Ahmad alkilani big data at move
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Learn about how Move.com uses BIG Data to support Realtor.com operations and continued innovation.
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Ahmad alkilani big data at move
- 1. Big Data at Move The past, present and future of Big Data at Move - Realtor.com
- 2. About me • Data Warehouse Architect • Move Inc (realtor.com) • Pluralsight Author • Passion for data and technology Ahmad Alkilani linkedin.com/in/ahmadalkilani EASkills.com
- 3. Topics… • History of Move’s enterprise data warehouse • Why Hadoop found a home at Move • High level architecture • Where we are now • Where we’re heading in the future • Q & A
- 4. Move Inc. • Leader in online real estate and operator of realtor.com • Over 410 million minutes per month on Move websites • Over 300 million user engagement events per day on realtor.com and mobile apps • Connecting consumers and customers requires lots of data
- 6. growth… - 1,000,000,000 2,000,000,000 3,000,000,000 4,000,000,000 5,000,000,000 6,000,000,000 7,000,000,000 Raw Events Move Inc. (Realtor.com and Mobile)
- 7. proactive... • Transitioned from legacy warehouse and ETLs • Near real-time collection
- 8. • Bigger servers • 8 processors 10 core each • 2 TB of RAM! • Solid state drives • Fusion IO cards • 10 Terabytes each server • Worked Great! • Until we realized we could only store 50 days worth of data! reactive … - 1 2 3 4 5 6 7 Billions Raw Events Move Inc. (Realtor.com and Mobile)
- 9. • Started with 13 nodes at a fraction of the cost of our SSD monster servers - Cost • Plan to continue to scale out – Ease of scalability • Current capacity is ~125 TB – Good starting point proactive …
- 10. Big picture…
- 11. In more details… Hive over HCatalog Transferred to HDFS and then the Hive Warehouse HDFS External Tables against data in HDFS Data moves to Hive Warehouse Dynamic Partition Inserts • Partition Pruning • Snappy Compression • Dynamic Tables with Maps and Arrays
- 12. ETL & Querying Hive… Hive Warehouse Aggregates SQL Server (EDW) Multi-Inserts Single Pass Details Stats
- 13. ETL & Querying Hive… Separate files for different keys of a Map • Resort to MapReduce instead of Hive and use MultipleOutputs class • Dynamic Partition Inserts again & Hadoop -getmerge
- 14. Some lessons learned… • Our ETLs are still expensive • Putting our data loads and cluster at the mercy of our analysts. Not a very good idea • Use Queues to guarantee room for ETLs to do their job • Default queue is for users • Specialized queue is for ETL • Keep an eye on the slots available • Use .hiverc file to automatically control behavior
- 15. Where we’re headed • Re-evaluate tool selection • Talend/Pentaho • Real-time analytics • Kafka/Honu/Flume/Storm/StreamInsight • Hive Geospatial • Integrating different technologies is OK
- 16. D3.js with Asp.Net SignalR Visualizing search activity and active listings in different states
- 17. Questions?