The document introduces JStorm, an open source distributed real-time computation framework. It was created by Alibaba to address issues with Apache Storm and improve performance for real-time applications. JStorm has been used by Alibaba to process over 3 trillion messages per day across 3000+ servers. Key features discussed include high throughput, fault tolerance, horizontal scalability, and more powerful scheduling capabilities compared to Storm.
Hadoop is emerging as the preferred solution for big data analytics across unstructured data. Using real world examples learn how to achieve a competitive advantage by finding effective ways of analyzing new sources of unstructured and machine-generated data.
These are slides from a lecture given at the UC Berkeley School of Information for the Analyzing Big Data with Twitter class. A video of the talk can be found at http://blogs.ischool.berkeley.edu/i290-abdt-s12/2012/08/31/video-lecture-posted-intro-to-hadoop/
These slides cover the very basics of Hadoop architecture, in particular HDFS. This was my presentation in the first Delhi Hadoop User Group (DHUG) meetup held at Gurgaon on 10th September 2011. Loved the positive feedback. I'll also upload a more elaborate version covering Hadoop mapreduce architecture as well soon. Most of the stuff covered in these slides can be found in Tom White's book as well (See the last slide)
Big Data and Hadoop - History, Technical Deep Dive, and Industry TrendsEsther Kundin
An overview of the history of Big Data, followed by a deep dive into the Hadoop ecosystem. Detailed explanation of how HDFS, MapReduce, and HBase work, followed by a discussion of how to tune HBase performance. Finally, a look at industry trends, including challenges faced and being solved by Bloomberg for using Hadoop for financial data.
Hadoop is emerging as the preferred solution for big data analytics across unstructured data. Using real world examples learn how to achieve a competitive advantage by finding effective ways of analyzing new sources of unstructured and machine-generated data.
These are slides from a lecture given at the UC Berkeley School of Information for the Analyzing Big Data with Twitter class. A video of the talk can be found at http://blogs.ischool.berkeley.edu/i290-abdt-s12/2012/08/31/video-lecture-posted-intro-to-hadoop/
These slides cover the very basics of Hadoop architecture, in particular HDFS. This was my presentation in the first Delhi Hadoop User Group (DHUG) meetup held at Gurgaon on 10th September 2011. Loved the positive feedback. I'll also upload a more elaborate version covering Hadoop mapreduce architecture as well soon. Most of the stuff covered in these slides can be found in Tom White's book as well (See the last slide)
Big Data and Hadoop - History, Technical Deep Dive, and Industry TrendsEsther Kundin
An overview of the history of Big Data, followed by a deep dive into the Hadoop ecosystem. Detailed explanation of how HDFS, MapReduce, and HBase work, followed by a discussion of how to tune HBase performance. Finally, a look at industry trends, including challenges faced and being solved by Bloomberg for using Hadoop for financial data.
Hadoop Interview Questions and Answers by rohit kapakapa rohit
Hadoop Interview Questions and Answers - More than 130 real time questions and answers covering hadoop hdfs,mapreduce and administrative concepts by rohit kapa
Design, Scale and Performance of MapR's Distribution for Hadoopmcsrivas
Details the first ever Exabyte-scale system that can hold a Trillion large files. Describes MapR's Distributed NameNode (tm) architecture, and how it scales very easily and seamlessly. Shows map-reduce performance across a variety of benchmarks like dfsio, pig-mix, nnbench, terasort and YCSB.
•Arun Murthy, from the Hadoop team at Yahoo! will introduce compendium of best practices for applications running on Apache Hadoop. In fact, we introduce the notion of a Grid Pattern which, similar to Design Pattern, represents a general reusable solution for applications running on the Grid. He will even cover the anti-patterns of applications running on the Apache Hadoop clusters. Arun will enumerate characteristics of well-behaved applications and provide guidance on appropriate uses of various features and capabilities of the Hadoop framework. It is largely prescriptive in its nature; a useful way to look at the presention is to understand that applications that follow, in spirit, the best practices prescribed here are very likely to be efficient, well-behaved in the multi-tenant environment of the Apache Hadoop clusters and unlikely to fall afoul of most policies and limits.
This presentation discusses the follow topics
What is Hadoop?
Need for Hadoop
History of Hadoop
Hadoop Overview
Advantages and Disadvantages of Hadoop
Hadoop Distributed File System
Comparing: RDBMS vs. Hadoop
Advantages and Disadvantages of HDFS
Hadoop frameworks
Modules of Hadoop frameworks
Features of 'Hadoop‘
Hadoop Analytics Tools
John Sing's Edge 2013 presentation, detailing when/where/how external storage products and/or system software (i.e. GPFS) can be effectively used in a Hadoop storage environment. Many Hadoop situations absolutely required direct attached storage. However, there are many intelligent situations where shared external storage may make sense in a Hadoop environment. This presentation details how/why/where, and promotes taking an intelligent, Hadoop-aware approach to deciding between internal storage and external shared storage. Having full awareness of Hadoop considerations is essential to selecting either internal or external shared storage in Hadoop environment.
Hadoop World 2011: Hadoop and RDBMS with Sqoop and Other Tools - Guy Harrison...Cloudera, Inc.
As Hadoop graduates from pilot project to a mission critical component of the enterprise IT infrastructure, integrating information held in Hadoop and in Enterprise RDBMS becomes imperative. We’ll look at key scenarios driving Hadoop and RDBMS integration and review technical options. In particular, we’ll deep dive into the Apache SQOOP project, which expedites data movement between Hadoop and any JDBC database, as well as providing an framework which allows developers and vendors to create connectors optimized for specific targets such as Oracle, Netezza etc.
Daniel Abadi Keynote at EDBT 2013
This talk discusses: (1) Motivation for HadoopDB (2) Overview of HadoopDB (3) Lessons learned from commercializing HadoopDB into Hadapt (4) Ideas for overcoming the loading challenge (Invisible Loading)
Talk on Apache Kudu, presented by Asim Jalis at SF Data Engineering Meetup on 2/23/2016.
http://www.meetup.com/SF-Data-Engineering/events/228293610/
Big Data applications need to ingest streaming data and analyze it. HBase is great at ingesting streaming data but not good at analytics. HDFS is great at analytics but not at ingesting streaming data. Frequently applications ingest data into HBase and then move it to HDFS for analytics. What if you could use a single system for both use cases?
What if you could use a single system for both use cases? This could dramatically simplify your data pipeline architecture.
This is where Kudu comes in. Kudu is a storage system that lives between HDFS and HBase. It is good at both ingesting streaming data and good at analyzing it using Spark, MapReduce, and SQL.
Quant trading theory series: electronic marketsOliver Laslett
The Soton Quants 3-part Trading Series begins with electronic markets.
Learn the effects of market microstructure on high-frequency trading and large trades.
Hadoop Interview Questions and Answers by rohit kapakapa rohit
Hadoop Interview Questions and Answers - More than 130 real time questions and answers covering hadoop hdfs,mapreduce and administrative concepts by rohit kapa
Design, Scale and Performance of MapR's Distribution for Hadoopmcsrivas
Details the first ever Exabyte-scale system that can hold a Trillion large files. Describes MapR's Distributed NameNode (tm) architecture, and how it scales very easily and seamlessly. Shows map-reduce performance across a variety of benchmarks like dfsio, pig-mix, nnbench, terasort and YCSB.
•Arun Murthy, from the Hadoop team at Yahoo! will introduce compendium of best practices for applications running on Apache Hadoop. In fact, we introduce the notion of a Grid Pattern which, similar to Design Pattern, represents a general reusable solution for applications running on the Grid. He will even cover the anti-patterns of applications running on the Apache Hadoop clusters. Arun will enumerate characteristics of well-behaved applications and provide guidance on appropriate uses of various features and capabilities of the Hadoop framework. It is largely prescriptive in its nature; a useful way to look at the presention is to understand that applications that follow, in spirit, the best practices prescribed here are very likely to be efficient, well-behaved in the multi-tenant environment of the Apache Hadoop clusters and unlikely to fall afoul of most policies and limits.
This presentation discusses the follow topics
What is Hadoop?
Need for Hadoop
History of Hadoop
Hadoop Overview
Advantages and Disadvantages of Hadoop
Hadoop Distributed File System
Comparing: RDBMS vs. Hadoop
Advantages and Disadvantages of HDFS
Hadoop frameworks
Modules of Hadoop frameworks
Features of 'Hadoop‘
Hadoop Analytics Tools
John Sing's Edge 2013 presentation, detailing when/where/how external storage products and/or system software (i.e. GPFS) can be effectively used in a Hadoop storage environment. Many Hadoop situations absolutely required direct attached storage. However, there are many intelligent situations where shared external storage may make sense in a Hadoop environment. This presentation details how/why/where, and promotes taking an intelligent, Hadoop-aware approach to deciding between internal storage and external shared storage. Having full awareness of Hadoop considerations is essential to selecting either internal or external shared storage in Hadoop environment.
Hadoop World 2011: Hadoop and RDBMS with Sqoop and Other Tools - Guy Harrison...Cloudera, Inc.
As Hadoop graduates from pilot project to a mission critical component of the enterprise IT infrastructure, integrating information held in Hadoop and in Enterprise RDBMS becomes imperative. We’ll look at key scenarios driving Hadoop and RDBMS integration and review technical options. In particular, we’ll deep dive into the Apache SQOOP project, which expedites data movement between Hadoop and any JDBC database, as well as providing an framework which allows developers and vendors to create connectors optimized for specific targets such as Oracle, Netezza etc.
Daniel Abadi Keynote at EDBT 2013
This talk discusses: (1) Motivation for HadoopDB (2) Overview of HadoopDB (3) Lessons learned from commercializing HadoopDB into Hadapt (4) Ideas for overcoming the loading challenge (Invisible Loading)
Talk on Apache Kudu, presented by Asim Jalis at SF Data Engineering Meetup on 2/23/2016.
http://www.meetup.com/SF-Data-Engineering/events/228293610/
Big Data applications need to ingest streaming data and analyze it. HBase is great at ingesting streaming data but not good at analytics. HDFS is great at analytics but not at ingesting streaming data. Frequently applications ingest data into HBase and then move it to HDFS for analytics. What if you could use a single system for both use cases?
What if you could use a single system for both use cases? This could dramatically simplify your data pipeline architecture.
This is where Kudu comes in. Kudu is a storage system that lives between HDFS and HBase. It is good at both ingesting streaming data and good at analyzing it using Spark, MapReduce, and SQL.
Quant trading theory series: electronic marketsOliver Laslett
The Soton Quants 3-part Trading Series begins with electronic markets.
Learn the effects of market microstructure on high-frequency trading and large trades.
Deze presentatie werd op 26 maart 2015 door Ed Sander gegeven tijdens een bijeenkomst van de China Business Association South-Netherlands.
Slidecasts inclusief de audio van de presentatie zijn te bekijken en beluisteren op http://www.chinatalk.nl/media/presentaties/
Not only does electronic trading continue to make our financial markets more competitive, but it has brought numerous benefits to all investors This presentation seeks to provide an overview of the evolution of electronic trading, provide clear definitions of often misused terms, and demystify electronic trading strategies like high frequency trading.
Among the topics discussed in this presentation:
The modernization of our financial markets using electronic trading
Definitions of electronic trading, algorithmic trading and high frequency trading
The Securities and Exchange Commission and high frequency trading
The Commodity Futures Trading Commission and high frequency trading
Regulatory framework in place to safeguard investors who invest in markets where electronic trading is prevalent
Do you feel confident you can deliver a smooth, trouble-free switchover to a cloud environment?
The complexity of the migration process is a big part of why enterprises are hesitant about cloud adoption, despite being sold on the benefits of cloud delivery.
Comparison of various streaming technologies
This meetup will take us through the various streaming technologies such as Storm, Flink, Infosphere Streams and Spark Streaming.
Agenda
• Characteristics of streaming technologies
• Introduction to Apache Storm, Trident and Flink
• Examples of Code and API
• Deep-dive of Spark Streaming
• Comparison of Spark Streaming with other streaming technologies
• Benchmark of Spark Streaming (with code walkthrough)
We will supplement theory concepts with sufficient examples
Five cool ways the JVM can run Apache Spark fasterTim Ellison
The IBM JVM runs Apache Spark fast! This talk explains some of the findings and optimizations from our experience of running Spark workloads.
The talk was originally presented at the SparkEU Summit 2015 in Amsterdam.
2019 StartIT - Boosting your performance with BlackfireMarko Mitranić
A workshop held in StartIT as part of Catena Media learning sessions.
We aim to dispel the notion that large PHP applications tend to be sluggish, resource-intensive and slow compared to what the likes of Python, Erlang or even Node can do. The issue is not with optimising PHP internals - it's the lack of proper introspection tools and getting them into our every day workflow that counts! In this workshop we will talk about our struggles with whipping PHP Applications into shape, as well as work together on some of the more interesting examples of CPU or IO drain.
Things You MUST Know Before Deploying OpenStack: Bruno Lago, Catalyst ITOpenStack
Audience: Advanced
About: Real world lessons and war stories about Catalyst IT’s experience in rolling out an OpenStack based public cloud in New Zealand.
This presentation will provide tips and advice that may save you a lot of time, money and nights of sleep if you are planning to run OpenStack in the future. It may also bring some insights to people that are already running OpenStack in production.
Topics covered will include: selection of hardware for optimal costs, techniques that drive quality and service levels up, common deployment mistakes, in place upgrades, how to identify the maturity level of each project and decide what is ready for production, and much more!
Speaker Bio: Bruno Lago – Entrepreneur, Catalyst IT Limited
Bruno Lago is a solutions architect that has been involved with the Catalyst Cloud (New Zealand’s first public cloud based on OpenStack) from its inception. He is passionate about open source software, cloud computing and disruptive technologies.
OpenStack Australia Day - Sydney 2016
https://events.aptira.com/openstack-australia-day-sydney-2016/
What are some of the performance implications of using lambdas and what strategies can be used to address these. When might be want an alternative to using a lambda and how can we design our APIs to be flexible in this regard. What are the principles of writing low latency code in Java? How do we tune and optimize our code for low latency? When don’t we optimize our code? Where does the JVM help and where does it get in our way? How does this apply to lambdas? How can we design our APIs to use lambdas and minimize garbage?
Java is one of the most popular languages and it's very important to understand the performance of Java servers. Modern JVMs compile the Java code in runtime using Just-In-Time (JIT) compiler and such JIT compiled code runs very close to optimized native code in terms of speed.
When understanding performance, it's important to know how Java works and we can also measure the performance using key metrics like Throughput and Latency. After measuring the performance, we can use profilers to understand the application behavior and find performance bottlenecks.
In this session, we will look at how Java manages the memory and how it optimizes the Java code using JIT compilation. We will also look at how we can use the Java Flight Recorder (JFR) to profile the JVM and find performance bottlenecks.
Finally, we can look at how "Flame Graphs" can be used to identify the most frequent code-paths quickly and accurately.
Azure + DataStax Enterprise (DSE) Powers Office365 Per User StoreDataStax Academy
We will present our Office 365 use case scenarios, why we chose Cassandra + Spark, and walk through the architecture we chose for running DSE on Azure.
The presentation will feature demos on how you too can build similar applications.
MySQL Scalability and Reliability for Replicated EnvironmentJean-François Gagné
You have a working application that is using MySQL: great! At the beginning, you are probably using a single database instance, and maybe – but not necessarily – you have replication for backups, but you are not reading from slaves yet. Scalability and reliability were not the main focus in the past, but they are starting to be a concern. Soon, you will have many databases and you will have to deal with replication lag. This talk will present how to tackle the transition.
We mostly cover standard/asynchronous replication, but we will also touch on Galera and Group Replication. We present how to adapt the application to become replication-friendly, which facilitate reading from and failing over to slaves. We also present solutions for managing read views at scale and enabling read-your-own-writes on slaves. We also touch on vertical and horizontal sharding for when deploying bigger servers is not possible anymore.
Are UNIQUE and FOREIGN KEYs still possible at scale, what are the downsides of AUTO_INCREMENTs, how to avoid overloading replication, what are the limits of archiving, … Come to this talk to get answers and to leave with tools for tackling the challenges of the future.
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This 7-second Brain Wave Ritual Attracts Money To You.!nirahealhty
Discover the power of a simple 7-second brain wave ritual that can attract wealth and abundance into your life. By tapping into specific brain frequencies, this technique helps you manifest financial success effortlessly. Ready to transform your financial future? Try this powerful ritual and start attracting money today!
1.Wireless Communication System_Wireless communication is a broad term that i...JeyaPerumal1
Wireless communication involves the transmission of information over a distance without the help of wires, cables or any other forms of electrical conductors.
Wireless communication is a broad term that incorporates all procedures and forms of connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices.
Features of Wireless Communication
The evolution of wireless technology has brought many advancements with its effective features.
The transmitted distance can be anywhere between a few meters (for example, a television's remote control) and thousands of kilometers (for example, radio communication).
Wireless communication can be used for cellular telephony, wireless access to the internet, wireless home networking, and so on.
Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdfFlorence Consulting
Quattordicesimo Meetup di Milano, tenutosi a Milano il 23 Maggio 2024 dalle ore 17:00 alle ore 18:30 in presenza e da remoto.
Abbiamo parlato di come Axpo Italia S.p.A. ha ridotto il technical debt migrando le proprie APIs da Mule 3.9 a Mule 4.4 passando anche da on-premises a CloudHub 1.0.
Italy Agriculture Equipment Market Outlook to 2027harveenkaur52
Agriculture and Animal Care
Ken Research has an expertise in Agriculture and Animal Care sector and offer vast collection of information related to all major aspects such as Agriculture equipment, Crop Protection, Seed, Agriculture Chemical, Fertilizers, Protected Cultivators, Palm Oil, Hybrid Seed, Animal Feed additives and many more.
Our continuous study and findings in agriculture sector provide better insights to companies dealing with related product and services, government and agriculture associations, researchers and students to well understand the present and expected scenario.
Our Animal care category provides solutions on Animal Healthcare and related products and services, including, animal feed additives, vaccination
guildmasters guide to ravnica Dungeons & Dragons 5...
Jstorm introduction-0.9.6
1. Company
LOGO
An Introduction of JStorm
LongdaFeng(zhongyan.feng@alibaba-inc.com)
2. Longda Feng
Alibaba
Agenda
Background
Basic Concept & Scenarios
Why start JStorm?
JStorm vs Storm
Question and Answer.
3. Who are we?
JStorm Team was among one of the
earliest that uses Storm in China.
Storm 0.5.1/0.5.4/0.6.0/0.6.2/0.7.0/0.7.1
JStorm 0.7.1/0.9.0/0.9.1/0.9.2/0.9.3/…
Our Duties
Application Development
JStorm System Development
JStorm System Operation
Longda Feng
Alibaba
4. Who are Using JStorm
Many small Chinese companies are using
JStorm
Longda Feng
Alibaba
5. How Big?
More than 3000 servers
More than 3 trillion messages per day
Longda Feng
Alibaba
6. What is JStorm?
JStorm is a distributed programming
framework
Similar to Hadoop MapReduce but designed
for real-time/in-memory scenarios
Users can build powerful distributed
applications from very simple APIs
Longda Feng
Alibaba
7. What is JStorm?
Redesigned Storm in Java.
Proved stable running in huge clusters.
Much faster
Much more powerful
Longda Feng
Alibaba
9. Advantage 1
Easy learning:
Simple Building Blocks: Topology/Spout/Bolt
APIs
Out of Box RPC/Fault-tolerance/Real-time
Data Grouping & Combining
Longda Feng
Alibaba
10. Advantage 2
Excellent Scalability
Horizontally Scalable
DAG-based
Adjustable parallelism of each component
Longda Feng
Alibaba
11. Stable
Guarantees Fault-Tolerance
No Single Point of Failure
• Nimbus HA
• Any Supervisor can be shutdown
New worker will be spawned and replace the
failed one automatically
Longda Feng
Alibaba
12. Accuracy
Acking framework guarantees no lost of
data
Transaction framework guarantees data
accuracy.
Longda Feng
Alibaba
13. Scenarios
Stateless Computation
All data come from Tuple
Use Cases:
Log Analysis
Pipe-lined System
Message converter
Statistical Analysis
Real-time Recommendation Algorithm
Longda Feng
Alibaba
14. Longda Feng
Alibaba
Why start JStorm
Storm community is not as active as we’ve
expected
Tailored for enterprise environment
Fixed critical bugs in Storm
Provided professional technical support,
improved app development pace.
Reduced operational cost.
16. JStorm is a superset of Storm
The program run in Storm can run in
JStorm without changing code
Longda Feng
Alibaba
17. More stable (1) -- nimbus HA
Nimbus HA
Dual-Nimbus HA
Longda Feng
Alibaba
18. More stable (2) -- RPC
Netty supports 2 RPC modes
Async
Sync
• Sending speed keeps up with the receiving speed,
therefore the data flow is more stable.
Longda Feng
Alibaba
19. More stable(3) – resource isolation
Malicious Worker won’t mess up with
others
Supported CPU Isolation with cgroups
Supported Memory Isolation
Resources quota can be enforced on each
group (before 0.9.5)
Longda Feng
Alibaba
20. More stable(4) -- Monitor
Monitor every component in your
Topology
Many more metrics(70+) than storm
Supported user-defined metrics
Supported user-defined alerts
Longda Feng
Alibaba
21. More stable (5) – CPU usage
Better utilizing CPU resource
Improved disruptor implementation
• Drop CPU usage from 300% to 10% when
processing queue is full
Avoid CPU spin-waiting
• Relocating nextTuple/ack/fail work to a different
thread
Longda Feng
Alibaba
22. More stable(6) -- more catch
Add try-catch in any place.
Nimbus/supervisor main thread
Spout/bolt initialization/cleanup
All IO operation, serialization/deserialization
All ZK operation
Longda Feng
Alibaba
23. More stable(7) -- ZK
Reduced unnecessary ZK usage:
Removed useless watcher
Increased ZK heartbeat frequency
Detect failed worker without a full scan of the
entire ZK directory
Longda Feng
Alibaba
24. More stable(8) -- other
Improved GC Tuning.
Guaranteed that all workers killed after kill
command is issued
Guaranteed single supervisor/nimbus per
instance
Avoid excessive use of local ports by
Netty client
。。。
Longda Feng
Alibaba
25. More powerful scheduler
Balancing Tasks with regard of :
CPU
Memory
Net
Longda Feng
Alibaba
26. CPU assignment
By default assign each worker a single
CPU slot
Application can be configured to utilize
more slots
Why:
Some task creates extra threads to do other
things in Alimama, one CPU slot doesn’t meet
requirement
Longda Feng
Alibaba
27. Memory Usage
Default worker memory is 2G
Application can be configured to utilize
more memory slots
Why:
In Alipay Mdrill application, Solr bolt will apply
much more memory
Longda Feng
Alibaba
28. Smarter Balancing
With JStorm Scheduler:
Tasks that exchange data heavily tend to be
assigned to the same worker to avoid
networking cost.
Longda Feng
Alibaba
29. User Defined Scheduler
User define task run one designated
worker
User can setting how many CPU slot /memory
slot will be used
Why:
In Taobao TAE project, some bolts want to
run in user defined-nodes
Longda Feng
Alibaba
30. Task on Different Node
Task of one component can be scheduled
to run on different nodes
Why:
In ALIPAY Mdrill, Solr bolt must run different
node
Longda Feng
Alibaba
31. Task on Single Node
All tasks can be scheduled to run on a
single node.
Why:
In Taobao TLog, there are many small jobs, in
order to reduce network cost, all task of one
job must run on single node.
Longda Feng
Alibaba
32. Old Assignment
“Last Assignment Policy”
By default , a task will run on the machine it
runs previous time
Why:
In Alibaba CDO, When restart one application,
user wanted to reuse old workers
Longda Feng
Alibaba
33. Pluginable
Be able to run on:
Hadoop yarn(more stable than storm)
Alibaba Apsara Clould System
Alibaba Elastic Resource Pool
Longda Feng
Alibaba
35. More convenient UI
More useful stats collected and displayed.
Browse Worker Log in UI
Longda Feng
Alibaba
36. Support libjar
Don’t need assembly all dependency jars
into one jar
Submit libjar with libjar parameter
Support worker.classpath
Longda Feng
Alibaba