Microsofts Big Play for Big Data Andrew J. Brust CEO and Founder Blue Badge Insights Level: Intermediate
Meet Andrew • CEO and Founder, Blue Badge Insights • Big Data blogger for ZDNet • Microsoft Regional Director, MVP • Co-chair VSLive! and 17 years as a speaker • Founder, Microsoft BI User Group of NYC – http://www.msbinyc.com • Co-moderator, NYC .NET Developers Group – http://www.nycdotnetdev.com • “Redmond Review” columnist for Visual Studio Magazine and Redmond Developer News • brustblog.com, Twitter: @andrewbrust
What is Big Data?• 100s of TB into PB and higher• Involving data from: financial data, sensors, web logs, social media, etc.• Parallel processing often involved – Hadoop is emblematic, but other technologies are Big Data too• Processing of data sets too large for transactional databases – Analyzing interactions, rather than transactions – The three V’s: Volume, Velocity, Variety• Big Data tech sometimes imposed on small data problems
What’s MapReduce?• “Big” input data as key-value pair series• Partition the data and send to mappers (nodes in cluster)• Mappers pre-aggregate by key, then all output for (a) given key(s) goes to a reducer• Reducer completes aggregations; one output per key, with value• Map and Reduce code natively written as Java functions
What’s a Distributed File System?• One where data gets distributed over commodity drives on commodity servers• Data is replicated• If one box goes down, no data lost – Except the name node = SPOF!• BUT: HDFS is immutable – Files can only be written to once – So updates require drop + re-write (slow)
Hadoop = MapReduce + HDFS• Modeled after Google MapReduce + GFS• Have more data? Just add more nodes to cluster. – Mappers execute in parallel – Hardware is commodity – “Scaling out”• Use of HDFS means data may well be local to mapper processing• So, not just parallel, but minimal data movement, which avoids network bottlenecks
What’s NoSQL?• Databases that are non-relational (don’t let name fool you, some actually use SQL)• Four kinds: – Key-Value Store Schema-free FYI: Azure Table Storage is an example – Document Store All data stored in JSON objects – Wide-Column Store Define column families, but not columns – Graph database Manage relationships between objects
What’s HBase?• A Wide-Column Store• Modeled after Google BigTable• Born at Powerset in 2007 – Powerset acquired by Microsoft in 2008 – Adopted in 2010 by Facebook for messaging platform• Uses HDFS – Therefore, Hadoop-compatible• Hadoop often used with HBase – But you can use either without the other
The Hadoop Stack• Hadoop – MapReduce, HDFS• HBase – Lesser extent: Cassandra, HyperTable• Hive, Pig – SQL-like “data warehouse” system – Data transformation language• Sqoop – Import/export between HDFS, HBase, Hive and relational data warehouses• Flume – Log file integration• Mahout – Data Mining
What’s Hive?• Began as Hadoop sub-project – Now top-level Apache project• Provides a SQL-like (“HiveQL”) abstraction over MapReduce• Has its own HDFS table file format (and it’s fully schema-bound)• Can also work over HBase• Acts as a bridge to many BI products which expect tabular data
Hadoop Distributions• Cloudera• Hortonworks – HCatalog: Hive/Pig/MR Interop• MapR – Network File System replaces HDFS• IBM InfoSphere BigInsights – HDFS<->DB2 integration• And now Microsoft…
Hadoop on Azure• Install onto your own Azure VMs and build a cluster, or…• Provision a cluster in one step – Give it a name – Choose number of nodes and storage size in cluster – Wait for it to provision – Go!
Hadoop on Azure Data Sources• Files in HDFS• Azure Blob Storage• Amazon S3 Storage• Hive Tables
Review: ODBC Connection Types• Registry-based – User Data Source Name (DSN) – System DSN• File-based – File DSN• String-based – DSN-less connection• We need file-based• Wizard obfuscates how to do this• Don’t forget to open the ODBC port!
ODBC Driver’s Untold Story• Works with any Hive install/Hadoop cluster, not just Windows-based ones.
How Does SQL Server Fit In?• RDBMS + PDW: Sqoop connectors• RDBMS: Columnstore Indexes – Enterprise Edition only• Analysis Services: Tabular Mode – Compatible with ODBC Driver Multidimensional mode is not• RDBMS + SSAS Tabular: DirectQuery• PowerPivot (as with SSAS Tabular)• Power View – Works against PowerPivot and SSAS Tabular
The “Data-Refinery” Idea• Use Hadoop to “on-board” unstructured data, then extract manageable subsets• Load the subsets into conventional DW/BI servers and use familiar analytics tools to examine• This is the current rationalization of Hadoop + BI tools’ coexistence• Will it stay this way?
Usability Impact• PowerPivot makes analysis much easier, self-service• Power View is great for discovery and visualization; also self-service• Combine with the Hive ODBC driver and suddenly Hadoop is accessible to business users• Caveats – Someone has to write the HiveQL – Can query Big Data, but must have smaller result
Other Relevant MS Technologies• SQL Server Components: – SQL Server Parallel Data Warehouse – StreamInsight• Azure Components: – Data Explorer – DataMarket• Deprecated MSR Project – Dryad
Resources• Big On Data blog – http://www.zdnet.com/blog/big-data• Apache Hadoop home page – http://hadoop.apache.org/• Hive & Pig home pages – http://hive.apache.org/ – http://pig.apache.org/• Hadoop on Azure home page – https://www.hadooponazure.com/• SQL Server 2012 Big Data – http://bit.ly/sql2012bigdata
Thank you• firstname.lastname@example.org• @andrewbrust on twitter• Want to get the free “Redmond Roundup Plus?” – Text “bluebadge” to 22828