are exploding. HiPer DW (that s not just the DW) is key to scaling up to massive user communities Advanced analytics is growing aggressively It brings extreme, demanding workloads that will required HiPer DW
8 Users Priorities for High-Performance DW In priority order, based on survey responses Analytic methods are the primary beneficiaries of high performance. Advanced analytics (62%), big data for analytics (40%), OLAP (26%) Real-time BI practices are also key beneficiaries of HiPer DW. Operational BI (37%), dashboards & performance mgt (34%), operational analytics (30%), automated decisions for real-time (25%) System performance can contribute to business processes that rely on data or BI/DW/DI infrastructure. Business decisions and strategies (33%), customer experience and service (21%), business performance and execution (19%), and datadriven corporate objectives (14%) Enterprise BI needs scalable performance. Standard reports (15%), supporting thousands of concurrent users (15%), refreshing thousands of reports (12%)
9 Challenges to High-Performance DW In priority order, based on survey responses Cost is the leading challenge to achieving high performance (61%). New software, train users to optimize, acquire bigger/faster hardware A third of users (34%) feel their tools/platforms hold back performance. Half want to replace tools/platforms, in hopes of higher performance Some users think low performance is due to inadequate skills (34%). Optimal designs, tweaking, and tuning are special skills Handling data in real time (31%) can seem sluggish. Common perception: report refreshes should be as fast as Google We need to set realistic expectations with users Data problems are the most common type of performance challenge. Inadequate data mgt infrastructure (28%), poor quality of data or metadata (27%), increasingly complex data transformations (21%)
10 HiPer DW is an Opportunity, not a Problem
11 HiPer DW is Important Users are Taking Action Few users deny that HiPer DW is important. It s extremely important (66%) or moderately important (28%) Only 6% consider HiPer DW to be a non-issue The majority of users surveyed are doing something about it. Most achieve HiPer DW via a moderate amount of tweaking (61%) Others made major changes for the sake of performance (27%) Only 12% have done little or nothing
12 Why do Developers invest time in Performance Optimization? Business needs optimal performance from systems for BI/DW/DI and analytics. Business practices demand faster and bigger BI and analytics (68%), business strategy seeks maximum value from each system (19%) Keeping pace with growth is a common reason for performance optimization. Scaling up to large data volumes (46%), scaling to greater analytic complexity (32%), scaling to larger user communities with more reports (25%) One way to keep pace with growth is to upgrade hardware. Adding more data without upgrading hardware (14%), adding users and applications without upgrading hardware (8%). Adding more and heftier hardware is a tried-and-true method of optimization, though when taken to extremes it raises costs and dulls optimization skills. Performance optimization occasionally (or rarely) compensates for tool deficiencies. BI and analytic tools are not high performance (15%), database software is not high performance (6%), BI and analytic tools do not take advantage of database software (4%), database software does not have features we need (3%) SUMMARY Users improve system performance mostly in response to new business demands and overall growth, less often due to tool deficiencies.
13 Developer Productivity with HiPer DW GOOD NEWS -- Performance tweaking and tuning for are not too time consuming. 3/4 of survey respondents say optimization work consumes 30% or less of their time. Only 9% of report expending 50% or more of their time. POINT -- Tuning and tweaking are part of the job. DW/BI professionals need to hone their optimization skills and apply them to the design process, plus ongoing maintenance. BAD NEWS -- Performance optimization prevents developers from developing. In most shops, developers are under pressure to develop as much new functionality as possible, in a short time. Performance tuning gets in the way of that primary mandate. POINT Take care optimization doesn t take over your job. Adopt tools/platforms and developer methods/standards that performance without much ex post facto tuning.
14 Specific Techniques for Achieving HiPer DW The most common techniques involve changing the physical location of data. Creating summary tables (45%), creating a data mart with its own copy of data (20%), column-oriented data storage (16%). Some optimization techniques are more virtual than physical. Creating customer indices (44%) or materializing queries Fine-tuning SQL statements is a highly valued skill for HiPer DW. SQL is everywhere: reporting, analytics, DW, ETL / hand coded, generated A programmer with a knack for SQL can cure a lot of performance bottlenecks. Using in-memory databases (24%) avoids I/O bottlenecks. E.g., in-memory data caches with automated refresh and backup to disk For I/O free access to tables or cubes for operational BI, performance mgt, dashboards, etc. Upgrading hardware (21%) can be a useful technique. It can also be an expensive crutch. Add hardware only when truly necessary and effective. Workload management controls (16%) are great, if available to you. Most vendor brands of DBMS have some kind of workload management tool built in SUMMARY -- Common optimization techniques include remodeling data, indexing, revising SQL, and upgrading hardware.
15 COMMITMENT 25% Weak 50% Moderate 75% Strong 100% Trends in Techniques for High-Performance DW HOW TO READ CHART Techniques with growing adoption are on the right Techniques in decline are on the left Heavily used techniques are at the top Barely used techniques are at the bottom Multi-Core CPUs (-63%) Central EDW Mixed Workloads in Single DW Managing Large Volumes of Detailed Source Data Group 3 Moderate-to-strong commitment, weak-to-declining growth Data Warehouse Appliance Group 2 - Weak commitment, moderate-to-strong potential growth Group 1 - Moderate commitment, moderate-to-strong potential growth Intra-Day Micro-Batch Service Bus Grid Computing Real-Time Data Fetches from DW Streaming Data Solid-State Drives Column-Oriented Storage Engine No-SQL Database Complex Event Processing (CEP) Public Cloud In-Database Analytics Real-Time Data Feeds Into DW In-Memory Database Private Cloud Hadoop Distributed File System (HDFS) MapReduce -50%+ Declining -25% Weak 0% Moderate +25% Strong GROWTH Source: TDWI. Based on 278 respondents to HiPer DW Best Practices Report Survey, 2012.
16 ACCORDING TO 2012 TDWI BEST PRACTICES SURVEY Trends Among HiPer DW Techniques 1. Hottest growth areas Real-time operation: Operational BI & Operational Analytics In-database analytics: bring algorithm to data, not reverse In-memory databases: eliminate I/O for speed and scale Solid-state drives: faster (& more costly) than spinning drives 2. New stuff not used much today, but poised for growth Hadoop Distributed File System (HDFS): lots of interest, but implementations are rare; promises scalability & unstruc d data MapReduce: provides MPP execution of hand-coded routines New Analytic Databases: especially columnar & NoSQL Clouds: Users are considering private ones over public ones 3. Traditional tech s will have slow growth due to saturation Enterprise Data Warehouse (EDW): most users surveyed have this in place already Mixed workloads on single DW: some users are pushing nonstandard workloads to standalone edge systems next to EDW
17 Top Ten Priorities for High-Performance DW These are recommendations, requirements, or rules that can guide you. 1. Enable new business practices based on high-performance BI/DW/DI and analytics. 2. Make real-time operation your first technology priority for HiPer DW. 3. Make scalability your second priority. 4. Hardware: Use it, but don t abuse it. 5. Select database platforms and analytic tools that are designed for high performance. 6. Rely on specialized platform and tool functionality for certain performance gains. 7. Consider the many new architectures that boost performance. 8. Keep your performance optimization skills sharp and current. 9. Design and develop with high performance in mind. 10. Develop and apply a technology strategy for HiPer DW.
18 USER PRACTICES VENDOR PRODUCTS Four Components of a HiPer DW Strategy No single approach is adequate for all situations. Tap into and balance four approaches. 1. Up-to-date hardware platform components Especially CPUs, memory, and storage 2. Up-to-date enterprise software platforms and tools Especially those designed specifically for demanding applications in data warehousing and analytics 3. Technical users global architectures Especially data and team standards for BI development Govern data models, SQL coding, ETL logic, and analytic algorithms to assure performance 4. Tactical tweaking and tuning on the local level As required by reports, data structures, analytic algorithms, or deficient tools and platforms
19 Questions?? 19
20 Contact Information If you have further questions or comments: Philip Russom, TDWI 20
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