spoken Language: English.
1. AWS Big Data Demystified #1.1 Big Data Architecture Lessons Learned Omid Vahdaty, Big Data Ninja
- I am not trying to sell anything.
- This is purely knowledge transfer session.
- You are more than welcome to challenge each slide, during the lecture and afterwards 🙂
- This lecture was released at 2018, take into account things change over time.
3. When the data outgrows your ability to process
- Volume (100TB processing per day)
- Velocity (4GB/s)
- Variety (JSON, CSV, Veracity (how much of the data is accurate?)
4. In the past (web,api, ops db, data warehouse) API DW
5. TODAY’S BIG DATA APPLICATION STACK PaaS and DC…
6. MY BIG DATA APPLICATION STACK “demystified”…
7. MY AWS BIG DATA APPLICATION STACK With some “Myst”…
8. Challenges creating big data architecture?
- What is the business use case ?
- How fast do u need the insights?
- 15 min – 24 hours delay and above ?
- Less than 15 min?
- Streaming? Sub seconds delay? Sub minute delay? Streaming with in flight analytics ? How complex is the compute jobs? Aggregations? joins?
9. Challenges creating big data architecture?
- What is the velocity?
- Under 100K events per second? Not a problem
- Over 1M events per second? Costly. But doable.
- Over 1B events per seconds? Not trivial at all.
- Volume ? Well…. It depends.
- Veracity (how are you going to handle different data sources?)
- Structured (CSV)
- Semi structured (JSON,XML)
- Unstructured (pictures, movies etc)
10. Challenges creating big data architecture?
- Performance targets?
- Costs targets?
- Security restrictions?
- Regulation restriction?
- Which technology to choose?
- Datacenter or cloud?
- Security Access patterns?
- Pass? Max 7 technologies
- Iaas? Max 4 technologies
11. Cloud Architecture rules of thumb…
- Decouple : ○ Store ○ Process ○ Store ○ Process ○ insight…
- Rule of thumb: max 3 technologies in dc, 7 tech max in cloud
- Don’t use more b/c: maintenance ○ Training time ○ complexity/simplicity
12. Use Case 1: Analyzing browsing history
- Data Collection: browsing history from an ISP
- Product – derives user intent and interest for marketing purposes.
- Challenges ○ Velocity: 1 TB per day ○ History of: 3M ○ Remote DC ○ Enterprise grade security ○ Privacy
13. Use Case 2: Insights from location based data
- Data collection: from a Mobile operator
- Products: ○ derives user intent and interest for marketing purposes. ○ derive location based intent for marketing purposes.
- Challenges ○ Velocity: 4GB/s … ○ Scalability: Rate was expected double every year… ○ Remote DC ○ Enterprise grade security ○ Privacy ○ Edge analytics
14. Use Case 3: Analyzing location based events.
- Data collection: streaming
- Product: building location based audiences
- Challenges: minimizing DevOps work on maintenance of a DIY streaming system
15. So what is the product?
Big data platform that ○ collects data from multiple sources ○ Analyzes the data ○ Generates insights : ■ Smart Segments (online marketing) ■ Smart reports (for marketer) ■ Audience analysis (for agencies) ● Customers? ○ Marketers ○ Publishers ○ Agencies
16. My Big Data platform is about:
- Data Collection ○ Online ■ messaging ■ Streaming ○ Offline ■ Batch ■ Performance aspects
- Data Transformation (Hive) ○ JSON, CSV, TXT, PARQUET, Binary
- Data Modeling – (R, ML, AI, DEEP, SPARK)
- Data Visualization (choose your poison) ● PII regulation + GPDR regulation
- And: Performance… Cost… Security… Simple… Cloud best practices…
17. Big Data Generic Architecture Data Collection (file based ETL from remote DC) Data Transformation ( row to colunar + cleansing) Data Modeling ( joins/agg/ML/R) Data Visualization Text, RAW
18. Big Data Generic Architecture | Data Collection Data Collection Data Transformation Data Modeling Data Visualization
19. Batch Data collection considerations
- Every hour , about 30GB compressed CSV file
- Why s3 ○ Multi part upload ○ S3 CLI ○ S3 SDK ○ (tip : gzip! )
- Why Client – needs to run at remote DC
- Why NOT your own client ○ Involves code → ■ Bugs? ■ maintenance ○ Don’t analyze data at Edge , since you cant go back in time.
- Why Not Streaming? ○ less accurate ○ Expensive
20. S3 Considerations
- Security ○ at rest: server side S3-Managed Keys (SSE-S3) ○ at transit: SSL / VPN ○ Hardening: user, IP ACL, write permission only.
- Upload ○ AWS s3 cli ○ Multi part upload ○ Aborting Incomplete Multipart Uploads Using a Bucket Lifecycle Policy ○ Consider S3 CLI Sync command instead of CP
21. Sqoop – ETL
- Open source , part of EMR
- HDFS to RDMS and back. Via JDBC.
- E.g BiDirectional ETL from RDS to HDFS
- Unlikely use case: ETL from customer source DB.
22. Flume & Kafka
- Opens source project for streaming & messaging
- Popular ● Generic ● Good practice for many use cases. (a meetup by it self) ● Highly durable, scalable, extension etc.
- Downside : DIY, Non trivial to get started
23. Data Transfer Options
- Direct Connect (4GB/s?)
- For all other use case ○ S3 multipart upload ○ Compression ○ Security
- Data at motion
- Data at rest
24. Quick intro to Stream collection
- Kinesis Client Library (code)
- AWS lambda (code)
- EMR (managed hadoop)
- Third party (DIY) ○ Spark streaming (latency min =1 sec) , near real time, with lot of libraries. ○ Storm – Most real time (sub millisec), java code based. ○ Flink (similar to spark)
- Stream – collect@source and near real time processing
- Near real time ○ High throughput ○ Low cost ○ Easy administration – set desired level of capacity ○ Delivery to : s3,redshift, Dynamo, … ○ Ingress 1mb, egress 2mbs. Upto 1000 Transaction per second. ○ Not managed!
- Analytics – in flight analytics.
- Firehose – Park you data @ destination.
26. Firehose – for Data parking
- Not for fast lane – no in flight analytics
- Capture , transform and load. ○ Kinesis ○ S3 ○ Redshift ○ elastic search
- Managed Service
27. Comparison of Kinesis product
● Streams ○ Sub 1 sec processing latency ○ Choice of stream processor (generic) ○ For smaller events
● Firehose ○ Zero admin ○ 4 targets built in (redshift, s3, search, etc) ○ Buffering 60 sec minimum. ○ For larger “events”
28. Big Data Generic Architecture | Data Collection Data Collection S3 Data Transformation Data Modeling Data Visualization
29. Big Data Generic Architecture | Transformation Data Collection S3 Data Transformation Data Modeling Data Visualization
30. EMR ecosystem
● Hive ● Pig ● Hue ● Spark ● Oozie ● Presto ● Ganglia ● Zookeeper (hbase) ● zeppelin
31. EMR Architecture
● Master node
● Core nodes – like data nodes (with storage: HDFS)
● Task nodes – (extends compute)
● Does Not have Standby Master node
● Best for transient cluster (goes up and down every night)
32. EMR lesson learned…
● Bigger instance type is good architecture
● Use spot instances – for the tasks.
● Don’t always use TEZ (MR? Spark?)
● Make sure your choose instance with network optimized
● Resize cluster is not recommended
● Bootstrap to automate cluster upon provisioning
● Use Steps to automate steps on running cluster
● Use Glue to share Hive MetaStore
33. So use EMR for …
● Most dominant ○ Hive ○ Spark ○ Presto
● And many more….
● Good for: ○ Data transformation ○ Data modeling ○ Batch ○ Machine learning
● SQL over hadoop.
● Engine: spark, tez, MR
● JDBC / ODBC
● Not good when need to shuffle.
● Not peta scale.
● SerDe json, parquet,regex,text etc.
● Dynamic partitions
● Insert overwrite
● Data Transformation
● Convert to Columnar
● SQL over hadoop
● Not good always for join on 2 large tables.
● Limited by memory
● Not fault tolerant like hive.
● Optimized for ad hoc queries
● No insert overwrite
● No dynamic partitions.
● Has some connectors : redshift and more
● https://amazon-aws-big-data- demystified.ninja/2018/07/02/aws-emr- presto-demystified-everything-you- wanted-to-know-about-presto/
● Distributed Shell scripting
● Generating SQL like operations.
● Engine: MR, Tez
● S3, DynamoDB access
● Use Case: for data science who don’t know SQL, for system people, for those who want to avoid java/scala
● Fair fight compared to hive in term of performance only
● Good for unstructured files ETL : file to file , and use sqoop.
Hadoop user experience
● Logs in real time and failures.
● Multiple users
● Native access to S3.
● File browser to HDFS.
● Manipulate metascore
● Job Browser
● Query editor
● Hbase browser
● Sqoop editor, oozier editor, Pig Editor
● EMR Oozie ○ Opens source workflow
■ Workflow: graph of action
■ Coordinator: scheduler jobs ○ Support: hive, sqoop , spark etc. ● Other: AirFlow, Knime, Luigi, Azkaban,AWS Data Pipeline
39. Big Data Generic Architecture | Transformation Data Collection S3 Data Transformation Data Modeling Data Visualization
40. Big Data Generic Architecture | Modeling Data Collection S3 Data Transformation Data Modeling Data Visualization
● In memory
● X10 to X100 times faster
● Good optimizer for distribution
● Rich API
● Spark SQL
● Spark Streaming
● Spark ML (ML lib)
● Spark GraphX (DB graphs)
42. Spark Streaming
● Near real time (1 sec latency)
● like batch of 1sec windows
● Streaming jobs with API
● Not relevant to us…
43. Spark ML
● Collaborative filtering
● Code: java, scala, python, sparkR
44. Spark flavours
● With yarn
● With mesos
45. Spark Downside
● Compute intensive
● Performance gain over mapreduce is not guaranteed.
● Streaming processing is actually batch with very small window.
● Different behaviour between hive and spark SQL
46. Spark SQL
● Same syntax as hive
● Optional JDBC via thrift
● Non trivial learning curve
● Upto X10 faster than hive.
● Works well with Zeppelin (out of the box)
● Does not replaces Hive
● Spark not always faster than hive ● insert overwrite –
47. Apache Zeppelin
● Notebook – visualizer
● Built in spark integration
● Interactive data analytics
● Easy collaboration.
● Uses SQL
● work s on top of Hive/ SparkSQL
● Inside EMR.
● Uses in the background: ○ Shiro ○ Livy
48. R + spark R
● Open source package for statistical computing.
● Works with EMR
● “Matlab” equivalent
● Works with spark
● Not for developer 🙂 for statistician
● R is single threaded – use spark R to distribute.
● Not everything works perfect.
● OLAP, not OLTP→ analytics , not transaction
● Fully SQL
● Fully ACID
● No indexing
● Fully managed
● Petabyte Scale
● Can create slow queue for queries ○ which are long lasting. ● DO NOT USE FOR transformation.
● Good for : DW, Complex Joins.
50. Redshift spectrum
● Extension of Redshift, use external table on S3.
● Require redshift cluster.
● Not possible for CTAS to s3, complex data structure, joins.
● Good for ○ Read only Queries ○ Aggregations on Exabyte.
51. EMR vs Redshift
● How much data loaded and unloaded?
● Which operations need to performed?
● Recycling data? → EMR
● History to be analyzed again and again ? → emr
● What the data needs to end up? BI?
●Use spectrum in some use cases. (aggregations)?
● Raw data? s3.
52. Hive VS. Redshift
● Amount of concurrency ? low → hive, high → redshift
● Access to customers? Redshift?
● Transformation, Unstructured , batch, ETL → hive.
● Peta scale ? redshift ● Complex joins → Redshift
53. Big Data Generic Architecture | Modeling Data Collection S3 Data Transformation Data Modeling Data Visualization
54. Big Data Generic Architecture | Visualize Data Collection S3 Data Transformation Data Modeling Data Visualization
● Presto SQL
● In memory
● Hive metastore for DDL functionality
○ Complex data types ○ Multiple formats ○ Partitions
● Good for: ○ Read only SQL, ○ Ad hoc query, ○ low cost, ○ managed
● Managed Visualizer, simple, cheap
57. Big Data Generic Architecture | Summary Data Collection S3 Data Transformation Data Modeling Data Visualization
58. Summary: Lesson learned
● Productivity of Data Science and Data engineering ○ Common language of both teams IS SQL! ○ Spark cluster has many bridges: SparkR, Spark ML, SparkSQL , Spark core.
● Minimize the amount DB’s used ○ Different syntax (presto/hive/redshift) ○ Different data types ○ Minimize ETLS via External Tables+Glue!
● Not always Streaming is justified (what is the business use case? PaaS?)
● Spark SQL ○ Sometimes faster than redshift ○ Sometimes slower than hive ○ Learning curve is non trivial
● Smart Big Data Architecture is all about: ○ Faster, Cheaper, Simpler, More Secured.
59. Stay in touch…
● Omid Vahdaty
● Join our meetup, FB group and youtube channel
https://www.meetup.com/AWS-Big-Data-Demystified/ https://www.facebook.com/groups/amazon.aws.big.data.demystified/ https://www.youtube.com/channel/UCzeGqhZIWU-hIDczWa8GtgQ?view_as=subscriber