Be aware of any free service No any notification after the trial ends, and experian just automatically...

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Be aware of any free service
No any notification after the trial ends, and experian just automatically upgrades the account from trial to membership. - no any email

No any notification when experian charges me every month: no any bill, it just charges silently.

Welcome any lawyer do something about this kind of shit business behaviors. 
+Experian 

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Kata07: How'd I Do? read/review code with different expectations (good coder, bad coder, and bug hunt...

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Kata07: How'd I Do?
read/review code with different expectations (good coder, bad coder, and bug hunt)
http://ift.tt/1GEBawb

The last couple of kata have been programming challenges; let’s move back into mushier, people-oriented stuff this week. This kata is about reading …

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Learning Big Data Hive(SQL), Pig(Script) Data Ingestion: Sqoop: transfer data between hadoop and db ...

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Learning Big Data
Hive(SQL), Pig(Script)
Data Ingestion:
Sqoop: transfer data between hadoop and db
--REST API
Flume: Event-based data collection and processing
http://ift.tt/142ovvQ
Agent, source, sink, channel
transport data into Hadoop or HBase

Oozie: work flow engine
Point-to-point workflow
Fan-out workflow: fork
Capture-and-decide Workflow: decision, switch
Frequency scheduling
dataset

Impala: Heavy use of Memory, low-latency query

Sqoop: efficiently transfer bulk data between Hadoop and db
http://ift.tt/1J48Tze

Kafka
HBase
Streaming: Samza, Storm and Spark(time window)
Samza(milliseconds),near real-time processing 

Trident
exactly once, 
micro-batching: streams are handled as batches of tuples

File Formats:

Extract, Load, Transform
Extract data from sources such as ERP or CRM applications
Transform that data into a common format that fits other data
in the warehouse
Load the data into the data warehouse for analysis

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Reactive Architecture/Programming Responsive respond in a timely manner if at all possible. detected...

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Reactive Architecture/Programming

Responsive
respond in a timely manner if at all possible. detected problem quickly and dealt with effectively

Resilience is achieved by replication, containment, isolation and delegation

Elastic: The system stays responsive under varying workload. 
This implies designs that have no contention points or central bottlenecks, resulting in the ability to shard or replicate components and distribute inputs among them.
performance monitoring

Message Driven: Reactive Systems rely on asynchronous message-passing to establish a boundary between components that ensures loose coupling, isolation, location transparency, and provides the means to delegate errors as message

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RxJava
Async By Default, Callback
onSuccess.onFailure
https://www.youtube.com/watch?v=_t06LRX0DV0
Observable + Time
Timeout in distributed system
Retry

The Reactive Manifesto. Published on September 16 2014. (v2.0). Organisations working in disparate domains are independently discovering patterns for building software that look the same. These systems are more robust, more resilient, more flexible and better positioned to meet modern demands.

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Learning Zookeeper && Curator(TBD) Recipes Distributed Queue Distributed Lock Leader election Group ...

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Learning Zookeeper && Curator(TBD)
Recipes
Distributed Queue
Distributed Lock
Leader election
Group membership
Service discovery
Status Monitoring(watch)
Distributed Barrier
Two-phase commit

1,3,5,7 nodes
Read/write speed
-- Elastic, Scale
https://www.youtube.com/watch?v=mMG-wagNBwY
https://www.youtube.com/watch?v=rXI9xiesUV8

ZooKeeper, Curator and How Microservices Load Balancing Works
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Airbnb Tech Talk: Patrick Hunt - Apache ZooKeeper and the Fallacies of Distributed Computing

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Apache Avro:Data Serialization Framework Schema evolution schemas defined in JSON Rename field: "aliases...

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Apache Avro:Data Serialization Framework
Schema evolution
schemas defined in JSON

Rename field: "aliases": ["age"]
Added a new ‘gender’ field, and defined a default value for it.
Removed fields.

Untagged Data
encode data in binary or json.

Dynamic typing
Static typing, code generation
The key abstraction is GenericData.Record.

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http://ift.tt/O7hFUq
http://ift.tt/1HFoeEY
http://ift.tt/1IUld6P
https://www.youtube.com/watch?v=_rgRfPrs6pU
TODO: AVRO+jax-rs

Three Reasons Why Apache Avro Data Serialization is a Good Choice for OpenRTB

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